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758 results on '"Guardo, G."'

1. Radioisotopes production using lasers: from basic science to applications

Author

Rodrigues, M. R. D., Bonasera, A., Scisciò, M., Pérez-Hernández, J. A., Ehret, M., Filippi, F., Andreoli, P. L., Huault, M., Larreur, H., Singappuli, D., Molloy, D., Raffestin, D., Alonzo, M., Rapisarda, G. G., Lattuada, D., Guardo, G. L., Verona, C., Consoli, Fe., Petringa, G., McNamee, A., La Cognata, M., Palmerini, S., Carriere, T., Cipriani, M., Di Giorgio, G., Cristofari, G., De Angelis, R., Cirrone, G. A. P., Margarone, D., Giuffrida, L., Batani, D., Nicolai, P., Batani, K., Lera, R., Volpe, L., Giulietti, D., Agarwal, S., Krupka, M., Singh, S., and Consoli, Fa.

Subjects
Nuclear Experiment, Physics - Applied Physics, Physics - Plasma Physics
Abstract

Laser technologies improved after the understanding of the Chirped Pulse Amplification (CPA) which allows energetic laser beams to be compressed to tens of femtosecond (fs) pulse durations and focused to few $\mu$m. Protons of tens of MeV can be accelerated using for instance the Target Normal Sheath Acceleration (TNSA) method and focused on secondary targets. In such conditions, nuclear reactions can occur and radioisotopes relevant for medical purposes be produced. High repetition lasers can be used to produce enough isotopes for medical applications. This route is competitive to conventional methods mostly based on accelerators. In this paper we study the production of $^{67}$Cu, $^{63}$Zn, $^{18}$F and $^{11}$C currently used in positron emission tomography (PET) and other applications. At the same time, we study the reaction $^{10}$B(p,$\alpha$)$^{7}$Be and $^{70}$Zn(p,4n)$^{67}$Ga to put further constraints to the proton distributions at different angles and to the reaction $^{11}$B(p,$\alpha$)$^{8}$Be relevant for energy production. The experiment was performed at the 1 petawatt (PW) laser facility at Vega III located in Salamanca-Spain. Angular distributions of radioisotopes in the forward (with respect to the laser direction) and backward directions were measured using a High Purity Germanium Detector (HPGE). Our results are reasonably reproduced by the numerical estimates following the approach of Kimura et al. (NIMA637(2011)167)

Published
2023

2. Feasibility of studying astrophysically important charged-particle emission with the variable energy $\gamma$-ray system at the Extreme Light Infrastructure -- Nuclear Physics facility

Author

Lan, H. Y., Luo, W., Xu, Y., Balabanski, D. L., Guardo, G. L., La Cognata, M., Lattuada, D., Matei, C., Pizzone, R. G., Rauscher, T., and Zhou, J. L.

Subjects
Nuclear Experiment, Astrophysics - Instrumentation and Methods for Astrophysics, Nuclear Theory
Abstract

In the environment of a hot plasma, as achieved in stellar explosions, capture and photodisintegration reactions proceeding on excited states in the nucleus can considerably contribute to the astrophysical reaction rate. Such reaction rates including the excited-state contribution are obtained from theoretical calculations as the direct experimental determination of these astrophysical rates is currently unfeasible. In the present study, ($\gamma$,p) and ($\gamma$,$\alpha$) reactions in the mass and energy range relevant to the astrophysical $p$ process are considered and the feasibility of measuring them with the ELISSA detector system at the future Variable Energy $\gamma$-ray (VEGA) facility at ELI-NP is investigated. The simulation results reveal that, for the ($\gamma$,p) reaction on twelve targets of $^{29}$Si, $^{56}$Fe, $^{74}$Se, $^{84}$Sr, $^{91}$Zr, $^{96,98}$Ru, $^{102}$Pd, $^{106}$Cd, and $^{115, 117, 119}$Sn, and the ($\gamma$,$\alpha$) reaction on five targets of $^{50}$V, $^{87}$Sr, $^{123,125}$Te, and $^{149}$Sm, the yields of the reaction channels with the transitions to the excited states in the residual nucleus are relevant and even dominant. It is further found that for each considered reaction, the total yields of the charged-particle $X$ may be dominantly contributed from one, two or three ($\gamma$,$X_{i}$) channels within a specific, narrow energy range of the incident $\gamma$-beam. Furthermore, the energy spectra of the ($\gamma$,$X_{i}$) channels with $0\leq i\leq 10$ are simulated for each considered reaction, with the incident $\gamma$-beam energies in the respective energy range as derived before. It becomes evident that measurements of the photon-induced reactions with charged-particle emissions considered in this work are feasible with the VEGA+ELISSA system and will provide knowledge useful for nuclear astrophysics., Comment: 11 figures, 17 pages

Published
2022
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3. Nuclear physics midterm plan at LNS

Author

Agodi, C., Cappuzzello, F., Cardella, G., Cirrone, G. A. P., De Filippo, E., Di Pietro, A., Gargano, A., La Cognata, M., Mascali, D., Milluzzo, G., Nania, R., Petringa, G., Pidatella, A., Pirrone, S., Pizzone, R. G., Rapisarda, G. G., Sergi, M. L., Tudisco, S., Valiente-Dobón, J. J., Vardaci, E., Abramczyk, H., Acosta, L., Adsley, P., Amaducci, S., Banerjee, T., Batani, D., Bellone, J., Bertulani, C., Biri, S., Bogachev, A., Bonanno, A., Bonasera, A., Borcea, C., Borghesi, M., Bortolussi, S., Boscolo, D., Brischetto, G. A., Burrello, S., Busso, M., Calabrese, S., Calinescu, S., Calvo, D., Capirossi, V., Carbone, D., Cardinali, A., Casini, G., Catalano, R., Cavallaro, M., Ceccuzzi, S., Celona, L., Cherubini, S., Chieffi, A., Ciraldo, I., Ciullo, G., Colonna, M., Cosentino, L., Cuttone, G., D’Agata, G., De Gregorio, G., Degl’Innocenti, S., Delaunay, F., Di Donato, L., Di Nitto, A., Dickel, T., Doria, D., Ducret, J. E., Durante, M., Esposito, J., Farrokhi, F., Fernandez Garcia, J. P., Figuera, P., Fisichella, M., Fulop, Z., Galatá, A., Galaviz Redondo, D., Gambacurta, D., Gammino, S., Geraci, E., Gizzi, L., Gnoffo, B., Groppi, F., Guardo, G. L., Guarrera, M., Hayakawa, S., Horst, F., Hou, S. Q., Jarota, A., José, J., Kar, S., Karpov, A., Kierzkowska-Pawlak, H., Kiss, G. G., Knyazheva, G., Koivisto, H., Koop, B., Kozulin, E., Kumar, D., Kurmanova, A., La Rana, G., Labate, L., Lamia, L., Lanza, E. G., Lay, J. A., Lattuada, D., Lenske, H., Limongi, M., Lipoglavsek, M., Lombardo, I., Mairani, A., Manetti, S., Marafini, M., Marcucci, L., Margarone, D., Martorana, N. S., Maunoury, L., Mauro, G. S., Mazzaglia, M., Mein, S., Mengoni, A., Milin, M., Mishra, B., Mou, L., Mrazek, J., Nadtochy, P., Naselli, E., Nicolai, P., Novikov, K., Oliva, A. A., Pagano, A., Pagano, E. V., Palmerini, S., Papa, M., Parodi, K., Patera, V., Pellumaj, J., Petrone, C., Piantelli, S., Pierroutsakou, D., Pinna, F., Politi, G., Postuma, I., Prajapati, P., Prada Moroni, P. G., Pupillo, G., Raffestin, D., Racz, R., Reidel, C.-A., Rifuggiato, D., Risitano, F., Rizzo, F., Roca Maza, X., Romano, S., Roso, L., Rotaru, F., Russo, A. D., Russotto, P., Saiko, V., Santonocito, D., Santopinto, E., Sarri, G., Sartirana, D., Schuy, C., Sgouros, O., Simonucci, S., Sorbello, G., Soukeras, V., Spartá, R., Spatafora, A., Stanoiu, M., Taioli, S., Tessonnier, T., Thirolf, P., Tognelli, E., Torresi, D., Torrisi, G., Trache, L., Traini, G., Trimarchi, M., Tsikata, S., Tumino, A., Tyczkowski, J., Yamaguchi, H., Vercesi, V., Vidana, I., Volpe, L., and Weber, U.

Published
2023
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4. Electromagnetic character of the competitive $\gamma\gamma/\gamma$-decay from $^{137\mathrm{m}}$Ba

Author

Söderström, P. -A., Capponi, L., Açıksöz, E., Otsuka, T., Tsoneva, N., Tsunoda, Y., Balabanski, D. L., Pietralla, N., Guardo, G. L., Lattuada, D., Lenske, H., Matei, C., Nichita, D., Pappalardo, A., and Petruse, T.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Second-order processes in physics is a research topic focusing attention from several fields worldwide including, for example, non-linear quantum electrodynamics with high-power lasers, neutrinoless double-$\beta$ decay, and stimulated atomic two-photon transitions. For the electromagnetic nuclear interaction, the observation of the competitive double-$\gamma$ decay from $^{137\mathrm{m}}$Ba has opened up the nuclear structure field for detailed investigation of second-order processes through the manifestation of off-diagonal nuclear polarizability. Here we confirm this observation with an $8.7\sigma$ significance, and an improved value on the double-photon versus single-photon branching ratio as $2.62\times10^{-6}(30)$. Our results, however, contradict the conclusions from the original experiment, where the decay was interpreted to be dominated by a quadrupole-quadrupole component. Here, we find a substantial enhancement in the energy distribution consistent with a dominating octupole-dipole character and a rather small quadrupole-quadrupole element in the decay, hindered due to an evolution of the internal nuclear structure. The implied strongly hindered double-photon branching in $^{137\mathrm{m}}$Ba opens up the possibility of the double-photon branching as a feasible tool for nuclear-structure studies on off-diagonal polarizability in nuclei where this hindrance is not present., Comment: 12 pages, 5 figures, 2 tabels

Published
2020
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5. Unfolding of sparse high-energy $\gamma$-ray spectra from LaBr$_{3}$:Ce detectors

Author

Söderström, P. -A., Capponi, L., Iancu, V., Lattuada, D., Pappalardo, A., Turturică, G. V., Açıksöz, E., Balabanski, D. L., Constantin, P., Guardo, G. L., Ilie, M., Ilie, S., Matei, C., Nichita, D., Petruse, T., and Spataru, A.

Subjects
Physics - Instrumentation and Detectors
Abstract

Here we report on the characterization of one of the large-volume LaBr$_{3}$:Ce detectors for the ELIGANT project at ELI-NP. The main focus of this work is the response function for high-energy $\gamma$ rays of such detectors. In particular, we compare a selection of unfolding methods to resolve small structures in $\gamma$-ray spectra with high-energies. Three methods have been compared using $\gamma$-ray spectra with energies up to 12 MeV obtained in an experiment at the 3 MV Tandetron\texttrademark\ facility at IFIN-HH. The results show that the iterative unfolding approach gives the best qualitative reproduction of the emitted $\gamma$-ray spectrum. Furthermore, the correlation fluctuations in high-energy regime from the iterative method are two orders of magnitude smaller than when using the matrix inversion approach with second derivative regularization. In addition, the iterative method is computationally faster as it does not contain large matrix inversions. The matrix inversion method does, however, give more consistent results over the full energy range and in the low-statistics limit. Our conclusion is that the performance of the iterative approach makes it well suitable for semi-online analysis of experimental data. These results will be important, both for experiments with the ELIGANT setup, and for on-line diagnostics of the energy spread of the $\gamma$-ray beam which is under implementation at ELI-NP., Comment: 12 pages, 6 figures, 1 table

Published
2019
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6. Impact of 13C Contamination on Neutron Yield Measurement in the 27AI(α, n) Reaction

Author

Roy Rajat, Choudhury D., Testov D. A., Balabanski D. L., Kuşoğlu A., Lorusso G., Söderström P.-A., Aogaki S., Ban S.-R., Brezeanu M., Burducea I., Corbu R., Cuciuc M., Dhal A., Djourelov N., Florea N., Gavrilescu A., Gheorghiu C., Guardo G. L., Iancu D., Lelasseux V., Nedelcu C.V., Pai H., Parlea P., Petruse T., Rotaru A., Singh S., State A.N., Straticiuc M., Toma V., and Tozar T.

Subjects
Physics, QC1-999
Abstract

We have performed the measurement of the 27Al(α, n) cross section at IFIN-HH for a range of energies from 2.5 to 5.2 MeV, using an array of 28 3He counters arranged in 3 concentric rings (ELIGANT-TN). Here we present the experimental setup and discuss the role of the 13C contamination which effects the measurements in the low-energy region. Energy-dispersive X-ray spectroscopy carried out before and after the experiment suggested an increase in the 13C concentration during the experiment.

Published
2024
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7. Determination of the photodisintegration reaction rates involving charged particles: systematical calculations and proposed measurements based on Extreme Light Infrastructure - Nuclear Physics (ELI-NP)

Author

Lan, H. Y., Xu, Y., Luo, W., Balabanski, D. L., Goriely, S., La Cognata, M., Matei, C., Anzalone, A., Chesnevskaya, S., Guardo, G. L., Lattuada, D., Pizzone, R. G., Romano, S., Spitaleri, C., Taffara, A., Tumino, A., and Zhu, Z. C.

Subjects
Nuclear Theory, Astrophysics - Solar and Stellar Astrophysics, Nuclear Experiment
Abstract

Photodisintegration reaction rates involving charged particles are of relevance to the p-process nucleosynthesis that aims at explaining the production of the stable neutron-deficient nuclides heavier than iron. In this study, the cross sections and astrophysical rates of (g,p) and (g,a) reactions for about 3000 target nuclei with 10

Published
2018
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8. Direct measurement of the 19α016cmF(p,19α016cm)19α016cmO reaction at E19α016cm = 0.4–0.9 MeV using the LHASA detector array

Author

Guardo, G. L., Petruse, T., Lattuada, D., La Cognata, M., Balabanski, D. L., Açıksöz, E., Acosta, L., Capponi, L., Carbone, D., Cherubini, S., Choudhury, D., D’Agata, G., Di Pietro, A., Figuera, P., Gulino, M., Kilik, A. I., La Commara, M., Lamia, L., Matei, C., Palmerini, S., Pizzone, R. G., Rapisarda, G. G., Romano, S., Sergi, M. L., Söderström, P.-A., Spartà, R., Tumino, A., and Viñals, S.

Published
2023
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9. Reply to the Comments on the 12C+12C fusion S^*-factor

Author

Tumino, A., Spitaleri, C., La Cognata, M., Cherubini, S., Guardo, G. L., Gulino, M., Hayakawa, S., Indelicato, I., Lamia, L., Petrascu, H., Pizzone, R. G., Puglia, S. M. R., Rapisarda, G. G., Romano, S., Sergi, M. L., Spartá, R., and Trache, L.

Subjects
Nuclear Experiment
Abstract

The goal of this reply is to draw attention of the readers that the major problems rose in the short Comment authored by A.M. Mukhamedzhanov, X. Tang and D.Y. Pang (arXiv:1806.05921) are totally groundless., Comment: 4 pages, 2 figures

Published
2018

10. Trends in particle and nuclei identification techniques in nuclear physics experiments

Author

Badalà, A., La Cognata, M., Nania, R., Osipenko, M., Piantelli, S., Turrisi, R., Barion, L., Capra, S., Carbone, D., Carnesecchi, F., Casula, E. A. R., Chatterjee, C., Ciani, G. F., Depalo, R., Di Nitto, A., Fantini, A., Goasduff, A., Guardo, G. L., Kraan, A. C., Manna, A., Marsicano, L., Martorana, N. S., Morales-Gallegos, L., Naselli, E., Scordo, A., Valdré, S., and Volpe, G.

Published
2022
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11. High precision probe of the fully sequential decay width of the Hoyle state in $^{12}$C

Author

Dell'Aquila, D., Lombardo, I., Verde, G., Vigilante, M., Acosta, L., Agodi, C., Cappuzzello, F., Carbone, D., Cavallaro, M., Cherubini, S., Cvetinovic, A., D'Agata, G., Francalanza, L., Guardo, G. L., Gulino, M., Indelicato, I., La Cognata, M., Lamia, L., Ordine, A., Pizzone, R. G., Puglia, S. M. R., Rapisarda, G. G., Romano, S., Santagati, G., Spartà, R., Spadaccini, G., Spitaleri, C., and Tumino, A.

Subjects
Nuclear Experiment
Abstract

The decay path of the Hoyle state in $^{12}$C ($E_x=7.654\textrm{MeV}$) has been studied with the $^{14}\textrm{N}(\textrm{d},\alpha_2)^{12}\textrm{C}(7.654)$ reaction induced at $10.5\textrm{MeV}$. High resolution invariant mass spectroscopy techniques have allowed to unambiguously disentangle direct and sequential decays of the state passing through the ground state of $^{8}$Be. Thanks to the almost total absence of background and the attained resolution, a fully sequential decay contribution to the width of the state has been observed. The direct decay width is negligible, with an upper limit of $0.043\%$ ($95\%$ C.L.). The precision of this result is about a factor $5$ higher than previous studies. This has significant implications on nuclear structure, as it provides constraints to $3$-$\alpha$ cluster model calculations, where higher precision limits are needed.

Published
2017
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12. Erratum to: Trends in particle and nuclei identification techniques in nuclear physics experiments

Author

Badalà, A., La Cognata, M., Nania, R., Osipenko, M., Piantelli, S., Turrisi, R., Barion, L., Capra, S., Carbone, D., Carnesecchi, F., Casula, E. A. R., Chatterjee, C., Ciani, G. F., Depalo, R., Di Nitto, A., Fantini, A., Goasduff, A., Guardo, G. L., Kraan, A. C., Manna, A., Marsicano, L., Martorana, N. S., Morales-Gallegos, L., Naselli, E., Scordo, A., Valdré, S., and Volpe, G.

Published
2022
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13. ANC experiments for nuclear astrophysics: The 26Si(p, γ)27P case

Author

D’Agata G., Kilic A. I., Burjan V., Mrázek J., Glagolev V., Kroha V., Cassisa A., Guardo G. L., La Cognata M., Lamia L., Palmerini S., Pizzone R. G., Rapisarda G. G., Romano S., Sergi M. L., Spartà R., Spitaleri C., and Tumino A.

Subjects
Physics, QC1-999
Abstract

The Asymptotic Normalization Coefficient (ANC) method has proven to be useful in retrieving the direct part of the radiative capture cross section for a number of reactions of astrophysical interest. In this work, the study of the 26Si(p, γ)27P reaction, studied via the ANC in its extension for mirror nuclei will be discussed.

Published
2023
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14. Radioisotope production using lasers: From basic science to applications.

Author

Rodrigues, M. R. D., Bonasera, A., Scisciò, M., Pérez-Hernández, J. A., Ehret, M., Filippi, F., Andreoli, P. L., Huault, M., Larreur, H., Singappuli, D., Molloy, D., Raffestin, D., Alonzo, M., Rapisarda, G. G., Lattuada, D., Guardo, G. L., Verona, C., Consoli, Fe., Petringa, G., and McNamee, A.

Subjects
GERMANIUM detectors, CHIRPED pulse amplification, RADIOISOTOPES, NUCLEAR reactions, LASERS, POSITRON emission tomography, FEMTOSECOND lasers
Abstract

The discovery of chirped pulse amplification has led to great improvements in laser technology, enabling energetic laser beams to be compressed to pulse durations of tens of femtoseconds and focused to a few micrometers. Protons with energies of tens of MeV can be accelerated using, for instance, target normal sheath acceleration and focused on secondary targets. Under such conditions, nuclear reactions can occur, with the production of radioisotopes suitable for medical application. The use of high-repetition lasers to produce such isotopes is competitive with conventional methods mostly based on accelerators. In this paper, we study the production of 67Cu, 63Zn, 18F, and 11C, which are currently used in positron emission tomography and other applications. At the same time, we study the reactions 10B(p,α)7Be and 70Zn(p,4n)67Ga to put further constraints on the proton distributions at different angles, as well as the reaction 11B(p,α)8Be relevant for energy production. The experiment was performed at the 1 PW laser facility at Vega III in Salamanca, Spain. Angular distributions of radioisotopes in the forward (with respect to the laser direction) and backward directions were measured using a high purity germanium detector. Our results are in reasonable agreement with numerical estimates obtained following the approach of Kimura and Bonasera [Nucl. Instrum. Methods Phys. Res., Sect. A 637, 164–170 (2011)]. [ABSTRACT FROM AUTHOR]

Published
2024
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16. The Cosmologically Relevant He Reaction in View of the Recent THM Investigations

Author

Lamia, L., Spitaleri, C., Mazzocco, M., Hayakawa, S., Bertulani, C. A., Boiano, A., Boiano, C., Broggini, Carlo, Caciolli, Antonio, Depalo, Rosanna, Galtarossa, F., Guardo, G. L., Gulino, M., Kubono, S., La Cognata, M., La Commara, M., La Rana, G., Lattuada, M., Menegazzo, Roberto, Pakou, A., Parascandolo, C., Piatti, D., Pierroutsakou, D., Pizzone, Rosario Gianluca, Romano, S., Rapisarda, G. G., Sergi, M. L., Sgouros, O., Soramel, F., Soukeras, V., Strano, E., Torresi, D., Tumino, Aurora, Yamaguchi, H., Villante, F. L., Zhang, G. L., Formicola, Alba, editor, Junker, Matthias, editor, Gialanella, Lucio, editor, and Imbriani, Gianluca, editor

Published
2019
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17. First Time Measurement of the O Reaction at Astrophysical Energies: Evidence of Resonances Through the Application of the Trojan Horse Method

Author

Becherini, B., La Cognata, M., Palmerini, Sara, Trippella, O., Cherubini, S., Guardo, G. L., Gulino, M., Hayakawa, S., Indelicato, I., Lamia, L., Pizzone, Rosario Gianluca, Rapisarda, G. G., Spitaleri, C., Tumino, Aurora, Formicola, Alba, editor, Junker, Matthias, editor, Gialanella, Lucio, editor, and Imbriani, Gianluca, editor

Published
2019
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18. The Ne Reactions at Energies of Astrophysical Interest via the Trojan Horse Method

Author

D’Agata, G., Pizzone, Rosario Gianluca, Indelicato, I., La Cognata, M., Spitaleri, C., Burjan, V., Cherubini, S., Di Pietro, A., Figuera, P., Guardo, G. L., Gulino, M., La Commara, M., Lamia, L., Lattuada, M., Mazzocco, M., Mrazek, J., Milin, M., Palmerini, Sara, Parascandolo, C., Pierroutsakou, D., Rapisarda, G. G., Romano, S., Sergi, M. L., Soic̀, N., Spartá, R., Trippella, O., Tumino, Aurora, Formicola, Alba, editor, Junker, Matthias, editor, Gialanella, Lucio, editor, and Imbriani, Gianluca, editor

Published
2019
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19. The Resonant Behaviour of the C Fusion Cross Section at Astrophysical Energies

Author

Tumino, Aurora, Spitaleri, C., La Cognata, M., Cherubini, S., Guardo, G. L., Gulino, M., Hayakawa, S., Indelicato, I., Lamia, L., Petrascu, H., Pizzone, Rosario Gianluca, Puglia, S. M. R., Rapisarda, G. G., Romano, S., Sergi, M. L., Spartá, R., Trache, L., Formicola, Alba, editor, Junker, Matthias, editor, Gialanella, Lucio, editor, and Imbriani, Gianluca, editor

Published
2019
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20. Energy density fluctuations in Early Universe

Author

Guardo, G. L., Greco, V., and Ruggieri, M.

Subjects
High Energy Physics - Phenomenology
Abstract

The primordial nucleosinthesys of the element can be influenced by the transitions of phase that take place after the Big Bang, such as the QCD transition. In order to study the effect of this phase transition, in this work we compute the time evolution of thermodynamical quantities of the early universe, focusing on temperature and energy density fluctuations, by solving the relevant equations of motion using as input the lattice QCD equation of state to describe the strongly interacting matter in the early universe plasma. We also study the effect of a primordial strong magnetic field by means of a phenomenological equation of state. Our results show that small inhomogeneities of strongly interacting matter in the early Universe are moderately damped during the crossover., Comment: 4 pages, 2 figures. Talk given at Sventh European Summer School on Experimental Nuclear Astrophysics, 15-27 September 2013, Santa Tecla (CT) - Italy

Published
2014
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21. Impact of 13C Contamination on Neutron Yield Measurement in the 27AI(α, n) Reaction.

Author

Roy, Rajat, Choudhury, D., Testov, D. A., Balabanski, D. L., Kuşoğlu, A., Lorusso, G., Söderström, P.-A., Aogaki, S., Ban, S.-R., Brezeanu, M., Burducea, I., Corbu, R., Cuciuc, M., Dhal, A., Djourelov, N., Florea, N., Gavrilescu, A., Gheorghiu, C., Guardo, G. L., and Iancu, D.

Subjects
NEUTRONS, ENERGY dispersive X-ray spectroscopy, NUCLEAR reactions, NEUTRON flux, NUCLEAR energy
Abstract

We have performed the measurement of the 27Al(α, n) cross section at IFIN-HH for a range of energies from 2.5 to 5.2 MeV, using an array of 28 3He counters arranged in 3 concentric rings (ELIGANT-TN). Here we present the experimental setup and discuss the role of the 13C contamination which effects the measurements in the low-energy region. Energy-dispersive X-ray spectroscopy carried out before and after the experiment suggested an increase in the 13C concentration during the experiment. [ABSTRACT FROM AUTHOR]

Published
2024
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22. The 27Al(p,α)24Mg2H(27Al,α24Mg)n reaction at astrophysical energies studied by means of the Trojan Horse Method applied to the 27Al(p,α)24Mg2H(27Al,α24Mg)n reaction

Author

Palmerini, S., La Cognata, M., Hammache, F., Acosta, L., Alba, R., Burjan, V., Chávez, E., Cherubini, S., Cvetinović, A., D’Agata, G., de Séréville, N., Di Pietro, A., Figuera, P., Fülöp, Z., Gaitán De Los Rios, K., Guardo, G. L., Gulino, M., Hayakawa, S., Kiss, G. G., La Commara, M., Lamia, L., Maiolino, C., Manicó, G., Matei, C., Mazzocco, M., Mrazek, J., Parascandolo, T., Petruse, T., Pierroutsakou, D., Pizzone, R. G., Rapisarda, G. G., Romano, S., Santonocito, D., Sergi, M. L., Spartà, R., Tumino, A., and Yamaguchi, H.

Published
2021
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23. Suppression of the centrifugal barrier effects in the off-energy-shell neutron+$^{17}$O interaction

Author

Gulino, M., Spitaleri, C., Tang, X. D., Guardo, G. L., Lamia, L., Cherubini, S., Bucher, B., Burjan, V., Couder, M., Davies, P., deBoer, R., Fang, X., Goldberg, V. Z., Hons, Z., Kroha, V., Lamm, L., La Cognata, M., Li, C., Ma, C., Mrazek, J., Mukhamedzhanov, A. M., Notani, M., OBrien, S., Pizzone, R. G., Rapisarda, G. G., Roberson, D., Sergi, M. L., Tan, W., Thompson, I. . J., and Wiescher, M.

Subjects
Nuclear Experiment
Abstract

The reaction $^{17}$O($n,\alpha$)$^{14}$C was studied at energies from $E_{cm}=0$ to $E_{cm}=350$ keV using the quasi-free deuteron break-up in the three body reaction $^{17}$O$+d \rightarrow \alpha+ ^{14}$C$+p$, extending the Trojan Horse indirect method (THM) to neutron-induced reactions. It is found that the $^{18}$O excited state at $E^*=8.125 \pm 0.002$ MeV observed in THM experiments is absent in the direct measurement because of its high centrifugal barrier. The angular distributions of the populated resonances have been measured for the first time. The results unambiguously indicate the ability of the THM to overcome the centrifugal barrier suppression effect and to pick out the contribution of the bare nuclear interaction., Comment: Accepted by PRC as Rapid Communication

Published
2012
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25. The 35→ααHe+35→ααHe35→αα35→αα+35→αα reaction below the Coulomb barrier via the Trojan Horse Method

Author

Spitaleri, C., Typel, S., Bertulani, C. A., Mukhamedzhanov, A. M., Kajino, T., Lattuada, M., Cvetinović, A., Messina, S., Guardo, G. L., Soić, N., Milin, M., Perrotta, S. S., Li, Chengbo, Čolović, P., D’Agata, G., Dell’Aquila, D., Fatuzzo, C. G., Gulino, M., Hou, S. Q., Cognata, M. La, Lattuada, D., Nurkić, D., Popočovski, R., Skukan, N., Szilner, S., Trippella, O., Uroić, M., and Vukman, N.

Published
2021
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26. Indirect measurement of the 3He3H(n,p)3He3H reaction cross section at Big Bang energies

Author

Pizzone, R. G., Spampinato, C., Spartá, R., Couder, M., Tan, W., Burjan, V., D’Agata, G., Guardo, G. L., La Cognata, M., Lamia, L., Mrazek, J., Palmerini, S., Typel, S., Tumino, A., Wiescher, M., Anguilar, S., Bardayan, D., Blankstein, D., Boccioli, L., Callahan, L., Cha, S. M., Chae, K. Y., Clark, A. M., Frentz, B., Hall, M. R., Gula, A., Henderson, S., Kelmar, R., Kwag, M. S., Indelicato, I., La Commara, M., Lattuada, D., Liu, Q., Long, J., Mazzocco, M., Majumdar, A., McGuinness, S., Nelson, A., Oliva, A. A., O’Malley, P., Prajapati, P. M., Rapisarda, G. G., Romano, S., Sergi, M. L., Seymour, C., Skulski, M., Spitaleri, C., and Wilkinson, J.

Published
2020
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28. Study of the quasi-free 3He+9Be→3α reaction for the Trojan Horse Method

Author

Spitaleri, C., Lattuada, M., Cvetinović, A., Soić, N., Milin, M., Čolović, P., D’Agata, G., Dell’Aquila, D., Guardo, G. L., Gulino, M., Trippella, O., La Cognata, M., Lamia, L., Lattuada, D., Li, Chengbo, Messina, S., Nurkić, D., Perrotta, S. S., Pizzone, R. G., Popočonski, R., Romano, S., Skukan, N., Spartá, R., Szilner, S., Uroić, M., and Vukman, N.

Published
2020
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30. First Time Measurement of the $$^{19}$$ F(p, $$\alpha _1$$ ) $$^{16}$$ O Reaction at Astrophysical Energies: Evidence of Resonances Through the Application of the Trojan Horse Method

Author

Becherini, B., primary, La Cognata, M., additional, Palmerini, Sara, additional, Trippella, O., additional, Cherubini, S., additional, Guardo, G. L., additional, Gulino, M., additional, Hayakawa, S., additional, Indelicato, I., additional, Lamia, L., additional, Pizzone, Rosario Gianluca, additional, Rapisarda, G. G., additional, Spitaleri, C., additional, and Tumino, Aurora, additional

Published
2019
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31. The Resonant Behaviour of the $$^{12}$$ C+ $$^{12}$$ C Fusion Cross Section at Astrophysical Energies

Author

Tumino, Aurora, primary, Spitaleri, C., additional, La Cognata, M., additional, Cherubini, S., additional, Guardo, G. L., additional, Gulino, M., additional, Hayakawa, S., additional, Indelicato, I., additional, Lamia, L., additional, Petrascu, H., additional, Pizzone, Rosario Gianluca, additional, Puglia, S. M. R., additional, Rapisarda, G. G., additional, Romano, S., additional, Sergi, M. L., additional, Spartá, R., additional, and Trache, L., additional

Published
2019
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32. The $$^{19}\mathrm{F}( \alpha ,\mathrm{p})^{22}$$ Ne and $$^{23}\mathrm{Na}(\mathrm{p},\alpha )^{20}$$ Ne Reactions at Energies of Astrophysical Interest via the Trojan Horse Method

Author

D’Agata, G., primary, Pizzone, Rosario Gianluca, additional, Indelicato, I., additional, La Cognata, M., additional, Spitaleri, C., additional, Burjan, V., additional, Cherubini, S., additional, Di Pietro, A., additional, Figuera, P., additional, Guardo, G. L., additional, Gulino, M., additional, La Commara, M., additional, Lamia, L., additional, Lattuada, M., additional, Mazzocco, M., additional, Mrazek, J., additional, Milin, M., additional, Palmerini, Sara, additional, Parascandolo, C., additional, Pierroutsakou, D., additional, Rapisarda, G. G., additional, Romano, S., additional, Sergi, M. L., additional, Soic̀, N., additional, Spartá, R., additional, Trippella, O., additional, and Tumino, Aurora, additional

Published
2019
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33. The Cosmologically Relevant $$^7$$ Be(n, $$\alpha $$ ) $$^4$$ He Reaction in View of the Recent THM Investigations

Author

Lamia, L., primary, Spitaleri, C., additional, Mazzocco, M., additional, Hayakawa, S., additional, Bertulani, C. A., additional, Boiano, A., additional, Boiano, C., additional, Broggini, Carlo, additional, Caciolli, Antonio, additional, Depalo, Rosanna, additional, Galtarossa, F., additional, Guardo, G. L., additional, Gulino, M., additional, Kubono, S., additional, La Cognata, M., additional, La Commara, M., additional, La Rana, G., additional, Lattuada, M., additional, Menegazzo, Roberto, additional, Pakou, A., additional, Parascandolo, C., additional, Piatti, D., additional, Pierroutsakou, D., additional, Pizzone, Rosario Gianluca, additional, Romano, S., additional, Rapisarda, G. G., additional, Sergi, M. L., additional, Sgouros, O., additional, Soramel, F., additional, Soukeras, V., additional, Strano, E., additional, Torresi, D., additional, Tumino, Aurora, additional, Yamaguchi, H., additional, Villante, F. L., additional, and Zhang, G. L., additional

Published
2019
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37. A New Reaction Rate of the 27Al(p/α)24Mg Reaction Based on Indirect Measurements at Astrophysical Energies and Implications for 27Al Yields of Intermediate-mass Stars

Author

La Cognata, M., primary, Palmerini, S., additional, Adsley, P., additional, Hammache, F., additional, Di Pietro, A., additional, Figuera, P., additional, Dell’Agli, F., additional, Alba, R., additional, Cherubini, S., additional, Guardo, G. L., additional, Gulino, M., additional, Lamia, L., additional, Lattuada, D., additional, Maiolino, C., additional, Oliva, A., additional, Pizzone, R. G., additional, Prajapati, P. M., additional, Rapisarda, G. G., additional, Romano, S., additional, Santonocito, D., additional, Spartá, R., additional, Sergi, M. L., additional, Tumino, A., additional, and Ventura, P., additional

Published
2022
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38. Study of the neutron induced reaction 17O(n,α)14C at astrophysical energies via the Trojan Horse Method

Author

Oliva A. A., Lamia L., Guardo G. L., Spitaleri C., Cherubini S., Cvetinovic A., D’Agata G., de Sereville N., Pietro A. Di, Figuera P., Gulino M, Hammache F, Hayakawa S., Indelicato I., Cognata M. La, Commara M. La, Lattuada D., Lattuada M., Manico G., Mazzocco M., Messina S., Palmerini S., Pizzone R.G., Pumo M.L., Rapisarda G.G., Romano S., Sergi M.L., Soic N., Spartà R., and Tumino A.

Subjects
Physics, QC1-999
Abstract

Neutron induced reactions are fundamental for the nucleosynthesis of elements in the universe. Indeed, to correctly study the reactions involved in the well-known s-process in stars, which produce about half of the elements beyond the iron peak, it is mandatory to know the neutron abundance available in those stars. The 17O(n, a)14C reaction is one of the so-called “neutron poisons” for the pro- cess and it could play an important role in the balance of the neutron abundance. The reaction is therefore investigated in the energy range of astrophysical inter- est between 0 and 350 keV in the center of mass by applying the Trojan Horse Method to the three body reaction 2H(17O, a14C)H.

Published
2020
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39. Preliminary results for the 19F(ρ,α)16O reaction cross section measured at INFN-LNS

Author

Petruse T, Guardo G. L., Cognata M. La, Lattuada D., Spitalieri C., Balabanski D. L., Agiksoz E., Acosta L., Capponi L., Carbone D., Cherubini S., Choudhury D., D’Agata G., Pietro A. Di, Figuera P., Gulino M., Kilik A. I., Commara M. La, Lamia L., Matei C., Palmerini S., Pizzone R. G., Romano S., Soderstrom P.-A., Sparta R., Tumino A., and Onses S. Vinales

Subjects
Physics, QC1-999
Abstract

The 19F(ρ,α)16O reaction is an important fluorine destruction chan- nel in the proton-rich outer layers of asymptotic giant branch (AGB) stars and it might also play a role in hydrogen-deficient post-AGB star nucleosynthesis. At present, theoretical models overproduce F abundances in AGB stars with re-spect to the observed values, thus calling for further investigation of the nuclear reaction rates involved in the production and destruction of fluorine. In the last years, new direct and indirect measurements improved significantly the knowl- edge of 19F(ρ,α)16O cross section at deeply sub-Coulomb energies (below 0.8 MeV). However, those data are larger by a factor of 1.4 with respect the previ- ous data reported in the NACRE compilation in the energy region 0.6-0.8 MeV. Using the Large High resolution Array of Silicons for Astrophysics (LHASA), we performed a new direct measurement of the 19F(ρ,α)16O. The goal of this experiment is to reduce the uncertainties in the nuclear reaction rate of the 19F(ρ,α)16O reaction. Here, experimental details, the calibration procedure and angular distributions are presented.

Published
2020
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40. Erratum to: Trends in particle and nuclei identification techniques in nuclear physics experiments (La Rivista del Nuovo Cimento, (2022), 45, 3, (189-276), 10.1007/s40766-021-00028-5)

Author

Badala A., La Cognata M., Nania R., Osipenko M., Piantelli S., Turrisi R., Barion L., Capra S., Carbone D., Carnesecchi F., Casula E. A. R., Chatterjee C., Ciani G. F., Depalo R., Di Nitto A., Fantini A., Goasduff A., Guardo G. L., Kraan A. C., Manna A., Marsicano L., Martorana N. S., Morales-Gallegos L., Naselli E., Scordo A., Valdre S., Volpe G., Badala, A., La Cognata, M., Nania, R., Osipenko, M., Piantelli, S., Turrisi, R., Barion, L., Capra, S., Carbone, D., Carnesecchi, F., Casula, E. A. R., Chatterjee, C., Ciani, G. F., Depalo, R., Di Nitto, A., Fantini, A., Goasduff, A., Guardo, G. L., Kraan, A. C., Manna, A., Marsicano, L., Martorana, N. S., Morales-Gallegos, L., Naselli, E., Scordo, A., Valdre, S., and Volpe, G.

Abstract

In this article the wrong figure appeared as Fig. 38; the Fig. 38 should have appeared as shown below.

Published
2022

41. ANC experiments for nuclear astrophysics: The 26Si(p, γ)27P case.

Author

D'Agata, G., Kilic, A. I., Burjan, V., Mrázek, J., Glagolev, V., Kroha, V., Cassisa, A., Guardo, G. L., La Cognata, M., Lamia, L., Palmerini, S., Pizzone, R. G., Rapisarda, G. G., Romano, S., Sergi, M. L., Spartà, R., Spitaleri, C., and Tumino, A.

Subjects
NUCLEAR astrophysics, NUCLEAR reactions, NUCLEOSYNTHESIS, NUCLEAR physics, RADIATIVE capture
Abstract

The Asymptotic Normalization Coefficient (ANC) method has proven to be useful in retrieving the direct part of the radiative capture cross section for a number of reactions of astrophysical interest. In this work, the study of the 26Si(p, γ)27P reaction, studied via the ANC in its extension for mirror nuclei will be discussed. [ABSTRACT FROM AUTHOR]

Published
2023
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42. Untitled.

Author

Pizzone, R. G., Guardo, G. L., La Cognata, M., Prajapati, P. M., Suryanarayana, S. V., and Sivarani, T.

Subjects
*NUCLEAR astrophysics, *STELLAR evolution, *NUCLEOSYNTHESIS, *SCIENTIFIC discoveries, *INFORMATION sharing
Published
2024
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44. Neutron-Driven Nucleosynthesis in Stellar Plasma

Author

Spartà, R., primary, La Cognata, M., additional, Guardo, G. L., additional, Palmerini, S., additional, Sergi, M. L., additional, D’Agata, G., additional, Lamia, L., additional, Lattuada, D., additional, Oliva, A. A., additional, Pizzone, R. G., additional, Rapisarda, G. G., additional, Romano, S., additional, and Tumino, A., additional

Published
2022
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45. Feasibility of studying astrophysically important charged-particle emission with the variable energy γ -ray system at the Extreme Light Infrastructure–Nuclear Physics facility

Author

Lan, H. Y., primary, Luo, W., additional, Xu, Y., additional, Balabanski, D. L., additional, Guardo, G. L., additional, La Cognata, M., additional, Lattuada, D., additional, Matei, C., additional, Pizzone, R. G., additional, Rauscher, T., additional, and Zhou, J. L., additional

Published
2022
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46. Trojan Horse Method for n-induced reaction investigations at astrophysical energies

Author

Sergi, M. L., Lamia, L., Rapisarda, G. G., Mazzocco, M., Cherubini, S., D Agata, G., Di Pietro, A., Fernandez-Garcia, J. P., Figuera, P., Fisichella, M., Guardo, G. L., Gulino, M., Hayakawa, S., La Cognata, M., Lattuada, M., Alessandro Alberto Oliva, Palmerini, S., Pizzone, R. G., Puglia, S. M. R., Romano, S., Spartà, R., Spitaleri, C., Torresi, D., and Tumino, A.

Published
2022

47. Exploring the astrophysical energy range of the 27Al(p,α)24Mg reaction: A new recommended reaction rate

Author

La Cognata, M., Palmerini, S., Adsley, P., Hammache, F., Di Pietro, A., Figuera, P., Alba, R., Cherubini, S., Dell'Agli, F., Guardo, G. L., Gulino, M., Lamia, L., Lattuada, D., Maiolino, C., Oliva, A., Pizzone, R. G., Prajapati, P. M., Romano, S., Santonocito, D., Sparta, R., Sergi, M. L., and Tumino, A.

Subjects
Nuclear reaction cross sections, Evolved stars, Nuclear abundances, Physics, QC1-999, Astrophysics::Solar and Stellar Astrophysics, Nuclear astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The 26Al abundance holds a special role in present-day astrophysics, since it is a probe of active nucleosynthesis in the Galaxy and a valuable constraint of Galactic core-collapse supernovae rate. It is estimated through the detection of the 1809-keV γ-line of the daughter 26Mg and from the superabundance of 26Mg in comparison with the most abundant 24Mg isotope in meteorites. Accurate knowledge of the reaction rates involving 26Al, its stable counterpart 27Al and 24Mg is then mandatory. Moreover, these nuclei enter the MgAl cycle playing an important role in the production of Al and Mg isotopes. Recently, high-resolution stellar surveys have shown that the Mg-Al anti-correlation in red giants of globular clusters may hide the existence of multiple stellar populations, and that the relative abundances of Mg isotopes may not show correlation with Al.The common thread running through these astrophysical scenarios is the 27Al(p,α)24Mg reaction, which is the main 27Al destruction channel and directly correlates its abundance with the 24Mg one. Since available reaction rates show an order of magnitude uncertainty owing to the vanishingly small cross section at astrophysical energies, we have applied the Trojan Horse Method to deduce the reaction rate with no need of extrapolation. The indirect measurement made it possible to assess the contribution of the 84-keV resonance and to lower the upper limits on the strength of nearby resonances, with potential important impact for astrophysics. In particular, modifications in the 27Al and 24Mg abundances up to ∼30% are predicted for intermediate mass stars.

Published
2022

48. The 19F(α, p)22Ne and 23Na(p,α)20Ne reaction in AGB nucleosynthesis via THM

Author

D’Agata G., Pizzone R. G., La Cognata M., Indelicato I., Spitaleri C., Burjan V., Cherubini S., Di Pietro A., Guardo G. L., Gulino M., La Commara M., Lamia L., Lattuada M., Mazzocco M., Mrazek J., Milin M., Palmerini S., Parascandolo C., Pierroutsakou D., Rapisarda G.G., Romano S., Sergi M.L., Soić N., Spartá R., Trippella O., and Tumino A.

Subjects
Physics, QC1-999
Abstract

In AGB environment, fluorine and sodium abundances are still matter of debate. About 19F (only stable isotope of fluorine), its abundance in the universe is strictly related to standard and extra-mixing processes taking place inside AGB-stars, that are considered to be the most important sites for its production. Nevertheless the way in which it is destroyed is far from being well understood. On the other hand, 23Na presence in Globular Clusters, along with is well-known anticorrelation with oxygen has made clear that this element must be produced in previous generations stars, and intermediatemass AGB stars are one of the possible candidates for its production. For this reason we studied the 19F(α,p)22Ne and 23Na(p,α)20Ne reactions in the energy range of relevance for astrophysics via the Trojan Horse Method (THM), using the three-body reactions 6Li(19F, p22Ne)d and 23Na(d, pn)20Ne.

Published
2018
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49. Development of the ELISSA array: prototype testing at Laboratori Nazionali del Sud

Author

Guardo G. L., Anzalone A., Balabanski D., Chesnevskaya S., Crucillá W., Filipescu D., Gulino M., La Cognata M., Lattuada D., Matei C., Pizzone R. G., Rapisarda G. G., Romano S., Spitaleri C., Taffara A., Tumino A., and Xu Y.

Subjects
Physics, QC1-999
Abstract

The Extreme Light Infrastructure-Nuclear Physics (ELI-NP) facility, underconstruction in Magurele near Bucharest in Romania, will provide high-intensity andhigh-resolution gamma ray beams that can be used to address hotly debated problems in nuclear astrophysics, such as the accurate measurements of the cross sections of the24Mg(γ,α)20Ne reaction For this purpose, a silicon strip detector array (named ELISSA) will be realized in acommon effort by ELI-NP and Laboratori Nazionali del Sud (INFN-LNS), in order to measure excitation functions and angular distributions over a wide energy and angular range. A prototype of ELISSA was built and tested at INFN-LNS in Catania (Italy) with the support of ELI-NP. In this occasion, we have carried out experiments with alpha sources and with a 11 MeV 7Li beam that show up a very good energy resolution (better than 1%) and very good position resolution, of the order of 1 mm. Moreover, a threshold of 150 keV can be easily achieved with no cooling.

Published
2018
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