58 results on '"Cinausero, M."'
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2. Study of the 4He(4He,4He)4He* inelastic scattering at the MAGNEX facility
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Soukeras V., Cappuzzello F., Cavallaro M., Carbone D., Hacisalihoglu A., Fisichella M., Agodi C., Becker H.-W., Brischetto G. A., Calabrese S., Ciampi C., Cicerchia M., Cinausero M., Ciraldo I., D΄ Andrea M., Dell΄ Aquila D., Firat S., Frosin C., Hilcker M., La Fauci L., Lombardo I., Marchi T., Sgouros O., Spatafora A., Torresi D., Vigilante M., and Yildirim A.
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Physics ,QC1-999 - Abstract
The 4He(4He,4He)4He* inelastic scattering was revisited in a new coincidence measurement at the MAGNEX facility of Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali del Sud. The 4He + 4He → 4He + 4He* → 4He + 3H + 1H and 4He + 4He → 4He + 4He* → 4He + 3He + n reactions were measured simultaneously by detecting the 4He particles at the MAGNEX magnetic spectrometer in coincidence with the 3H and 3He at the OSCAR silicon telescope. The main concept of the experiment is described and the data reduction strategy is reported.
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- 2021
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3. Is nuclear viscosity dependent on temperature?
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Vardaci E., Di Nitto A., Nadtochy P.N., La Rana G., Cinausero M., Prete G., Gelli N., Kozulin E.M., Knyazheva G.N., Itkis I.M., Ashaduzzaman M., Davide F., Pulcini A., Quero D., and Rath P.K.
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Physics ,QC1-999 - Abstract
Nuclear viscosity is an indispensable ingredient of the nuclear fission collective dynamical models. It governs the exchange of energy between the collective variables and the thermal bath. Its dependence on the shape and temperature is a matter of controversy. By using systems of intermediate fissility we have demonstrated in a recent study that the viscosity parameters is larger for compact shapes, and decreases for larger deformations of the fissioning system, at variance with the conclusions of the statistical model modified to include empirically viscosity and time scales. In this contribution we propose an experimental scenario to highlight the possible dependence of the viscosity from the temperature.
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- 2018
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4. Pre-equilibrium emission to study clustering in nuclei
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Fabris D., Gramegna F., Cicerchia M., Marchi T., Barlini S., Piantelli S., Bini M., Bruno M., Casini G., Cinausero M., D’Agostino M., Degerlier M., Gelli N., Mantovani G., Morelli L., Mabiala J., Olmi A., Pasquali G., Poggi G., Valdré S., Vardaci E., Fotina O.V., Kravchuk V.L., Colonna M., and Ono A.
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Physics ,QC1-999 - Abstract
Clustering structural properties in medium-mass systems have been investigated studying the competition between the evaporation and pre-equilibrium particle emission in central collisions. At variance with light nuclei, in the case of heavier nuclei there are no experimental evidences of such structure effects, since the determination of pre-formed clusters within nuclear matter is less obvious. The two systems 16O + 65Cu and 19F + 62Ni, leading to the same compound system 81Rb*, have been studied at the same beam velocity (16 AMeV). The experiments have been performed using the GARFIELD + RCo multi-detection system at the Legnaro National Laboratories. Recent results of the data analysis and of the comparison of the experimental data with different statistical and dynamical model calculations are reported in this contribution.
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- 2017
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5. Isospin transport phenomena for the systems Kr-80+Ca-40,Ca-48 at 35 MeV/nucleon
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Piantelli, S, Casini, G, Ono, A, Poggi, G, Pastore, G, Barlini, S, Bini, M, Boiano, A, Bonnet, E, Borderie, B, Bougault, R, Bruno, M, Buccola, A, Camaiani, A, Chbihi, A, Ciampi, C, Cicerchia, M, Cinausero, M, Degerlier, M, Duenas, JA, Fable, Q, Fabris, D, Frankland, JD, Frosin, C, Gramegna, F, Gruyer, D, Kordyasz, A, Kozik, T, Lemari, J, Le Neindre, N, Lombardo, I, Lopez, O, Mantovani, G, Marchi, T, Henri, M, Morelli, L, Olmi, A, Ottanelli, P, Parlog, M, Pasquali, G, Quicray, J, Stefanini, AA, Tortone, G, Upadhyaya, S, Valdre, S, Verde, G, Vient, E, and Vigilante, M
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COLLISIONS ,Science & Technology ,Physics, Nuclear ,COMPLEX FRAGMENT EMISSION ,MOLECULAR-DYNAMICS ,DEPENDENCE ,Physics ,Physical Sciences ,SYMMETRY ENERGY - Abstract
ispartof: PHYSICAL REVIEW C vol:103 issue:1 status: published
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- 2021
6. Clustering effects in fusion evaporation reactions with light even-even N=Z nuclei. The 24Mg and 28Si cases
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Morelli L., Bruno M., D’Agostino M., Baiocco G., Gulminelli F., Cinausero M., Degerlier M., Fabris D., Gramegna F., Marchi T., Barlini S., Bini M., Casini G., Gelli N., Pasquali G., Piantelli S., and Valdrè S.
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Physics ,QC1-999 - Abstract
In the recent years, cluster structures have been evidenced in many ground and excited states of light nuclei [1, 2]. The decay of highly excited states of 24Mg is studied in fusion evaporation events completely detected in charge in the reactions 12C+12C and 14N+10B at 95 and 80 MeV incident energy, respectively, and compared to the results of a pure statistical model [3, 4]. Inclusive variables are in general well reproduced by the model. We found clear deviations from the statistical model if we select emission channels involving multiple α particles which are more probable than expected from a purely statistical behavior. Data from 12C+12C reaction have been analyzed in order to study the decay of the Hoyle state of 12C* with two different selections: peripheral binary collisions and 6α decay channel in central events. To continue the investigation on light systems, we have recently measured the 16O+12C reaction at three different beam energies, namely Ebeam = 90, 110 and 130 MeV. Preliminary results are presented.
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- 2016
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7. FAZIA applications
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Piantelli S., Casini G., Maurenzig P.R., Olmi A., Barlini S., Bini M., Pasquali G., Pastore G., Poggi G., Stefanini A.A., Valdrè S., Ademard G., Auger L., Bougault R., Bonnet E., Borderie B., Chbihi A., Frankland J.D., Gruyer D., Lopez O., LeNeindre N., Parlog M., Rivet M.F., Vient E., Rosato E., Spadaccini G., Vigilante M., Bruno M., Marchi T., Morelli L., Cinausero M., Degerlier M., Gramegna F., Kordyasz A., Kozik T., Twarog T., Alba R., Maiolino C., Santonocito D., and Galichet E.
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Physics ,QC1-999 - Abstract
The present status and the perspectives of the FAZIA project are presented. The main achievements in terms of identification thresholds and isotopic resolution are discussed, together with the adopted technical solutions. The detector is particularly well suited for the investigation of isospin transport phenomena at intermediate beam energies; perspectives to reduce the identification thresholds to cope with lower energy ISOL beams are briefly introduced. Some experimental results concerning isospin transport effects obtained with a test telescope are presented. The study of isospin transport phenomena can give information on the symmetry energy term of the nuclear equation of state by comparing the experimental results on isospin related observables with the predictions of transport codes.
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- 2016
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8. Extracting information from partially depleted Si detectors with digital sampling electronics
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Pastore G., Pasquali G., Le Neindre N., Ademard G., Barlini S., Bini M., Bonnet E., Borderie B., Bougault R., Casini G., Chbihi A., Cinausero M., Dueñas J.A., Edelbruck P., Frankland J.D., Gramegna F., Gruyer D., Kordyasz A., Kozik T., Lopez O., Marchi T., Morelli L., Olmi A., Ordine A., Pârlog M., Piantelli S., Poggi G., Rivet M.-F., Rosato E., Salomon F., Spadaccini G., Stefanini A.A., Valdré S., Vient E., Twaróg T., Alba R., Maiolino C., and Santonocito D.
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Physics ,QC1-999 - Abstract
A study of the identification properties and of the energy response of a Si-Si-CsI(Tl) ΔE-E telescope exploiting a partially depleted second Si stage has been performed. Five different bias voltages have been applied to the second stage of the telescope, one corresponding to full depletion, the others associated with a depleted layer ranging from 60% to 90% of the detector thickness. Fragment identification has been obtained using either the ΔE-E technique or the Pulse Shape Analysis (PSA). Charge collection efficiency has been evaluated. The ΔE-E performance is not affected by incomplete depletion. Isotopic separation capability improves at lower bias voltages with respect to full depletion, though charge identification thresholds increase.
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- 2015
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9. Clustering in alpha conjugate nuclei
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Schmidt K., Kim E. J., Wuenschel S., Barbui M., Natowitz J. B., Hagel K., Wada R., Bottosso C., Giuliani G., Qin L., Kohley Z., Bonasera A., Chen Z., Huang M., Wang J., Zheng H., Kowalski S., Rodrigues M. R. D., Fabris D., Moretto S., Pesente S., Viesti G., Cinausero M., Prete G., Nebbia G., Keutgen T., El Masri Y., Majka Z., and Ma Y. G.
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Physics ,QC1-999 - Abstract
Characteristics of the decay of alpha like nuclei produced in various reactions with alpha conjugate nuclei are discussed. We observe a significant number of events in which a large fraction of the system breaks up into alpha-conjugate nuclei. Lighter fragments in the various decay channels appear to originate from a neck-like region between 4 and 7 cm/ns whereas the heavier fragments appear to originate from velocities near the beam velocity. This behavior is consistent with a hierarchy effect that cannot be explained by statistical processes.
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- 2015
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10. Pre-equilibrium emission and its possible relation to α-clustering in nuclei
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Marchi T., Gramegna F., Fabris D., Degerlier M., Fotina O.V., Kravchuk V.L., D’Agostino M., Morelli L., Appannababu S., Baiocco G., Barlini S., Bini M., Brondi A., Bruno M., Casini G., Cinausero M., Gelli N., Moro R., Olmi A., Pasquali G., Piantelli S., Poggi G., Valdré S., and Vardaci E.
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Physics ,QC1-999 - Abstract
The study of nuclear states built on clusters bound by valence neutrons in their molecular configurations is a field of large interest. Clustering becomes particularly important at the dripline, where weakly bound systems prevail. For light nuclei, at an excitation energy close to the particle separation value, there are experimental evidences of such structure effects, but this is still not the case for heavier nuclear systems. Several theoretical efforts have been done in the development of pre-formation alpha-clustering models, but there is still a lack of experimental data capable to give a direct feedback. The search of alpha-cluster evidences in medium-mass systems is therefore a new challenge which can give new hints in this field of research.
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- 2015
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11. Cluster correlation effects in 12C+12C and 14N+10B fusion-evaporation reactions
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Morelli L., Baiocco G., D’Agostino M., Gulminelli F., Bruno M., Cinausero M., Degerlier M., Fabris D., Gramegna F., Marchi T., Barlini S., Bini M., Casini G., Gelli N., Olmi A., Pasquali G., Piantelli S., and Valdré S.
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Physics ,QC1-999 - Abstract
The decay of highly excited states of 24Mg is studied in fusion evaporation events completely detected in charge in the reactions 12C+12C and 14N+10B at 95 and 80 MeV incident energy respectively. The comparison of light charged particles measured spectra with statistical model predictions suggests that the dominant reaction mechanism is compound nucleus (CN) formation and decay. However, in both reactions, a discrepancy with statistical expectations is found for α particles detected in coincidence with Carbon, Oxigen and Neon residues. The comparison between the two reactions shows that this discrepancy is only partly explained by an entrance channel effect. Evidence for cluster correlations in excited 24Mg CN is suggested by the comparison between the measured and calculated branching ratios for the channels involving α particles.
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- 2015
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12. Isospin transport phenomena and odd-even staggering in 84Kr+112,124Sn collisions at 35 AMeV
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Piantelli S., Casini G., Maurenzig P.R., Olmi A., Barlini S., Bini M., Carboni S., Pasquali G., Poggi G., Stefanini A.A., Valdré S., Bougault R., Bonnet E., Borderie B., Chbihi A., Frankland J.D., Gruyer D., Lopez O., Le Neindre N., Parlog M., Rivet M.-F., Vient E., Rosato E., Spadaccini G., Vigilante M., Bruno M., Marchi T., Morelli L., Cinausero M., Degerlier M., Gramegna F., Kozik T., Twarog T., Alba R., Maiolino C., and Santonocito D.
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Physics ,QC1-999 - Abstract
Experimental results concerning isospin transport phenomena and odd-even staggering in Z and N distributions are presented. Data refer to 84Kr+112,124Sn collisions at 35AMeV and they were collected with a high resolution FAZIA telescope, able to isotopically resolve ions up to Z ∼ 20. Evidences of isospin diffusion and drift obtained from the < N > /Z behaviour of the detected fragments are discussed. The odd-even staggering both in Z and N is compared with experimental data available in literature, finding that it shows a common trend in different reaction types.
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- 2015
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13. Pre-equilibrium α-particle emission as a probe to study α-clustering in nuclei
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Fotina O.V., Goncharov S.A., Eremenko D.O., Platonov S.Yu., Yuminov O.A., Kravchuk V.L., Gramegna F., Marchi T., Cinausero M., D'Agostino M., Bruno M., Baiocco G., Morelli L., Degerlier M., Casini G., Barlini S., Valdrè S., Piantelli S., Pasquali G., Bracco A., Camera F., Wieland O., Benzoni G., Blasi N., Giaz A., Corsi A., and Fabris D.
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Physics ,QC1-999 - Abstract
A theoretical approach was developed to describe secondary particle emission in heavy ion collisions, with special regards to pre-equilibrium α-particle production. The probabilities of neutron, proton and α-particle emission have been evaluated for both the equilibrium and pre-equilibrium stages of the process. Effects due the possible cluster structure of the projectile which has been excited during the collisions have been experimentally evidenced studying the double differential cross sections of p and α-particles emitted in the E=250MeV 16O +116Sn reaction. Calculations within the present model with different clusterization probabilities have been compared to the experimental data.
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- 2014
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14. Measurement of the 25Mg(α,n)28Si reaction cross section at LNL
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Depalo R., Caciolli A., Marchi T., Appannababu S., Blasi N., Broggini C., Camera F., Cinausero M., Collanzuol G., Fabris D., Gramegna F., Kravchuk V. L., Leone M., Lombardi A., Mastinu P., Menegazzo R., Montagnoli G., Prete G., Rigato V., Rossi Alvarez C., and Wieland O.
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Physics ,QC1-999 - Abstract
The detection of the 1809 keV emission line associated with the decay of 26Al in the interstellar medium provides a direct evidence of recent nucleosynthesis events in our galaxy. 26Al is thought to be mainly produced in massive stars, but in order to have a quantita- tive understanding of the 26Al distribution, the cross section of all the nuclear reactions involved in its production should be accurately known. A recent sensitivity study demonstrated that the 25Mg(α,n)28Si is the reaction with the strongest impact on the synthesis of 26Al during explosive Neon and Carbon burning [4]. In order to improve the experimental knowledge of the 25Mg(α,n)28Si cross section, a new direct measurement has been performed at Legnaro National Laboratories. The experimental setup, the data analysis and preliminary results are discussed.
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- 2014
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15. The european FAZIA initiative: a high-performance digital telescope array for heavy-ion studies
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Casini G., Barlini S., Pasquali G., Pastore G., Bini M., Carboni S., Olmi A., Piantelli S., Poggi G., Stefanini A., Valdré S., Bonnet E., Borderie B., Bougault R., Bruno M., Chbihi A., Cinausero M., Degerlier M., Edelbruck P., Frankland J.D., Gramegna F., Gruyer D., Guerzoni M., Kordjasz A., Kozik T., Le Neindre N., Lopez O., Marchi T., Marini P., Morelli L., Ordine A., Pârlog M., Rivet M.F., Rosato E., Salomon F., Spadaccini G., Twaróg T., Vient E., and Vigilante M.
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Physics ,QC1-999 - Abstract
The european Fazia collaboration aims at building a new modular array for charged product identification to be employed for heavy-ion studies. The elementary module of the array is a Silicon-Silicon-CsI telescope, optimized for ion identification including pulse shape analysis, too. The achievement of top performances imposes specific electronics which has been developed by the FAZIA collaboration and includes high quality charge and current preamplifiers, coupled to fully digital front-end. During the initial R&D phase, original and novel solutions have been tested in prototypes, obtaining unprecedented ion identification capabilities. FAZIA is now constructing a demonstrator array consisting of about two hundreds telescopes arranged in a compact and transportable configuration. In this contribution, we mainly summarize some aspects studied by FAZIA to improve the ion identification. Then we will briefly discuss the FAZIA program focused on experiments to be done with the demonstrator. First results on the isospin dynamics obtained with a reduced set-up demonstrate well the performance of the telescope and represent a good starting point towards future investigations with both stable and exotic beams.
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- 2014
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16. Probing the Statistical Decay and α-clustering effects in 12C + 12C and 14N + 10B reactions
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Morelli L., Baiocco G., D’Agostino M., Bruno M., Gulminelli F., Cinausero M., Degerlier M., Fabris D., Gramegna F., Marchi T., Barlini S., Bini M., Casini G., Gelli N., Lopez A., Pasquali G., Piantelli S., and Valdrè S.
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Physics ,QC1-999 - Abstract
An experimental campaign has been undertaken at Laboratori Nazionali di Legnaro (LNL INFN), Italy, in order to progress in our understanding of the statistical properties of light nuclei at excitation energies above particle emission threshold, by measuring exclusive data from fusion-evaporation reactions. On the experimental side, a first reaction: 12C+12C at 95 MeV beam energy has been measured, using the GARFIELD + Ring Counter (RCo) apparatuses. Fusion-evaporation events have been exclusively selected out of the entire data set. The comparison to a dedicated Hauser-Feshbach calculation allows us to give constraints on the nuclear level density at high excitation energy for light systems ranging from C up to Mg. Out-of-equilibrium aα emission has been evidenced and attributed both to an entrance channel effect (favoured by the cluster nature of reaction partners), and, in more dissipative events, to the persistence of cluster correlations well above the 24Mg threshold for 6 α’s decay. In order to study the same 24Mg compound nucleus at similar excitation energy with respect to this first reaction a new measurement, 14N + 10B at 5.7 A.MeV, was performed at LNL laboratories with the same experimental setup. The comparison between the two systems would allow us to further constrain the level density of light nuclei in the mass-excitation energy range of interest. In this perspective, deviations from a statistical behaviour can be used as a tool to get information on nuclear clustering, both in the ground-state for projectile and target and in the hot source formed in the collision.
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- 2014
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17. Isospin transport in 84Kr+112,124Sn reactions at Fermi energies
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Piantelli S., Casini G., Olmi A., Barlini S., Bini M., Carboni S., Maurenzig P.R., Pasquali G., Poggi G., Stefanini A.A., Bougault R., Le Neindre N., Lopez O., Parlog M., Vient E., Bonnet E., Chbihi A., Frankland J.D., Gruyer D., Rosato E., Spadaccini G., Vigilante M., Borderie B., Rivet M.F., Bruno M., Morelli L., Cinausero M., Degerlier M., Gramegna F., Marchi T., Alba R., Maiolino C., Santonocito D., Kozik T., and Twarog T.
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Physics ,QC1-999 - Abstract
Isospin transport phenomena in dissipative heavy ion collisions have been investigated at Fermi energies with a beam of 84Kr at 35AMeV. A comparison of the 〈N〉/Z of light and medium products forward-emitted in the centre of mass frame when the beam impinges on two different targets, the n-poor 112Sn and the n-rich 124Sn, is presented. Data were collected by means of a three-layer telescope with very good performances in terms of mass identification (full isotopic resolution up to Z ~ 20 for ions punching through the first detector layer) built by the FAZIA Collaboration and located just beyond the grazing angle for both reactions. The 〈N〉/Z of the products detected when the n-rich target is used is always higher than that associated to the n-poor one; since the detector was able to measure only fragments coming from the QuasiProjectile decay and/or neck emission, the observed behaviour can be ascribed to the isospin diffusion process, driven by the isospin gradient between QuasiProjectile and QuasiTarget. Moreover, for light fragments the 〈N〉/Z as a function of the lab velocity of the fragment is observed to increase when we move from the QuasiProjectile velocity to the centre of mass (neck zone). This effect can be interpreted as an evidence of isospin drift driven by the density gradient between the QuasiProjectile zone (at normal density) and the more diluted neck zone.
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- 2014
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18. Angular Distribution and Cross Section Measurement of the 6Li(3He,n)8B Reaction at 5.8 MeV
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Cinausero M., Kravchuk V.L., Marchi T., Gramegna F., Collazuol G., de Angelis G., Prete G., Wildner E., Palladino V., and Mezzetto M.
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Physics ,QC1-999 - Abstract
The reaction 6Li(3He,n)8B was studied at Laboratori Nazionali di Legnaro in the framework of the EUROnu Design Study for a Beta Beam facility at CERN. The 8B production cross section was determined through neutron angular distribution by using the time-of-flight technique. Thanks to the high statistics achieved, the neutron angular distribution for the population of the 8B first excited state has been measured for the first time. Discrepancies with other available data sets for 8B ground state population are discussed and interpreted in the framework of DWBA calculations. Further measurements at beam energies above 10 MeV are needed to clarify the behaviour of the angular distribution
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- 2014
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19. Measurement of light charged particles in the decay channels of medium-mass excited compound nuclei
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Valdré S., Barlini S., Casini G., Pasquali G., Piantelli S., Carboni S., Cinausero M., Gramegna F., Marchi T., Baiocco G., Bardelli L., Benzoni G., Bini M., Blasi N., Bracco A., Brambilla S., Bruno M., Camera F., Corsi A., Crespi F., D’Agostino M., Degerlier M., Kravchuk V. L., Leoni S., Million B., Montanari D., Morelli L., Nannini A., Nicolini R., Poggi G., Vannini G., Wieland O., Bednarczyk P., Ciemała M., Dudek J., Fornal B., Kmiecik M., Maj A., Matejska-Minda M., Mazurek K., Męczyński W. M, Myalski S., Styczeń J., and Ziębliński M.
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Physics ,QC1-999 - Abstract
The 48Ti on 40Ca reactions have been studied at 300 and 600 MeV focusing on the fusion-evaporation (FE) and fusion-fission (FF) exit channels. Energy spectra and multiplicities of the emitted light charged particles have been compared to Monte Carlo simulations based on the statistical model. Indeed, in this mass region (A ~ 100) models predict that shape transitions can occur at high spin values and relatively scarce data exist in the literature about coincidence measurements between evaporation residues and light charged particles. Signals of shape transitions can be found in the variations of the lineshape of high energy gamma rays emitted from the de-excitation of GDR states gated on different region of angular momenta. For this purpose it is important to keep under control the FE and FF processes, to regulate the statistical model parameters and to control the onset of possible pre-equilibrium emissions from 300 to 600 MeV bombarding energy.
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- 2014
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20. Fission dynamics: The quest of a temperature dependent nuclear viscosity
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Vardaci E., Nitto A. Di, Nadtochy P.N., Brondi A., Rana G. La, Moro R., Cinausero M., Prete G., Gelli N., Kozulin E.M., and Knyazheva G.N.
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Physics ,QC1-999 - Abstract
This contribution presents a journey within the open questions about the current use of a temperature dependent nuclear viscosity in models of nuclear fission and proposes an alternative experimental approach by using systems of intermediate fissility. This study is particularly relevant because: i) systems of intermediate fissility offer a suitable framework since the intervals between the compound nucleus and scission point temperatures with increasing excitation energy are much smaller than in the case of heavier systems, ii) the measurement of observables in the ER channel translates into a larger set of effective constraints for the models.
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- 2013
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21. Clustering effects in 48Cr composite nuclei produced via 24Mg + 24Mg reaction
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Cinausero M., Prete G., Gelli N., Vardaci E., Vanzanella A., Moro R., Nadtochy P., Brondi A., Rana G. La, and Nitto A. Di
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Physics ,QC1-999 - Abstract
In the framework of studying clustering effects in N=Z light nuclei, an experiment was carried out to get information on the properties of the 48Cr composite nuclei produced via the 24Mg +24Mg reaction. In particular, the study regards the 48Cr at 60 MeV of excitation energy where a resonance with a narrow width (170 KeV) has been found by measuring the elastic and anelastic channels. To determine the deformation of this state, evaporative Light Charged Particles (LCP) are measured and compared to the Statistical Model (SM) predictions, which are very sensitive to nuclear deformation. The experiment was performed at LNL using the 8ĒLP apparatus to select LCPs and a Parallel Plate Avalanche Counter (PPAC) system to detect the Evaporation Residues (ER). Preliminary results on the measurements of ER – LCP and LCP – LCP angular correlations are presented which indicate the presence of a very large deformation.The analysis will proceed with the extraction of the LCP energy spectra and with the angular correlations for high multiplicity channels to determine the deformation.
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- 2012
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22. Nuclear dissipation effects on fission and evaporation in systems of intermediate fissility
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Gelli N., Lucarelli F., Cinausero M., Prete G., Rizzi V., Vardaci E., Ordine A., Boiano A., Di Nitto A., La Rana G., Moro R., Nadotchy P.N., and Brondi A.
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Physics ,QC1-999 - Abstract
The systems of intermediate fissility 132Ce and 158Er have been studied experimentally and theoretically in order to investigate the dissipation properties of nuclear matter. Cross sections of fusion-fission and evaporation residues channels together with charged particles multiplicities in both channels, their spectra, angular correlations and mass-energy distribution of fission fragments have been measured. Theoretical analysis has been performed using multi-dimensional stochastic approach with realistic treatment of particle evaporation. The results of analysis show that full one-body or unusually strong two-body dissipation allows to reproduce experimental data. No temperature dependent dissipation was needed.
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- 2010
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23. Search for isospin effects on nuclear level density
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Lucarelli F., Prete G., Rizzi V., Gelli N., Ordine A., Boiano A., Cinausero M., Moro R., Nadotchy P.N., Vardaci E., Brondi A., Di Nitto A., and La Rana G.
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Physics ,QC1-999 - Abstract
Studies on the isospin dependence of the level density have been recently reported in the literature for nuclei with 20 ≤ A ≤ 110. Corrections to the level density have been deduced which would imply a significant reduction of this quantity for nuclei far from the valley of stability. Isospin effects on the level density are also expected through the symmetry energy contribution to the nuclear masses, which is predicted to increase with the temperature. According to these findings, we have implemented the statistical model in order to account for isospin effects on the level density parameter a and on the temperature-dependent symmetry energy. We present the results of calculations for the decay of a variety of neutron-rich composite systems. We found that isospin produces sizable eïňĂects on difierent observables, this result being promising for future experiments with the second generation RIB facilities SPES and SPIRAL2. We report the results of a first experiment aimed at searching for isospin effects in the decay of 139 Eu composite nuclei produced by a stable beam at E x =90 MeV.
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- 2010
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24. Fission dynamics with systems of intermediate fissility
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VARDACI, EMANUELE, Nitto, A. DI, Nadtochy, P. N, BRONDI, AUGUSTO, Rana, G. LA, MORO, RENATA EMILIA MARIA, Cinausero, M, Prete, G, Gelli, N, Kozulin, E. M, Knyazheva, G. N, Itkis, I. M., DI NITTO, antonio, Vardaci, Emanuele, Nitto, A. DI, Nadtochy, P. N, Brondi, Augusto, Rana, G. LA, Moro, RENATA EMILIA MARIA, Cinausero, M, Prete, G, Gelli, N, Kozulin, E. M, Knyazheva, G. N, Itkis, I. M., and DI NITTO, Antonio
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Physics ,Nuclear physics ,Fissility ,Cold fission ,Spectrometer ,Fission ,Dynamics (mechanics) ,Evaporation ,General Physics and Astronomy ,Dissipation ,Nuclear Experiment ,Charged particle - Abstract
A 4 pi light charged particle spectrometer, called 8 pi LP, is in operation at the Laboratori Nazionali di Legnaro, Italy, for studying reaction mechanisms in low-energy heavy-ion reactions. Besides about 300 telescopes to detect light charged particles, the spectrometer is also equipped with an anular PPAC system to detect evaporation residues and a two-arm time-of-flight spectrometer to detect fission fragments. The spectrometer has been used in several fission dynamics studies using as a probe light charged particles in the fission and evaporation residues (ER) channels. This paper proposes a journey within some open questions about the fission dynamics and a review of the main results concerning nuclear dissipation and fission time-scale obtained from several of these studies. In particular, the advantages of using systems of intermediate fissility will be discussed.
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- 2015
25. High intensity neutrino oscillation facilities in Europe
- Author
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Edgecock, T., Caretta, O., Davenne, T., Densam, C., Fitton, M., Kelliher, D., Loveridge, P., Machida, S., Prior, C., Rogers, C., Rooney, M., Thomason, J., Wilcox, D., Wildner, E., Efthymiopoulos, I., Garoby, R., Gilardoni, S., Hansen, C., Benedetto, E., Jensen, E., Kosmicki, A., Martini, M., Osborne, J., Prior, G., Stora, T., Melo Mendonca, T., Vlachoudis, V., Waaijer, C., Cupial, P., Chancé, A., Longhin, A., Payet, J., Zito, M., Baussan, E., Bobeth, C., Bouquerel, E., Dracos, M., Gaudiot, G., Lepers, B., Osswald, F., Poussot, P., Vassilopoulos, N., Wurtz, J., Zeter, V., Bielski, J., Kozien, M., Lacny, L., Skoczen, B., Szybinski, B., Ustrycka, A., Wroblewski, A., Marie-Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, Th., Delbar, Th., Debray, F., Trophine, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Burt, G., Dexter, A., Kravchuk, V., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Laveder, M., Mazzocco, M., Mezzetto, M., Signorini, C., Vardaci, E., Di Nitto, A., Brondi, A., La Rana, G., Migliozzi, P., Moro, R., Palladino, V., Gelli, N., Berkovits, D., Hass, M., Hirsh, T., Schaumann, M., Stahl, A., Wehner, J., Bross, A., Kopp, J., Neuffer, D., Wands, R., Bayes, R., Laing, A., Soler, P., Agarwalla, S., Cervera Villanueva, A., Donini, A., Ghosh, T., Gómez Cadenas, J., Hernández, P., Martín-Albo, J., Mena, O., Burguet-Castell, J., Agostino, L., Buizza-Avanzini, M., Marafini, M., Patzak, T., Tonazzo, A., Duchesneau, D., Mosca, L., Bogomilov, M., Karadzhov, Y., Matev, R., Tsenov, R., Akhmedov, E., Blennow, M., Lindner, M., Schwetz, T., Fernández Martinez, E., Maltoni, M., Menéndez, J., Giunti, C., González García, M., Salvado, J., Coloma, P., Huber, P., Li, T., López Pavón, J., Orme, C., Pascoli, S., Meloni, D., Tang, J., Winter, W., Ohlsson, T., Zhang, H., Scotto-Lavina, L., Terranova, F., Bonesini, M., Tortora, L., Alekou, A., Aslaninejad, M., Bontoiu, C., Kurup, A., Jenner, L., Long, K., Pasternak, J., Pozimski, J., Back, J., Harrison, P., Beard, K., Bogacz, A., Berg, J., Stratakis, D., Witte, H., Snopok, P., Bliss, N., Cordwell, M., Moss, A., Pattalwar, S., Apollonio, M., Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), APC - Neutrinos, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Souterrain de Modane (LSM - UMR 6417), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Edgecock, T, Caretta, O, Davenne, T, Densam, C, Fitton, M, Kelliher, D, Loveridge, P, Machida, S, Prior, C, Rogers, C, Rooney, M, Thomason, J, Wilcox, D, Wildner, E, Efthymiopoulos, I, Garoby, R, Gilardoni, S, Hansen, C, Benedetto, E, Jensen, E, Kosmicki, A, Martini, M, Osborne, J, Prior, G, Stora, T, Melo Mendonca, T, Vlachoudis, V, Waaijer, C, Cupial, P, Chancé, A, Longhin, A, Payet, J, Zito, M, Baussan, E, Bobeth, C, Bouquerel, E, Dracos, M, Gaudiot, G, Lepers, B, Osswald, F, Poussot, P, Vassilopoulos, N, Wurtz, J, Zeter, V, Bielski, J, Kozien, M, Lacny, L, Skoczen, B, Szybinski, B, Ustrycka, A, Wroblewski, A, Marie Jeanne, M, Balint, P, Fourel, C, Giraud, J, Jacob, J, Lamy, T, Latrasse, L, Sortais, P, Thuillier, T, Mitrofanov, S, Loiselet, M, Keutgen, T, Delbar, T, Debray, F, Trophine, C, Veys, S, Daversin, C, Zorin, V, Izotov, I, Skalyga, V, Burt, G, Dexter, A, Kravchuk, V, Marchi, T, Cinausero, M, Gramegna, F, De Angelis, G, Prete, G, Collazuol, G, Laveder, M, Mazzocco, M, Mezzetto, M, Signorini, C, Vardaci, E, Di Nitto, A, Brondi, A, La Rana, G, Migliozzi, P, Moro, R, Palladino, V, Gelli, N, Berkovits, D, Hass, M, Hirsh, T, Schaumann, M, Stahl, A, Wehner, J, Bross, A, Kopp, J, Neuffer, D, Wands, R, Bayes, R, Laing, A, Soler, P, Agarwalla, S, Cervera Villanueva, A, Donini, A, Ghosh, T, Gómez Cadenas, J, Hernández, P, Martín Albo, J, Mena, O, Burguet Castell, J, Agostino, L, Buizza Avanzini, M, Marafini, M, Patzak, T, Tonazzo, A, Duchesneau, D, Mosca, L, Bogomilov, M, Karadzhov, Y, Matev, R, Tsenov, R, Akhmedov, E, Blennow, M, Lindner, M, Schwetz, T, Fernández Martinez, E, Maltoni, M, Menéndez, J, Giunti, C, González García, M, Salvado, J, Coloma, P, Huber, P, Li, T, López Pavón, J, Orme, C, Pascoli, S, Meloni, D, Tang, J, Winter, W, Ohlsson, T, Zhang, H, Scotto Lavina, L, Terranova, F, Bonesini, M, Tortora, L, Alekou, A, Aslaninejad, M, Bontoiu, C, Kurup, A, Jenner, L, Long, K, Pasternak, J, Pozimski, J, Back, J, Harrison, P, Beard, K, Bogacz, A, Berg, J, Stratakis, D, Witte, H, Snopok, P, Bliss, N, Cordwell, M, Moss, A, Pattalwar, S, Apollonio, M, European Commission, Bulgarian National Science Fund, Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-AstroParticule et Cosmologie (APC (UMR_7164)), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Edgecock, T. R., Caretta, O., Davenne, T., Densam, C., Fitton, M., Kelliher, D., Loveridge, P., Machida, S., Prior, C., Rogers, C., Rooney, M., Thomason, J., Wilcox, D., Wildner, E., Efthymiopoulos, I., Garoby, R., Gilardoni, S., Hansen, C., Benedetto, E., Jensen, E., Kosmicki, A., Martini, M., Osborne, J., Prior, G., Stora, T., Melo Mendonca, T., Vlachoudis, V., Waaijer, C., Cupial, P., Chance, A., Longhin, A., Payet, J., Zito, M., Baussan, E., Bobeth, C., Bouquerel, E., Dracos, M., Gaudiot, G., Lepers, B., Osswald, F., Poussot, P., Vassilopoulos, N., Wurtz, J., Zeter, V., Bielski, J., Kozien, M., Lacny, L., Skoczen, B., Szybinski, B., Ustrycka, A., Wroblewski, A., Marie Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, T. h., Delbar, T. h., Debray, F., Trophine, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Burt, G., Dexter, A. C., Kravchuk, V. L., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Laveder, M., Mazzocco, M., Mezzetto, M., Signorini, C., Vardaci, Emanuele, Di Nitto, A., Brondi, Augusto, LA RANA, Giovanni, Migliozzi, Pasquale, Moro, RENATA EMILIA MARIA, Palladino, Vittorio, Gelli, N., Berkovits, D., Hass, M., Hirsh, T. Y., Schaumann, M., Stahl, A., J. W. e. h. n. e. r., Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), and Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
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Nuclear and High Energy Physics ,Physics and Astronomy (miscellaneous) ,Physics::Instrumentation and Detectors ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,7. Clean energy ,01 natural sciences ,Nuclear physics ,neutrino ,0103 physical sciences ,Emma ,Fysik ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,ddc:530 ,010306 general physics ,Neutrino oscillation ,QC ,Astroparticle physics ,Physics ,Large Hadron Collider ,Beta-Beam ,010308 nuclear & particles physics ,Física ,Surfaces and Interfaces ,Accelerators and Storage Rings ,Neutrino detector ,Physical Sciences ,lcsh:QC770-798 ,Physics::Accelerator Physics ,Neutrino Factory ,High Energy Physics::Experiment ,Neutrino ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Storage ring ,Lepton - Abstract
The EUROnu project has studied three possible options for future, high intensity neutrino oscillation facilities in Europe. The first is a Super Beam, in which the neutrinos come from the decay of pions created by bombarding targets with a 4 MW proton beam from the CERN High Power Superconducting Proton Linac. The far detector for this facility is the 500 kt MEMPHYS water Cherenkov, located in the Frejus tunnel. The second facility is the Neutrino Factory, in which the neutrinos come from the decay of mu(+) and mu(-) beams in a storage ring. The far detector in this case is a 100 kt magnetized iron neutrino detector at a baseline of 2000 km. The third option is a Beta Beam, in which the neutrinos come from the decay of beta emitting isotopes, in particular He-6 and Ne-18, also stored in a ring. The far detector is also the MEMPHYS detector in the Frejus tunnel. EUROnu has undertaken conceptual designs of these facilities and studied the performance of the detectors. Based on this, it has determined the physics reach of each facility, in particular for the measurement of CP violation in the lepton sector, and estimated the cost of construction. These have demonstrated that the best facility to build is the Neutrino Factory. However, if a powerful proton driver is constructed for another purpose or if the MEMPHYS detector is built for astroparticle physics, the Super Beam also becomes very attractive., We acknowledge the financial support of the European Community under the European Commission Framework Program 7 Design Study: EUROnu, Project No. 212372 and from the National Science Fund of Bulgaria under Contract No. 02-149/07.10.2009
- Published
- 2013
26. Ghoshal-like test of equilibration in near-Fermi-energy heavy-ion collisions
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Wang, J, Keutgen, T, Wada, R, Hagel, K, Ma, Yg, Murray, M, Qin, L, Smith, P, Natowitz, Jb, Alfaro, R, Cibor, J, Botvina, A, Cinausero, M, EL MASRI, Y, Fabris, D, Keksis, A, Kowalski, S, Lunardon, Marcello, Makeev, A, Marie, N, Martin, E, Majka, Z, MARTINEZ DAVALOS, A, MENCHACA ROCHA, A, Nebbia, G, Moretto, Sandra, Prete, G, Rizzi, V, Ruangma, A, Shetty, Dv, Souliotis, G, Staszel, P, Veselsky, M, Viesti, Giuseppe, Winchester, Em, Yennello, Sj, Zipper, W, Ono, A, CA NIMROD COLLABORATION, Cyclotron institute, Cyclotron Institute, NIMROD, UCL - SC/PHYS - Département de physique, and UCL - MD/ESP - Ecole de santé publique
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Nuclear reaction ,Nuclear and High Energy Physics ,media_common.quotation_subject ,Nuclear Theory ,FOS: Physical sciences ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,Asymmetry ,Nuclear physics ,0103 physical sciences ,25.70.Pq, 24.60.Ky, 05.70.Jk ,Nuclear Experiment (nucl-ex) ,010306 general physics ,Nuclear Experiment ,media_common ,Physics ,Coalescence (physics) ,010308 nuclear & particles physics ,Projectile ,Fermi energy ,Atomic physics ,Nucleon ,Radioactive decay ,Excitation - Abstract
Calorimetric and coalescence techniques have been employed to probe equilibration for hot nuclei produced in heavy ion collisions of 35 to 55 MeV/u projectiles with medium mass targets. Entrance channel mass asymmetries and energies were selected in order that very hot composite nuclei of similar mass and excitation would remain after early stage pre-equilibrium particle emission. Inter-comparison of the properties and de-excitation patterns for these different systems provides evidence for the production of hot nuclei with decay patterns relatively independent of the specific entrance channel., 7 pages, 2 figures
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- 2005
27. Tracing the Evolution of Temperature in Near Fermi Energy Heavy Ion Collisions
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Wang, J, Wada, R, Keutgen, T, Hagel, K, Ma, Yg, Murray, M, Qin, L, Botvina, A, Kowalski, S, Materna, T, Natowitz, Jb, Alfarro, R, Cibor, J, Cinausero, M, Masri, Ye, Fabris, D, Fioretto, E, Keksis, A, Lunardon, Marcello, Makeev, A, Marie, N, Martin, E, Majka, Z, MARTINEZ DAVALOS, A, MENCHACA ROCHA, A, Nebbia, G, Prete, G, Rizzi, V, Ruangma, A, Shetty, Dv, Souliotis, G, Staszel, P, Veselsky, M, Viesti, Giuseppe, Winchester, Em, Yennello, Sj, Zipper, W, Ono, A, CA NIMROD COLLABORATION, Cyclotron institute, Cyclotron Institute, NIMROD, UCL - SC/PHYS - Département de physique, and UCL - MD/ESP - Ecole de santé publique
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Nuclear reaction ,Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,Projectile ,Time evolution ,FOS: Physical sciences ,Fermi energy ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Kinetic energy ,7. Clean energy ,01 natural sciences ,0103 physical sciences ,25.70.Pq, 24.60.Ky, 05.70.Jk ,Chemical equilibrium ,Atomic physics ,Nuclear Experiment (nucl-ex) ,010306 general physics ,Nuclear Experiment ,Cooling curve ,Dimensionless quantity - Abstract
The kinetic energy variation of emitted light clusters has been employed as a clock to explore the time evolution of the temperature for thermalizing composite systems produced in the reactions of 26A, 35A and 47A MeV $^{64}$Zn with $^{58}$Ni, $^{92}$Mo and $^{197}$Au. For each system investigated, the double isotope ratio temperature curve exhibits a high maximum apparent temperature, in the range of 10-25 MeV, at high ejectile velocity. These maximum values increase with increasing projectile energy and decrease with increasing target mass. The time at which the maximum in the temperature curve is reached ranges from 80 to 130 fm/c after contact. For each different target, the subsequent cooling curves for all three projectile energies are quite similar. Temperatures comparable to those of limiting temperature systematics are reached 30 to 40 fm/c after the times corresponding to the maxima, at a time when AMD-V transport model calculations predict entry into the final evaporative or fragmentation stage of de-excitation of the hot composite systems. Evidence for the establishment of thermal and chemical equilibrium is discussed., Comment: 9 pages, 5 figures
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- 2004
- Full Text
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28. Energy measurement and fragment identification using digital signals from partially depleted Si detectors
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Pasquali, G., Pastore, G., Neindre, N. Le, Ademard, G., Barlini, S., Bini, M., Bonnet, E., Borderie, B., Bougault, R., Bruno, M., Casini, G., Chbihi, A., Cinausero, M., Duenas, J. A., Edelbruck, P., Frankland, J. D., Gramegna, F., Gruyer, D., Kordyasz, A., Kozik, T., Lopez, O., Marchi, T., Morelli, L., Olmi, A., Ordine, A., Parlog, M., Piantelli, S., Poggi, G., Rivet, M. F., Rosato, E., Salomon, F., Spadaccini, G., Stefanini, A. A., Valdre, S., Vient, E., Twarog, T., Alba, R., Maiolino, C., Santonocito, D., G., Pasquali, G., Pastore, N., Le Neindre, G., Ademard, S., Barlini, M., Bini, E., Bonnet, B., Borderie, R., Bougault, M., Bruno, G., Casini, A., Chbihi, M., Cinausero, J. A., Dueña, P., Edelbruck, J. D., Frankland, F., Gramegna, D., Gruyer, A., Kordyasz, T., Kozik, O., Lopez, T., Marchi, L., Morelli, A., Olmi, A., Ordine, M., Pˆarlog, S., Piantelli, G., Poggi, M. F., Rivet, Rosato, Elio, F., Salomon, Spadaccini, Giulio, A. A., Stefanini, S., Valdrè, E., Vient, T., Twaróg, R., Alba, C., Maiolino, D., Santonocito, Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (INFN, Sezione di Firenze), Istituto Nazionale di Fisica Nucleare (INFN), Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), FAZIA, Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
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Physics ,Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,business.industry ,Detector ,FOS: Physical sciences ,Instrumentation and Detectors (physics.ins-det) ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Particle identification ,Particle detector ,Semiconductor detector ,psa ,isotopic identification ,Calibration ,Optoelectronics ,Figure of merit ,si telescope ,Wafer ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,Nuclear Experiment (nucl-ex) ,business ,Nuclear Experiment ,Voltage - Abstract
A study of identification properties of a Si-Si DE-E telescope exploiting an underdepleted residual-energy detector has been performed. Five different bias voltages have been used, one corresponding to full depletion, the others associated with a depleted layer ranging from 90% to 60% of the detector thickness. Fragment identification has been performed using either the DE-E technique or Pulse Shape Analysis (PSA). Both detectors are reverse mounted: particles enter from the low field side, to enhance the PSA performance. The achieved charge and mass resolution has been quantitatively expressed using a Figure of Merit (FoM). Charge collection efficiency has been evaluated and the possibility of energy calibration corrections has been considered. We find that the DE-E performance is not affected by incomplete depletion even when only 60% of the wafer is depleted. Isotopic separation capability improves at lower bias voltages with respect to full depletion, though charge identification thresholds are higher than at full depletion. Good isotopic identification via PSA has been obtained from a partially depleted detector whose doping uniformity is not good enough for isotopic identification at full depletion., Comment: 13 pages, 10 figures 5 tables; submitted to European Physical Journal A
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29. The FAZIA setup: A review on the electronics and the mechanical mounting
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F. Gramegna, M.F. Rivet, M. Falorsi, A. Zucchini, R. Revenko, J.D. Frankland, F. Saillant, J. Ropert, H. de Préaumont, S. Serra, Silvia Piantelli, P. Lecomte, J. A. Dueñas, D. Dell'Aquila, Y. Merrer, A. Chbihi, O. Lopez, N. Le Neindre, M. Pârlog, L. Grassi, G. Pastore, Giacomo Poggi, E. Vient, G. Mantovani, E. Scarlini, Gabriele Pasquali, M. Henri, G. Tortone, Alessandro Olmi, C. Maiolino, Giovanni Casini, Giuseppe Verde, C. Pain, P. Edelbruck, Eric Bonnet, Marek Palka, G. Spadaccini, A. Ordine, D. Fabris, R. Giordano, A. Buccola, C. Ciampi, Domenico Santonocito, E. Galichet, Tomasz Kozik, Krzysztof Korcyl, A. Camaiani, Elio Rosato, Andrea Stefanini, M. Kajetanowicz, B. Bougard, T. Marchi, A. Margotti, Mariano Vigilante, F. Salomon, A. Boiano, M. Cinausero, C. Frosin, R. Bougault, Simone Valdré, R. Alba, A. Richard, C. Soulet, Diego Gruyer, Luca Morelli, G. Brulin, Magda Cicerchia, E. Wanlin, P. Desrues, M. Bruno, I. Lombardo, M. Guerzoni, S. Upadhyaya, Maurizio Bini, A.J. Kordyasz, G. Wittwer, A. Vanzanella, P. Ottanelli, G. Tobia, Sandro Barlini, B. Borderie, Valdre, S., Casini, G., Le Neindre, N., Bini, M., Boiano, A., Borderie, B., Edelbruck, P., Poggi, G., Salomon, F., Tortone, G., Alba, R., Barlini, S., Bonnet, E., Bougard, B., Bougault, R., Brulin, G., Bruno, M., Buccola, A., Camaiani, A., Chbihi, A., Ciampi, C., Cicerchia, M., Cinausero, M., Dell'Aquila, D., Desrues, P., Duenas, J. A., Fabris, D., Falorsi, M., Frankland, J. D., Frosin, C., Galichet, E., Giordano, R., Gramegna, F., Grassi, L., Gruyer, D., Guerzoni, M., Henri, M., Kajetanowicz, M., Korcyl, K., Kordyasz, A., Kozik, T., Lecomte, P., Lombardo, I., Lopez, O., Maiolino, C., Mantovani, G., Marchi, T., Margotti, A., Merrer, Y., Morelli, L., Olmi, A., Ordine, A., Ottanelli, P., Pain, C., Palka, M., Parlog, M., Pasquali, G., Pastore, G., Piantelli, S., de Preaumont, H., Revenko, R., Richard, A., Rivet, M. F., Ropert, J., Rosato, E., Saillant, F., Santonocito, D., Scarlini, E., Serra, S., Soulet, C., Spadaccini, G., Stefanini, A. A., Tobia, G., Upadhyaya, S., Vanzanella, A., Verde, G., Vient, E., Vigilante, M., Wanlin, E., Wittwer, G., Zucchini, A., Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - Faculté des Sciences et des Techniques, Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Conservatoire National des Arts et Métiers [CNAM] (CNAM), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), and HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)
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Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,data acquisition ,Telescope array ,Nuclear physics ,Measure (physics) ,FOS: Physical sciences ,FAZIA ,Heavy-ion reaction ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,Front end electronics ,Data acquisition ,nuclear physics ,0103 physical sciences ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,Electronics ,Nuclear Experiment (nucl-ex) ,heavy-ion reactions ,010306 general physics ,Nuclear Experiment ,Instrumentation ,TRACE (psycholinguistics) ,Physics ,010308 nuclear & particles physics ,29.40.Wk ,Instrumentation and Detectors (physics.ins-det) ,29.85.Ca ,front-end electronics ,Heavy-ion reactions ,Front-end electronics ,telescope array ,Nuclear physic ,Systems engineering ,Front-end electronic - Abstract
In this paper the technological aspects of the FAZIA array will be explored. After a productive commissioning phase, FAZIA blocks started to measure and give very useful data to explore the physics of Fermi energy heavy-ion reactions. This was possible thanks to many technical measures and innovations developed in the commissioning phase and tuned during the first experimental campaigns. This paper gives a detailed description of the present status of the FAZIA setup from the electronic and mechanical point of view, trying also to trace a path for new improvements and refinements of the apparatus., 17 pages, 9 figures
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- 2019
30. Enhanced alpha-particle production from fusion evaporation reactions leading to Ti-46
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F. Gramegna, S. Leoni, Giovanni Casini, Giuseppe Verde, Lorenzo Domenichetti, J. Mabiala, Silvia Piantelli, Luca Morelli, Giuseppe Andreetta, Tommaso Marchi, M. Bruno, Gabriele Pasquali, M. D'Agostino, Sandro Barlini, Daniele Dell’Aquila, Nicla Gelli, L. Scomparin, C. Frosin, Antonio Caciolli, V. L. Kravchuk, P. Ottanelli, Maurizio Bini, G. Mantovani, A. Camaiani, G. Collazuol, G. Pastore, Alessandro Olmi, D. Mengoni, R. Bolzonella, B. Fornal, Ivano Lombardo, A. Buccola, Diego Gruyer, Magda Cicerchia, M. Degerlier, N. Cieplicka-Oryńczak, Daniela Fabris, M. Cinausero, Maria Vittoria Managlia, Simone Valdré, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Cicerchia, M., Gramegna, F., Fabris, D., Cinausero, M., Marchi, T., Andreetta, G., Barlini, S., Bini, M., Bolzonella, R., Bruno, M., Buccola, A., Caciolli, A., Camaiani, A., Casini, G., Cieplicka-Orynczak, N., Collazuol, G., D'Agostino, M., Degerlier, M., Dell'Aquila, D., Domenichetti, L., Fornal, B., Frosin, C., Gelli, N., Gruyer, D., Kravchuk, V. L., Leoni, S., Lombardo, I., Mabiala, J., Managlia, M. V., Mantovani, G., Mengoni, D., Morelli, L., Olmi, A., Ottanelli, P., Pasquali, G., Pastore, G., Piantelli, S., Scomparin, L., Valdre, S., and Verde, G.
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Nuclear reaction ,Nuclear and High Energy Physics ,Evaporation ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,nuclear reaction ,Physics, Particles & Fields ,Fusion-evaporation ,0103 physical sciences ,Charged particles identification ,α-emission ,010306 general physics ,Physics ,Fusion ,Science & Technology ,010308 nuclear & particles physics ,alpha-emission ,charged particles identification ,fusion-evaporation ,Physics, Nuclear ,Chemical engineering ,Physical Sciences ,α particles - Abstract
In this paper, we report a detailed study on the de-excitation of the 46Ti compound nucleus populated by means of four different reactions: 16O + 30Si at 7 and 8 AMeV, 18O + 28Si at 7 AMeV and 19F + 27Al at 7 AMeV. The GARFIELD detection array was used to measure the light charged particles and the heavy fragments emitted. This setup covers a large fraction of the solid angle with high-granularity. Complete events are chosen through total charge (Z TOT = 22) detection. Fusion-evaporation events are selected based on the condition that only one heavy fragment is detected in coincidence with the light charged particles. The analysis of global observables, such as charge distribution and light charged particle multiplicities, is compatible with the formation of a thermalized compound nucleus for all the four reactions. Nevertheless, an enhanced emission of α-particles with respect to a pure statistical picture is observed at very forward angles (α-particles.
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- 2021
31. Study of the threshold anomaly effect in the reaction $$^{7}$$Li+$$^{208}$$Pb at energies around the Coulomb barrier
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P. K. Rath, C. Parascandolo, G. La Rana, Emanuele Vardaci, L. Stroe, M. Romoli, N. Gelli, D. Pierroutsakou, A. Vanzanella, A. Boiano, M. Cinausero, Lorenzo Fortunato, A. Guglielmetti, A. Di Nitto, Francesca Soramel, M. La Commara, C. Mazzocchi, C. Signorini, M. Mazzocco, G. Prete, Franco Lucarelli, Vardaci, E., Rath, P. K., Mazzocco, M., Nitto, A. Di, La Rana, G., Parascandolo, C., Pierroutsakou, D., Romoli, M., Boiano, A., Vanzanella, A., Cinausero, M., Prete, G., Gelli, N., Lucarelli, F., Mazzocchi, C., La Commara, M., Fortunato, L., Guglielmetti, A., Soramel, F., Stroe, L., and Signorini, C.
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Elastic scattering ,Physics ,Coulomb barrier ,nuclear reactions ,heavy ions ,Nuclear and High Energy Physics ,Range (particle radiation) ,Dispersion relation ,Hadron ,Nuclear fusion ,Order (ring theory) ,Atomic physics ,Anomaly (physics) - Abstract
The elastic scattering in the reaction $$^{7}$$ 7 Li+$$^{208}$$ 208 Pb was investigated in the bombarding energy range from 25 to 39 MeV. The real and imaginary parts of the optical potential were analyzed by using a phenomenological potential. A dispersion relation analysis is presented in order to investigate the threshold anomaly effect. It is concluded that $$^{7}$$ 7 Li has an intermediate behavior between the tightly bound nuclei such as $$^{16}$$ 16 O and the loosely bound nuclei such as $$^{6}$$ 6 Li where the lack of the threshold anomaly is unambiguously observed. Reaction cross sections are also extracted from the elastic scattering data and its comparison with the ones of other systems has been performed to draw hints on the effect of the breakup channel.
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- 2021
32. FAZIA: A new performing detector for charged particles
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G. Mantovani, A Chibli, D. Fabris, Andrea Stefanini, Diego Gruyer, T. Marchi, E Bonnet, N. LeNeindre, Magda Cicerchia, R. Bougault, Tomasz Kozik, Silvia Piantelli, J. A. Dueñas, Sahil Upadhyaya, O. Lopez, J. Quicray, Simone Valdré, M. Cinausero, Gabriele Pasquali, Ivano Lombardo, A. Buccola, M. Henri, Giovanni Casini, Giuseppe Verde, Mariano Vigilante, C. Ciampi, A. Camaiani, E. Vient, A.J. Kordyasz, J.D. Frankland, Giacomo Poggi, C. Frosin, Sandro Barlini, Maurizio Bini, P. Ottanelli, B Borderie, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Barlini, S., Bini, M., Buccola, A., Camaiani, A., Casini, G., Ciampi, C., Frosin, C., Ottanelli, P., Pasquali, G., Piantelli, S., Poggi, G., Stefanini, A. A., Valdre, S., Bonnet, E., Borderie, B., Bougault, R., Chibli, A., Cicerchia, M., Cinausero, M., Dueas, J. A., Fabris, D., Frankland, J., Gruyer, D., Henri, M., Kordyasz, A., Kozik, T., Leneindre, N., Lombardo, I., Lopez, O., Mantovani, G., Marchi, T., Quicray, J., Upadhyaya, S., Verde, G., Vient, E., and Vigilante, M.
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Physics ,History ,business.industry ,Physics::Instrumentation and Detectors ,Detector ,Charge (physics) ,Fermi energy ,Charged particle ,030218 nuclear medicine & medical imaging ,Computer Science Applications ,Education ,03 medical and health sciences ,0302 clinical medicine ,Optics ,Domain (ring theory) ,Pulse shape analysis ,Mass discrimination ,Electronics ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,business - Abstract
The FAZIA apparatus is a new detector designed for the Fermi energy domain for charged particles based on three stages telescopes: Silicon detector (300 μm thick), Silicon detector (500 μm thick) and CsI(Tl) (10 cm). Using the ΔE-E technique and the Pulse Shape Analysis (PSA) it permits the charge and mass discrimination up to more than Z=20. In the following, some details about the FAZIA detectors and electronics, their performance and the frst experimental campaigns already performed will be discussed.
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- 2020
33. Evaporation and fission decay of Er 158 composite nuclei within the statistical model
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P. N. Nadtochy, D. Pierroutsakou, G. La Rana, N. Gelli, A. Di Nitto, C. Parascandolo, A. Pulcini, A. Ordine, A. Boiano, M. Cinausero, F. Davide, G. N. Knyazheva, E. M. Kozulin, G. Prete, Emanuele Vardaci, Di Nitto, A., Vardaci, E., La Rana, G., Nadtochy, P. N., Boiano, A., Cinausero, M., Prete, G., Gelli, N., Kozulin, E. M., Knyazheva, G. N., Ordine, A., Davide, F., Parascandolo, C., Pierroutsakou, D., and Pulcini, A.
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Physics ,Proton ,010308 nuclear & particles physics ,Fission ,Nuclear Theory ,Order (ring theory) ,Observable ,01 natural sciences ,Charged particle ,Nuclear physics ,0103 physical sciences ,Neutron ,Nuclear Experiment ,010306 general physics ,Excitation ,Energy (signal processing) - Abstract
Light charged particles emitted by the compound nucleus $^{158}\mathrm{Er}$ produced in the reaction $^{32}\mathrm{S}$ $(180 \mathrm{MeV})+^{126}\mathrm{Te}$, at the excitation energy ${E}_{x}=92$ MeV, have been measured at Laboratori Nazionali di Legnaro in coincidence with fission fragments and evaporation residues. The $4\ensuremath{\pi}$ detector array $8\ensuremath{\pi}\mathrm{LP}$ coupled to a system of parallel-plate avalanche counters to detect evaporation residues has been used. Data have been analyzed in the framework of the statistical model of evaporation with the code pace2_n11. This enlarged version of the code pace2 has been used to reproduce the large set of observables measured in the fusion-evaporation and fusion-fission channels along with experimental prescission neutron multiplicity and fission cross section taken from literature. It is found that the simultaneous reproduction of the prescission neutron, proton, and $\ensuremath{\alpha}$-particle multiplicities can be obtained with zero fission delay without dynamical effects. However, the same set of model input parameters does not allow us to reproduce proton and $\ensuremath{\alpha}$-particle multiplicities in the evaporation channel. Extensive calculations, with different sets of parameters, show the limits of the statistical model in reproducing the whole set of data. This work evidences the importance of measuring a large set of observables in order to obtain a reliable description of the decay of the compound nucleus, and in particular of the fission process.
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- 2020
34. The SPES multi-foil direct target
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Andrighetto, A., Biasetto, L., Manzolaro, M., Barbui, M., Bisoffi, G., Carturan, S., Cinausero, M., Gramegna, F., Prete, G., Rizzi, V., Antonucci, C., Cevolani, S., Petrovich, C., Colombo, P., Meneghetti, G., Di Bernardo, P., Zanonato, P., Cristofolini, I., Fontanari, V., and Monelli, B.
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NUCLEAR physics , *PHYSICS , *NUCLEAR energy , *NUCLEAR warfare - Abstract
Abstract: A solution for a target aimed at the production of exotic nuclei will be analyzed. In the proposed configuration a primary proton beam (40MeV, 0.2mA) directly impinges on uranium carbide disks. The exotic nuclei are produced as a result of high energy fissions in 238U compounds. The system has been conceived in order to obtain both a high number of neutron-rich atoms, originating from about 1013 fissionss−1 and a low power deposition in the target. The target container is held at about 2000°C in order to maximize the number of extracted fission fragments. [Copyright &y& Elsevier]
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- 2008
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35. The detector system of the BigSol spectrometer at Texas A & M
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Barbui, M., Pesente, S., Nebbia, G., Fabris, D., Lunardon, M., Moretto, S., Viesti, G., Cinausero, M., Prete, G., Rizzi, V., Bocci, F., Chubarian, G., Hagel, K., Kowalski, S., Materna, T., Natowitz, J.B., Souliotis, G., Qin, L., Wada, R., and Wang, J.
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ION bombardment , *FORM perception , *ALPHA rays , *PHYSICS - Abstract
Abstract: The detector system used at the first focus of the BigSol superconducting solenoid beam line at the Texas A & M superconducting cyclotron is presented. The system is composed of a position sensitive PPAC followed by an ionization chamber (IC) with a YAP(Ce) array in its back plane. The position sensitivity of the PPAC as well the energy resolution of the IC is investigated as a function of the counting rate. Pulse height, pulse height resolution and time resolution of the YAP(Ce) crystals are studied for a variety of heavy ion beams ranging from 20Ne to 197Au at energies from 15AMeV to 40AMeV. The pulse shape discrimination method using a Flash ADC is also explored, in order to identify decay products (alpha particles and electron/gamma) from the fragments implanted in the scintillator. [Copyright &y& Elsevier]
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- 2007
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36. New investigations on the 32S(3He,d)33Cl reaction at 9.6 MeV bombarding energy
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Leandro Gasques, Sandro Barlini, D. Fabris, M. D’Andrea, Giovanni Casini, Silvia Piantelli, Daniele Dell’Aquila, M. Cinausero, V. Rigato, M. Degerlier, Tommaso Marchi, Alinka Lepine-Szily, F. Gramegna, Simone Valdré, M. Bruno, Magda Cicerchia, A. Buccola, Sara Carturan, L. Scomparin, Mariano Vigilante, G. Mantovani, R. Bolzonella, Ivano Lombardo, Cinausero, M., Dell'Aquila, D., Lombardo, I., Vigilante, M., Barlini, S., Bolzonella, R., Bruno, M., Buccola, A., Carturan, S. M., Casini, G., Cicerchia, M., D'Andrea, M., Degerlier, M., Fabris, D., Gasques, L., Gramegna, F., Lepine-Szily, A., Mantovani, G., Marchi, T., Piantelli, S., Rigato, V., Scomparin, L., and Valdre, S.
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Physics ,History ,Proton ,Silicon ,010308 nuclear & particles physics ,QC1-999 ,Detector ,Nuclear Theory ,Theoretical models ,chemistry.chemical_element ,01 natural sciences ,Computer Science Applications ,Education ,Nuclear physics ,Hodoscope ,chemistry ,Deuterium ,0103 physical sciences ,010306 general physics ,Spectroscopy ,Nuclear Experiment ,Energy (signal processing) - Abstract
The 32S(3He,d)33Cl one-proton transfer reaction is a powerful tool to investigate the spectroscopy of low-lying states in the proton-rich 33Cl nucleus. However, the extraction of firm differential cross-section data at various angles to benchmark and constrain theoretical models is made challenging by the presence of competitive reactions on target contaminants. In this paper we report on a recent measurement using a new generation hodoscope of silicon detectors, capable to detect and identify emitted deuterons down to energies of the order of 2 MeV. The high angular segmentation of our hodoscope combined with a suitable target to control possible contaminants, allowed to unambiguously disentangle the contribution of various states in 33Cl, in particular the 2.352 MeV state lying just few tens of keV above the proton separation energy.
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- 2019
37. Study of the 32S(3He, d)33Cl one-proton transfer reaction with a new generation hodoscope
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D. Dell'Aquila, I. Lombardo, G. Mantovani, Sandro Barlini, M. Cinausero, Leandro Gasques, Giovanni Casini, D. Fabris, Mariano Vigilante, T. Marchi, Silvia Piantelli, F. Gramegna, S Cartuan, Magda Cicerchia, R. Bolzonella, M. D’Andrea, A. Buccola, Alinka Lepine-Szily, M. Degerlier, M. Bruno, L. Scomparin, Simone Valdré, V. Rigato, Cinausero, M., Dell'Aquila, D., Lombardo, I., Vigilante, M., Barlini, S., Bolzonella, R., Bruno, M., Buccola, A., Cartuan, S., Casini, G., Cicerchia, M., D'Andrea, M., Degerlier, M., Fabris, D., Gasques, L., Gramegna, F., Lepine-Szily, A., Mantovani, G., Marchi, T., Piantelli, S., Rigato, V., Scomparin, L., and Valdre, S.
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Physics ,History ,Proton ,Detector ,Nuclear Theory ,Nuclear Structure ,Nuclear Clustering ,Light nuclei ,Spectral line ,Computer Science Applications ,Education ,Nuclear physics ,Hodoscope ,Deuterium ,Excited state ,Spectroscopy ,Ground state ,Nuclear Experiment ,Deuterium, Excited states, Ground state, Silicon detectors - Abstract
The 32S(3He,d)33Cl one-proton transfer reaction is a powerful tool to investigate the spectroscopy of low-lying states in the proton-rich 33Cl nucleus. However, the extraction of firm differential cross-section data at various angles, against which benchmarking theoretical models to correctly constrain the spectroscopy of 33Cl, is made challenging by the presence of competitive reaction products contaminating the detected energy spectra. We have recently measured the 32S(3He,d)33Cl reaction at 9.8 MeV incident energy by using a new generation hodoscope of silicon detectors, capable to detect and identify emitted deuterons down to energies of the order of 2 MeV. The high angular segmentation of our hodoscope allowed to unambiguously disentangle the contribution of one-proton transfer reactions in the ground state of 33Cl and in its 0.810 MeV, 2.352 MeV, 2.685 MeV, 2.846 MeV excited states from contaminant deuteron-emitting reactions. These data will be crucial to help to constrain Jπ and spectroscopic factor C 2 Sp values of low-lying 33Cl states, still ambiguous in the literature. The present status of the analysis is discussed in the paper.
- Published
- 2019
38. Study of the 33Cl spectroscopic factors via the 32S(3He, d)33Cl one-proton transfer reaction
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A. Ordine, Mariano Vigilante, F. Gramegna, Leandro Gasques, D. Fabris, R. Bolzonella, Sandro Barlini, Giovanni Casini, Giuseppe Verde, G. Maggioni, T. Marchi, M. Cinausero, G. Mantovani, Ivano Lombardo, P. Ottanelli, Silvia Piantelli, C. Ciampi, S. Carturan, A. Buccola, Simone Valdré, M. Degerlier, V. Rigato, V. A. B. Zagatto, D. Dell'Aquila, Magda Cicerchia, M. Bruno, A. Camaiani, Gabriele Pasquali, L. Scomparin, M. Russo, C. Frosin, M. D’Andrea, Alinka Lepine-Szily, Lombardo, I., Dell'Aquila, D., Cinausero, M., Gasques, L. R., Vigilante, M., Zagatto, V. A. B., Barlini, S., Bolzonella, R., Bruno, M., Buccola, A., Camaiani, A., Carturan, S. M., Casini, G., Ciampi, C., Cicerchia, M., D'Andrea, M., Degerlier, M., Fabris, D., Frosin, C., Gramegna, F., Lepine-Szily, A., Maggioni, G., Mantovani, G., Marchi, T., Ordine, A., Ottanelli, P., Pasquali, G., Piantelli, S., Rigato, V., Russo, M., Scomparin, L., Valdre, S., and Verde, G.
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Physics ,Nuclear and High Energy Physics ,Proton ,Proton transfer reaction ,TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY ,DWBA and CRC calculation ,Physical chemistry ,DWBA and CRC calculations ,Proton transfer reactions ,Spectroscopic factors - Abstract
In this paper we discuss new experimental data on the one-proton transfer reaction 32S(3He, d)33Cl* at 9.68 MeV bombarding energy. An enriched 32S target and a high-granularity hodoscope were used to obtain data for proton transfer reactions to bound and unbound states in 33Cl. Angular distributions were interpreted by means of finite-range DWBA and coupled-channel calculations. The obtained spectroscopic factors have been compared with previous results reported in the literature and with shell model calculations.
- Published
- 2021
39. A study on the dependence of nuclear viscosity on temperature
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Nicla Gelli, M. Ashaduzzaman, A. Pulcini, E. M. Kozulin, M. Cinausero, I. M. Itkis, G. Prete, P. N. Nadtochy, D. Quero, G. La Rana, G. N. Knyazheva, A. Di Nitto, Emanuele Vardaci, F. Davide, Giuseppe Mandaglio, Marina Trimarchi, Antonio Trifirò, Vardaci, E., Di Nitto, A., Nadtochy, P. N., La Rana, G., Cinausero, M., Prete, G., Gelli, N., Ashaduzzaman, M., Davide, F., Pulcini, A., Quero, D., Kozulin, E. M., Knyazheva, G. N., and Itkis, I. M.
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Physics ,History ,Viscosity ,Thermodynamics ,Computer Science Applications ,Education - Abstract
Nuclear viscosity is an irreplaceable ingredient of nuclear fission collective dynamical models. It drives the exchange of energy between the collective variables and the thermal bath of single particle degrees of freedom. Its dependence on the shape and temperature is a matter of controversy. By using systems of intermediate fissility we have demonstrated in a recent study that the viscosity parameters is larger for compact shapes, and decreases for larger deformations of the fissioning system, at variance with the conclusions of the statistical model modified to include empirically viscosity and time scales. In this contribution we propose an experimental scenario to highlight the possible dependence of the viscosity from the temperature.
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- 2018
40. OSCAR: A new modular device for the identification and correlation of low energy particles
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A. Chbihi, N. Le Neindre, J.D. Frankland, A. Ordine, E. Bonnet, S. Valdrè, A. Camaiani, R. Bougault, M. Parlog, Q. Faible, D. Dell'Aquila, B. Borderie, Luca Morelli, A.J. Kordyasz, Giovanni Casini, Giuseppe Verde, Andrea Stefanini, D. Fabris, Tomasz Kozik, I. Lombardo, Tommaso Marchi, Giovanni Ausanio, L. Augey, Silvia Piantelli, E. Vient, Gabriele Pasquali, M. Bruno, R. LaTorre, G. Tortone, Domenico Santonocito, P. Ottanelli, Mariano Vigilante, R. Alba, M De Luca, Miguel A. Miranda, G. Pastore, Sandro Barlini, L. Francalanza, Diego Gruyer, Magda Cicerchia, L. Grassi, O. Lopez, M. Cinausero, F. Gramegna, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Dell'Aquila, D., Lombardo, I., Verde, G., Vigilante, M., Ausanio, G., Ordine, A., Miranda, M., De Luca, M., Alba, R., Augey, L., Barlini, S., Bonnet, E., Borderie, B., Bougault, R., Bruno, M., Camaiani, A., Casini, G., Chbihi, A., Cicerchia, M., Cinausero, M., Fabris, D., Faible, Q., Francalanza, L., Frankland, J. D., Grassi, L., Gramegna, F., Gruyer, D., Kordyasz, A. J., Kozik, T., Latorre, R., Le Neindre, N., Lopez, O., Marchi, T., Morelli, L., Ottanelli, P., Parlog, M., Pastore, G., Pasquali, G., Piantelli, S., Santonocito, D., Stefanini, A. A., Tortone, G., Valdrè, S., Vient, E., Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
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Nuclear and High Energy Physics ,Work (thermodynamics) ,Photon ,Nuclear physics detectors ,particle identification ,thin silicon detectors ,01 natural sciences ,Spectral line ,ion channeling ,Nuclear physics ,Modular detectors ,Hodoscope ,0103 physical sciences ,Isospin dynamics ,Thin silicon detectors ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,010306 general physics ,Nuclear Experiment ,Instrumentation ,silicon uniformity ,ComputingMilieux_MISCELLANEOUS ,Nuclear and High Energy Physic ,Physics ,010308 nuclear & particles physics ,Detector ,Low identification thresholds ,Modular detector ,Isospin ,modular detectors ,Ion channeling ,Low identification threshold ,low identification thresholds ,Silicon uniformity ,isospin dynamics ,Transport phenomena ,Isospin dynamic ,Energy (signal processing) ,Thin silicon detector - Abstract
A new modular and high versatility hodoscope , OSCAR, has been developed and characterized. The aim of this hodoscope is to work as an ancillary detector of present large acceptance heavy ion detectors in specific angular regions where low thresholds and high granularities are needed. We discuss the capabilities of OSCAR in the Δ E–E identification of very low energy light particles, providing a precise map of the thickness uniformity of the Δ E (SSSSD, 20 μ m ) stage and showing how the thickness gradient affects the identification of particles. Energy spectra of light identified particles produced in Ca+Ca collisions at 35 AMeV are used to investigate isospin transport phenomena involving the emission of low energy particles from the quasi-target (QT) source in semi-peripheral nuclear collisions. The possibility to explore particle–particle correlations are also discussed.
- Published
- 2018
41. Pre-equilibrium emission and clustering in medium- mass nuclei:46Ti from16O +30Si, 18O +28Si, 19F +27Al
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Emanuele Vardaci, Giovanni Casini, M. D'Agostino, F. Gramegna, M. Degerlier, Ivano Lombardo, G. Collazzuol, Diego Gruyer, Daniele Dell’Aquila, D. Fabris, Magda Cicerchia, N. Cieplicka, Luca Morelli, S. Leoni, Alessandro Olmi, Giacomo Poggi, D. Mengoni, J. Mabiala, Antonio Caciolli, Gabriele Pasquali, M. Bruno, G. Pastore, B. Fornal, Simone Valdré, M. Cinausero, Maurizio Bini, P. Ottanelli, Sandro Barlini, Nicla Gelli, Silvia Piantelli, Tommaso Marchi, E. Vardaci, I. Lombardo, Cicerchia, M., Marchi, T., Gramegna, F., Cinausero, M., Mabiala, J., Fabris, D., Caciolli, A., Collazzuol, G., Mengoni, D., Degerlier, M., Morelli, L., Bruno, M., D'Agostino, M., Barlini, S., Bini, M., Pasquali, G., Piantelli, S., Casini, G., Pastore, G., Gruyer, D., Ottanelli, P., Valdrè, S., Gelli, N., Olmi, A., Poggi, G., Vardaci, E., Lombardo, I., Dell'Aquila, D., Leoni, S., Cieplicka, N., and Fornal, B.
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Nuclear reaction ,Physics ,Nuclear physics ,History ,Valence (chemistry) ,Excitation energy ,Silicon, Cluster property ,Comparative studies ,Experimental campaign ,Light charged particles ,Nuclear clusters ,Nuclear reactions ,Cluster (physics) ,Neutron ,Cluster analysis ,Charged particle ,Computer Science Applications ,Education - Abstract
The study of nuclear cluster states bound by valence neutrons is a field of recent large interest. In particular, it is interesting to study the pre-formation of α-clusters in α-conjugate nuclei and the dynamical condensation of clusters during nuclear reactions. The NUCL-EX collaboration (INFN, Italy) is carrying out a research campaign studying preequilibrium emission of light charged particles and cluster properties of light and medium mass nuclei. For this purpose, a comparative study of the three nuclear reactions: O 16 + Si 30 , O 18 + Si 28 and F 19 + 27Al, has been recently carried out using the GARFIELD+RCo 4π setup. After a general introduction on the experimental campaign, the preliminary results for the three systems are presented.
- Published
- 2017
42. Constraining Hot Sources in Central Heavy-ion Collisions Below 20 MeV/$u$
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B. Fornal, Alessandro Olmi, O. V. Fotina, G. Prete, Luca Morelli, J. Mabiala, D. Fabris, Emanuele Vardaci, Maurizio Bini, M. D'Agostino, B. Szpak, S. Leoni, Giorgio Baiocco, Simone Valdré, A. Maj, Giovanni Casini, Maria Colonna, Magda Cicerchia, S. Myalski, B. Million, S. Brambilla, F. C. L. Crespi, M. Kmiecik, M. Zieblinski, A. Bracco, Gabriele Pasquali, M. Bruno, Sandro Barlini, A. Giaz, F. Camera, W. Meczynski, G. Benzoni, O. Wieland, M. Matejska-Minda, V. L. Kravchuk, B. Wasilewska, R. Nicolini, N. Blasi, Silvia Piantelli, F. Gramegna, Tommaso Marchi, K. Mazurek, J. Styczen, S. Appannababu, D. Montanari, M. Degerlier, M. Cinausero, M. Krzysiek, M. Ciemala, P. Bednarczyk, Valdré, S., Piantelli, S., Casini, G., Barlini, S., Ciemała, M., Kmiecik, M., Maj, A., Mazurek, K., Cinausero, M., Gramegna, F., Kravchuk, V. L., Morelli, L., Marchi, T., Appannababu, S., Baiocco, G., Bednarczyk, P., Benzoni, G., Bini, M., Blasi, N., Bracco, A., Brambilla, S., Bruno, M., Camera, F., Cicerchia, M., Colonna, M., Crespi, F. C. L., D'Agostino, M., Degerlier, M., Fabris, D., Fornal, B., Fotina, O. V., Giaz, A., Krzysiek, M., Leoni, S., Mabiala, J., Matejska Minda, M., Męczyński, W., Million, B., Montanari, D., Myalski, S., Nicolini, R., Olmi, A., Pasquali, G., Prete, G., Styczeń, J., Szpak, B., Vardaci, Emanuele, Wasilewska, B., Wieland, O., and Ziębliński, M.
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Nuclear physics ,Physics ,Physics and Astronomy (all) ,General Physics and Astronomy ,Heavy ion - Abstract
Pre-equilibrium emissions affect the production of excited systems in nuclear reactions, thus modifying their properties which enter as input parameters in the comparison with statistical models. In this contribution, we discuss this subject referring to recent results from experiments performed at Legnaro National Laboratories (Italy) with the GARFIELD apparatus complemented with other detectors. ispartof: Acta Physica Polonica B vol:48 issue:3 pages:635-639 ispartof: location:Zakopane: POLAND status: published
- Published
- 2017
- Full Text
- View/download PDF
43. Pre-equilibrium emission to study clustering in nuclei
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Emanuele Vardaci, M. D'Agostino, O. V. Fotina, Tommaso Marchi, Silvia Piantelli, Giacomo Poggi, Akira Ono, D. Fabris, Maria Colonna, Magda Cicerchia, F. Gramegna, J. Mabiala, Sandro Barlini, G. Mantovani, M. Cinausero, Nicla Gelli, Maurizio Bini, Gabriele Pasquali, M. Bruno, M. Degerlier, Alessandro Olmi, Luca Morelli, Simone Valdré, V. L. Kravchuk, Giovanni Casini, E.C. Simpson, C. Simenel, K.J. Cook and I.P. Carter, Fabris, D., Gramegna, F., Cicerchia, M., Marchi, T., Barlini, S., Piantelli, S., Bini, M., Bruno, M., Casini, G., Cinausero, M., D'Agostino, M., Degerlier, M., Gelli, N., Mantovani, G., Morelli, L., Mabiala, J., Olmi, A., Pasquali, G., Poggi, G., Valdré, S., Vardaci, E., Fotina, O. V., Kravchuk, V. L., Colonna, M., Ono, A., Grand Accélérateur National d'Ions Lourds (GANIL), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
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Physics ,Light nucleus ,010308 nuclear & particles physics ,QC1-999 ,Evaporation ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear matter ,01 natural sciences ,Particle emission ,0103 physical sciences ,Compound system ,Atomic physics ,Nuclear Experiment ,010306 general physics ,Cluster analysis ,Beam (structure) - Abstract
International audience; Clustering structural properties in medium-mass systems have been investigated studying the competition between the evaporation and pre-equilibrium particle emission in central collisions. At variance with light nuclei, in the case of heavier nuclei there are no experimental evidences of such structure effects, since the determination of pre-formed clusters within nuclear matter is less obvious.The two systems 16O + 65Cu and 19F + 62Ni, leading to the same compound system 81Rb*, have been studied at the same beam velocity (16 AMeV). The experiments have been performed using the GARFIELD + RCo multi-detection system at the Legnaro National Laboratories.Recent results of the data analysis and of the comparison of the experimental data with different statistical and dynamical model calculations are reported in this contribution.
- Published
- 2017
44. Publisher’s Note: High intensity neutrino oscillation facilities in Europe [Phys. Rev. Accel. Beams16, 021002 (2013)]
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C. Bobeth, Maurizio Bonesini, M. Marie-Jeanne, M. Apollonio, C. Waaijer, Th. Delbar, Kenneth Long, Ilias Efthymiopoulos, T.K. Ghosh, François Debray, M. Hass, F. Gramegna, D. Wilcox, Jacques Wurtz, Sanjib Kumar Agarwalla, M. Buizza-Avanzini, Morteza Aslaninejad, Thomas Thuillier, C. Bontoiu, T. Lamy, A. Kurup, R. Matev, Silvia Pascoli, G. Collazuol, B. Szybinski, Patrick Huber, S. Machida, A. Bogacz, O. Mena, L. Agostino, G. Gaudiot, G. de Angelis, Marcos Dracos, J. Giraud, M. C. Gonzalez Garcia, E. Fernandez Martinez, L. Tortora, C. Rogers, F. Terranova, J. Bielski, Tommaso Marchi, Jordi Burguet-Castell, Emanuele Vardaci, Paul Soler, M. Marafini, R. Garoby, Erk Jensen, D. Duchesneau, P. Coloma, Walter Winter, M. Zito, M. Loiselet, M. Martini, He Zhang, L. Lacny, J. W. G. Thomason, Camilla Juul Hansen, A. Longhin, M. Cinausero, J. Payet, E. Benedetto, M. Cordwell, Michele Maltoni, C. Fourel, Simone Gilardoni, Shrikant Pattalwar, A. Chancé, Andrew Moss, M. Schaumann, Holger Witte, T. Stora, A. Stahl, Jordi Salvado, M. Kozien, David Neuffer, Eric Baussan, T. R. Edgecock, R. Moro, C. Trophine, Evgeny Kh. Akhmedov, P. F. Harrison, J. Tang, Elena Wildner, L. Mosca, Th. Keutgen, V. Zeter, K. B. Beard, G. La Rana, S. Mitrofanov, G. Prete, Andrea Donini, David Kelliher, Stéphane Veys, Tommy Ohlsson, A. Di Nitto, D. Meloni, J. J. Back, N. Vassilopoulos, Joachim Kopp, P. Poussot, A. Tonazzo, Carlo Giunti, Javier Fernandez Menendez, T. Y. Hirsh, D. Berkovits, Christopher Prior, Błażej Skoczeń, Y. Karadzhov, Manfred Lindner, V. Vlachoudis, Cécile Daversin, Amos Dexter, J. Lopez Pavon, A. Cervera Villanueva, Pavel Snopok, Mattias Blennow, Diktys Stratakis, Porfidio Hernández, M. Rooney, M. Mazzocco, P. Migliozzi, V. Palladino, J. Martín-Albo, M. Mezzetto, Christopher Orme, M. Bogomilov, A.K. Wróblewski, T. Davenne, J. S. Berg, N. Bliss, Thomas Schwetz, R. Bayes, A. Alekou, Jeson Jacob, M. Fitton, Jakob Wehner, Graeme Burt, Piotr Cupiał, T. Patzak, Nicla Gelli, T. Li, Jaroslaw Pasternak, Pascal Sortais, Marco Laveder, A. Bross, Jürgen Pozimski, C. Densam, O. Caretta, A. Laing, P. Loveridge, C. Signorini, T. Melo Mendonca, Ivan Izotov, J. J. Gomez Y Cadenas, B. Lepers, R. Tsenov, P. Balint, A. Kosmicki, A. Brondi, V. L. Kravchuk, L. J. Jenner, J. Osborne, Elian Bouquerel, A. Ustrzycka, L. Scotto-Lavina, F. Osswald, V. G. Zorin, L. Latrasse, G. Prior, R. Wands, Vadim Skalyga, Edgecock, T. . r., Caretta, O., Davenne, T., Densam, C., Fitton, M., Kelliher, D., Loveridge, P., Machida, S., Prior, C., Rogers, C., Rooney, M., Thomason, J., Wilcox, D., Wildner, E., Efthymiopoulos, I., Garoby, R., Gilardoni, S., Hansen, C., Benedetto, E., Jensen, E., Kosmicki, A., Martini, M., Osborne, J., Prior, G., Stora, T., Melo Mendonca, T., Vlachoudis, V., Waaijer, C., Cupial, P., Chance, A., Longhin, A., Payet, J., Zito, M., Baussan, E., Bobeth, C., Bouquerel, E., Dracos, M., Gaudiot, G., Lepers, B., Osswald, F., Poussot, P., Vassilopoulos, N., Wurtz, J., Zeter, V., Bielski, J., Kozien, M., Lacny, L., Skoczen, B., Szybinski, B., Ustrzycka, A., Wroblewski, A., Marie Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, T. h., Delbar, T. h., Debray, F., Trophine, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Burt, G., Dexter, A. . c., Kravchuk, V. . l., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Laveder, M., Mazzocco, M., Mezzetto, M., Signorini, C., Vardaci, Emanuele, DI NITTO, Antonio, Brondi, Augusto, LA RANA, Giovanni, Migliozzi, P., Moro, RENATA EMILIA MARIA, Palladino, Vittorio, Gelli, N., Berkovits, D., Hass, M., Hirsh, T. . y., Schaumann, M., Stahl, A., Wehner, J., Bross, A., Kopp, J., Neuffer, D., Wands, R., Bayes, R., Laing, A., Soler, P., Agarwalla, S. . k., Cervera Villanueva, A., Donini, A., Ghosh, T., Gomez Cadenas, J. . j., Hernandez, P., Martin Albo, J., Mena, O., Burguet Castell, J., Agostino, L., Buizza Avanzini, M., Marafini, M., Patzak, T., Tonazzo, A., Duchesneau, D., Mosca, L., Bogomilov, M., Karadzhov, Y., Matev, R., Tsenov, R., Akhmedov, E., Blennow, M., Lindner, M., Schwetz, T., Fernandez Martinez, E., Maltoni, M., Menendez, J., Giunti, C., Gonzalez Garcia, M. . c., Salvado, J., Coloma, P., Huber, P., Li, T., Lopez Pavon, J., Orme, C., Pascoli, S., Meloni, D., Tang, J., Winter, W., Ohlsson, T., Zhang, H., Scotto Lavina, L., Terranova, F., Bonesini, M., Tortora, L., Alekou, A., Aslaninejad, M., Bontoiu, C., Kurup, A., Jenner, L. . j., Long, K., Pasternak, J., Pozimski, J., Back, J. . j., Harrison, P., Beard, K., Bogacz, A., Berg, J. . s., Stratakis, D., Witte, H., Snopok, P., Bliss, N., Cordwell, M., Moss, A., Pattalwar, S., and Apollonio, M.
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Physics ,Nuclear physics ,Nuclear and High Energy Physics ,Physics and Astronomy (miscellaneous) ,High intensity ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Surfaces and Interfaces ,Neutrino oscillation - Published
- 2016
45. Examination of isospin effects in multi-dimensional Langevin fission dynamics
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N. Gelli, A. Di Nitto, M. Cinausero, A. Brondi, Franco Lucarelli, P. N. Nadtochy, G. Prete, R. Moro, Emanuele Vardaci, G. La Rana, Nadotchy, P. N., Vardaci, Emanuele, Di Nitto, A., Brondi, Augusto, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, Cinausero, M., Prete, G., Gelli, N., and Lucarelli, F.
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Physics ,Nuclear and High Energy Physics ,Proton ,Fission ,Nuclear Theory ,Alpha particle ,Kinetic energy ,Nuclear physics ,medicine.anatomical_structure ,Isospin ,medicine ,Particle ,Neutron ,Atomic physics ,Nuclear Experiment ,Nucleus - Abstract
One-dimensional and three-dimensional dynamical fission calculations based on Langevin equations are performed for the compound nuclei 194 Pb, 200 Pb, 206 Pb, 182 Hg, and 204 Hg to investigate the influence of the compound nucleus isospin on the prescission particle multiplicities and on the fission fragment mass–energy distribution. It is found that the prescission neutron, proton, and alpha particle multiplicities have approximately the same sensitivity to the dissipation strength for a given nucleus. This is at variance with conclusions of recent papers. The sensitivity of the calculated prescission particle multiplicities to the dissipation strength becomes higher with decreasing isospin of fissioning compound nucleus, and the increase of prescission particle multiplicities could reach 200%, when the reduction coefficient of one-body viscosity k s increases from 0.1 to 1, for the most neutron deficient nuclei considered. The variances of fission fragment mass and kinetic energy distributions are less sensitive to the change of dissipation strength than the prescission light particle multiplicities. A comparison to experimental data concerning 200 Pb nucleus is also presented.
- Published
- 2010
46. Fission dynamics of intermediate-fissility systems: A study within a stochastic three-dimensional approach
- Author
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A. Di Nitto, G. N. Knyazheva, G. Prete, D. Fabris, R. Moro, Nicla Gelli, A. Brondi, G. La Rana, M. Cinausero, E. M. Kozulin, P. K. Rath, G. Montagnoli, Emanuele Vardaci, I. M. Itkis, M. Ashaduzzaman, P. N. Nadtochy, Vardaci, Emanuele, Nadtochy, P. N., DI NITTO, Antonio, Brondi, Augusto, LA RANA, Giovanni, Moro, RENATA EMILIA MARIA, Rath, PRASANTA KUMAR, Ashaduzzaman, Md, Kozulin, E. M., Knyazheva, G. N., Itkis, I. M., Cinausero, M., Prete, G., Fabris, D., Montagnoli, G., and Gelli, N.
- Subjects
Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Fissility ,Fission ,Dynamics (mechanics) - Abstract
The system of intermediate fissility Ce-132 has been studied experimentally and theoretically to investigate the dissipation properties of nuclear matter. Cross sections of fusion-fission and evaporation-residue channels together with light charged particle multiplicities in both channels, their spectra, light charged particle-evaporation residue angular correlations, and mass-energy distribution of fission fragments have been measured. Theoretical analysis has been performed using a multidimensional stochastic approach coupled with a Hauser-Feshbach treatment of particle evaporation. The main conclusions are that the full one-body shape-dependent dissipation mechanism allows the reproduction of the full set of experimental data and that after a time tau(d) = 5 x 10(-21) s from the equilibrium configuration of the compound nucleus, fission decay can occur in a time that can span several orders of magnitude.
- Published
- 2015
47. Isospin transport and reaction mechanism in nuclear reactions in the range 20–40 MeV/n
- Author
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T. Marchi, Diego Gruyer, Sandro Barlini, Giacomo Poggi, E. Vient, M. Cinausero, Maurizio Bini, Tomasz Kozik, A. Chibhi, Eric Bonnet, M.F. Rivet, Luca Morelli, F. Gramegna, J.D. Frankland, Alessandro Olmi, Giovanni Casini, D. Fabris, Gabriele Pasquali, R. Bougault, Silvia Piantelli, M. Bruno, Andrea Stefanini, B. Borderie, Simone Valdré, G. Pastore, M. Parlog, Mariano Vigilante, Elio Rosato, N. Le Neindre, M. Degerlier, T. Twaróg, O. Lopez, Barlini, S., Piantelli, S., Casini, G., Olmi, A., Bini, M., Pasquali, G., Poggi, G., Stefanini, A. A., Bougault, R., Bonnet, E., Borderie, B., Chibhi, A., Frankland, J. D., Gruyer, D., Lopez, O., Le Neindre, N., Parlog, M., Rivet, M. F., Vient, E., Rosato, E., Vigilante, M., Bruno, M., Marchi, T., Morelli, L., Cinausero, M., Degerlier, M., Gramegna, F., Kozik, T., Twarog, T., Fabris, D., Valdré, S., Pastore, G., Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
- Subjects
Physics ,Nuclear reaction ,Particle physics ,Range (particle radiation) ,education.field_of_study ,010308 nuclear & particles physics ,Population ,Degrees of freedom (statistics) ,Charge (physics) ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,7. Clean energy ,01 natural sciences ,Measure (mathematics) ,Symmetry (physics) ,Nuclear physics ,Physics and Astronomy (all) ,Isospin ,0103 physical sciences ,010306 general physics ,education - Abstract
International audience; In recent years, many efforts have been devoted to the investigation of the isospin degree of freedom in nuclear reactions. Comparing systems involving partners with different N/Z, it has been possible to investigate the isospin transport process and its influence on the final products population. This can be then related to the symmetry energy term of the nuclear EOS. From the experimental point of view, this task requires detectors able to measure both charge and mass of the emitted products, in the widest possible range of energy and size of the fragments. With this objective, the FAZIA and GARFIELD+RCo apparatus have been used with success in some recent experiments.
- Published
- 2015
48. Pre-equilibrium emission and its possible relation to α-clustering in nuclei
- Author
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Silvia Piantelli, F. Gramegna, Giovanni Casini, Giacomo Poggi, Giorgio Baiocco, M. Cinausero, Simone Valdré, V. L. Kravchuk, D. Fabris, Gabriele Pasquali, M. Bruno, A. Brondi, O. V. Fotina, Nicla Gelli, T. Marchi, Alessandro Olmi, Emanuele Vardaci, R. Moro, M. D'Agostino, Luca Morelli, Sandro Barlini, Maurizio Bini, S. Appannababu, M. Degerlier, B. Borderie, R. Bougault, A. Pagano, S. Pirrone and G. Politi, Marchi, T., Gramegna, F., Fabris, D., Degerlier, M., Fotina, O. V., Kravchuk, V. L., D’Agostino, M., Morelli, L., Appannababu, S., Baiocco, G., Barlini, S., Bini, M., Brondi, Augusto, Bruno, M., Casini, G., Cinausero, M., Gelli, N., Moro, RENATA EMILIA MARIA, Olmi, A., Pasquali, G., Piantelli, S., Poggi, G., Valdré, S., and Vardaci, Emanuele
- Subjects
Physics ,Light nucleus ,Valence (chemistry) ,Particle separation ,QC1-999 ,Neutron ,Statistical physics ,Atomic physics ,Direct feedback ,Nuclear Experiment ,Cluster analysis ,Excitation - Abstract
The study of nuclear states built on clusters bound by valence neutrons in their molecular configurations is a field of large interest. Clustering becomes particularly important at the dripline, where weakly bound systems prevail. For light nuclei, at an excitation energy close to the particle separation value, there are experimental evidences of such structure effects, but this is still not the case for heavier nuclear systems. Several theoretical efforts have been done in the development of pre-formation alpha-clustering models, but there is still a lack of experimental data capable to give a direct feedback. The search of alpha-cluster evidences in medium-mass systems is therefore a new challenge which can give new hints in this field of research. In the past we have studied the reactions 250, 192 and 130 MeV O-16 + Sn-116, observing a significant increase in the fast emitted alpha-particle yield. This effect was ascribed to the presence of pre-formed alpha-clusters in the 16O projectile nucleus. To further investigate these aspects in a model independent way, a new experimental campaign has been performed with the GARFIELD + RCo set up. Two different reaction entrance channels (O-16 and F-19) at the same beam velocity (16AMeV) have been measured, leading to the same Rb-81* compound nucleus. In this contribution we report on the preliminary light-charged particles emission spectra obtained in coincidence with evaporation residues and their comparison with the results obtained from a Hybrid Exciton Model calculation.
- Published
- 2015
49. Cluster structure effects of projectile in7Li+208Pb reaction
- Author
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Nicla Gelli, A. Di Nitto, Alessandro Pulcini, M. La Commara, D. Quero, M. Cinausero, Ashaduzzaman, D. Pierroutsakou, G. Prete, C. Parascandolo, M. Romoli, M. Mazzocco, P. K. Rath, G. La Rana, F. Davide, Emanuele Vardaci, E. Vardaci, I. Lombardo, Rath, P. K., Ashaduzzaman, Md, Vardaci, E., Di Nitto, A., La Rana, G., Davide, F., Pulcini, Alessandro, Quero, D., Mazzocco, M., Pierroutsakou, D., Cinausero, M., Prete, G., La Commara, M., Parascandolo, C., Romoli, M., and Gelli, N.
- Subjects
Physics ,History ,Projectile ,breakup channel, weakly bound nuclei, Physics and Astronomy (all) ,Structure (category theory) ,Cluster (physics) ,Breakup ,Molecular physics ,Coincidence ,Computer Science Applications ,Education ,Communication channel - Abstract
Inclusive and exclusive cross sections have been measured for different projectile breakup channels. It is observed that the inclusive cross sections are larger than the exclusive ones. It is found that other processes, besides the direct breakup channel, significantly contribute to the inclusive channels. A clear alpha+x cluster structure has been found from coincidence data.
- Published
- 2017
50. Design of a neutrino source based on beta beams
- Author
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M. Schaumann, T. Stora, François Debray, M. Hass, G. de Angelis, M. Mezzetto, Tommaso Marchi, Achim Stahl, C. Signorini, Elena Wildner, T. Lamy, J. Giraud, M. Mazzocco, T. Melo Mendonca, Elian Bouquerel, Camilla Juul Hansen, Jakob Wehner, M. Loiselet, Cécile Daversin, G. La Rana, Jeson Jacob, Th. Keutgen, S. Mitrofanov, L. Latrasse, M. Cinausero, Pascal Sortais, A. Di Nitto, C. Fourel, A. Chancé, Vadim Skalyga, Amos Dexter, V. Vlachoudis, V. G. Zorin, M. Marie-Jeanne, A. Brondi, V. Palladino, Graeme Burt, Ivan Izotov, Christophe Trophime, F. Gramegna, T. Y. Hirsh, E. Benedetto, Nicla Gelli, Emanuele Vardaci, Erk Jensen, P. Balint, V. L. Kravchuk, J. Payet, R. Moro, G. Prete, Stéphane Veys, D. Berkovits, Thomas Thuillier, G. Collazuol, Th. Delbar, European Organization for Nuclear Research (CERN), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Laboratoire national des champs magnétiques intenses - Grenoble (LNCMI-G), Université Joseph Fourier - Grenoble 1 (UJF)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), UCL - SST/IRMP - Institut de recherche en mathématique et physique, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Wildner, E., Hansen, C., Benedetto, E., Jensen, E., Stora, T., Melo Mendonca, T., Vlachoudis, V., Bouquerel, E., Marie Jeanne, M., Balint, P., Fourel, C., Giraud, J., Jacob, J., Lamy, T., Latrasse, L., Sortais, P., Thuillier, T., Mitrofanov, S., Loiselet, M., Keutgen, T. h., Delbar, T. h., Debray, F., Trophime, C., Veys, S., Daversin, C., Zorin, V., Izotov, I., Skalyga, V., Chanc?, A., Payet, J., Burt, G., Dexter, A. ?. C., Kravchuk, V. ?. L., Marchi, T., Cinausero, M., Gramegna, F., De Angelis, G., Prete, G., Collazuol, G., Mezzetto, M., Vardaci, Emanuele, Di Nitto, A., Brondi, Augusto, LA RANA, Giovanni, Moro, R., Palladino, Vittorio, Gelli, N., Mazzocco, M., Signorini, C., Hirsh, T. ?. Y., Hass, M., Berkovits, D., Stahl, A., Schaumann, M., and Wehner, J.
- Subjects
Physics ,Nuclear and High Energy Physics ,Large Hadron Collider ,Physics and Astronomy (miscellaneous) ,Ion beam ,010308 nuclear & particles physics ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,Surfaces and Interfaces ,Electron ,Accelerators and Storage Rings ,7. Clean energy ,01 natural sciences ,Collimated light ,Linear particle accelerator ,Nuclear physics ,0103 physical sciences ,lcsh:QC770-798 ,Physics::Accelerator Physics ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Neutrino ,010306 general physics ,Storage ring ,Beam (structure) - Abstract
"Beta Beams" produce collimated pure electron (anti-) neutrino beams by accelerating beta active ions to high energies and having them decay in a race track shaped storage ring of 7 km circumference, the Decay Ring. EUROnu Beta Beams are based on CERN infrastructures and existing machines. Using existing machines may be an advantage for the cost evaluation, however, this choice is also constraining the Beta Beams. The isotope pair of choice for the Beta Beam is 6He and 18Ne. However before the EUROnu studies one of the needed isotopes, 18Ne, could not be produced in rates that satisfy the needs for physics reach of the Beta Beam. Therefore, studies of alternative beta emitters, 8Li and 8B, with properties interesting for a Beta Beam have been proposed and have been studied within EUROnu. These alternative isotopes could be produced by using a small storage ring, in which the beam traverses a target, creating the 8Li and 8B isotopes. This Production Ring, the injection Linac and the target system have been evaluated. Measurements of the cross-section of the reactions to produce the Beta Beam isotopes show interesting results. A device to collect the produced isotopes from the target has been developed and tested. However, the obtained rates of the 8Li and 8B, using the Production Ring for production of 8Li and 8B, is not yet, according to simulations, giving the rates of isotopes that would be needed. Therefore, a new method of producing the 18Ne isotope has been developed and tested giving good production rates. The baseline presented for the Beta Beam is therefore now to use the 6He and 18Ne isotopes for neutrino production. A 60 GHz ECRIS prototype, the first in the world, was developed and tested with contributions from EUROnu. The Beta Beam has to take into account the modifications of the injectors planned in view of LHC-upgrades. The Decay Ring lattices for the 8Li and 8B have been developed, the lattice for 6He and 18Ne has been optimized also to ensure the high intensity ion beam stability.
- Published
- 2014
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