Search

Your search keyword '"Schroeder, W. U."' showing total 32 results
Start Over Author "Schroeder, W. U."
32 results on '"Schroeder, W. U."'

1. Surface Boiling - a New Type of Instability of Highly Excited Atomic Nuclei

Author

Tõke, J. and Schröder, W. U.

Subjects
Nuclear Theory
Abstract

The evolution of the nuclear matter density distribution with excitation energy is studied within the framework of a finite-range interacting Fermi gas model and microcanonical thermodynamics in Thomas-Fermi approximation. It is found that with increasing excitation energy, both infinite and finite systems become unstable against infinitesimal matter density fluctuations, albeit in different ways. In modeling, this instability reveals itself via an apparent negative heat capacity of the system and is seen to result in the volume boiling in the case of infinite matter and surface boiling in the case of finite systems. The latter phenomenon of surface boiling is unique to small systems and it appears to provide a natural explanation for the observed saturation-like patterns in what is commonly termed caloric curves and what represents functional dependence of nuclear temperature on the excitation energy., Comment: 17 pages, 4 figures

Published
2012

2. Isoscaling in statistical fragment emission in an extended compound nucleus model

Author

Ye, W., Tõke, J., and Schröder, W. U.

Subjects
Nuclear Theory
Abstract

Based on an extended compound nucleus model, isospin effects in statistical fragment emission from excited nuclear systems are investigated. An experimentally observed scaling behavior of the ratio of isotope yields $Y_i(N,Z)$ from two similar emitting sources with different neutron-to-proton ratios is predicted theoretically, i.e., the relationship of $Y_2/Y_1 \propto exp(\alpha N + \beta Z)$ is demonstrated. The symmetry energy coefficient $C_{sym}$ extracted from the simulation results is $\sim$ 27 MeV which is consistent with realistic theoretical estimates and recent experimental data. The influence of the surface entropy on the isoscaling behavior is discussed in detail. It is found that although the surface entropy increases the numercial values of isoscaling parameters $\alpha$ and $\beta$, it does not affect the isoscaling behavior qualitatively and has only a minor effect on the extracted symmetry energy coefficient., Comment: 10 pages, 6 figures

Published
2008
Full Text
View/download PDF

3. Common Signatures of Statistical Coulomb Fragmentation of Highly Excited Nuclei and Phase Transitions in Confined Microcanonical Systems

Author

Tõke, J., Quinlan, M. J., Pawelczak, I., and Schröder, W. U.

Subjects
Nuclear Theory
Abstract

Characteristic signatures of statistical Coulomb fragmentation of highly excited nuclear systems were analyzed. It was found that in some important aspects, they coincide with perceived signatures of phase transitions in confined hypothetical pseudo-microcanonical systems, thus potentially giving rise to a false interpretation of experimental observations in terms of phase transitions. It is demonstrated that the heat capacity as derived based on experimental observations may show domains of faux negative heat capacity for the same fundamental reason a faux negative heat capacity appears in constrained numerical modeling of phase transitions in excited nuclear matter, the reason being an effective truncation of the microcanonical phase space. Similarly, selected experimental data may exhibit bimodality apparently in accordance with the truncated pseudo-microcanonical (but not the true microcanonical) calculations for confined systems., Comment: 23 pages, 7 figures

Published
2008
Full Text
View/download PDF

4. Retardation of Particle Evaporation from Excited Nuclear Systems Due to Thermal Expansion

Author

Tõke, J., Pieńkowski, L., Houck, M., Schröder, W. U., and Sobotka, L. G.

Subjects
Nuclear Theory
Abstract

Particle evaporation rates from excited nuclear systems at equilibrium matter density are studied within the Harmonic-Interaction Fermi Gas Model (HIFGM) combined with Weisskopf's detailed balance approach. It is found that thermal expansion of a hot nucleus, as described quantitatively by HIFGM, leads to a significant retardation of particle emission, greatly extending the validity of Weisskopf's approach. The decay of such highly excited nuclei is strongly influenced by surface instabilities.

Published
2005
Full Text
View/download PDF

5. Influence of the Coulomb Interaction on the Chemical Equilibrium of Nuclear Systems at Break-Up

Author

Tõke, J., Gawlikowicz, W., and Schröder, W. U.

Subjects
Nuclear Theory
Abstract

The importance of a Coulomb correction to the formalism proposed by Albergo et al. for determining the temperatures of nuclear systems at break-up and the ensities of free nucleon gases is discussed. While the proposed correction has no effect on the temperatures extracted based on double isotope ratios, it becomes non-negligible when such temperatures or densities of free nucleon gases are extracted based on multiplicities of heavier fragments of different atomic numbers.

Published
2000
Full Text
View/download PDF

6. Statistical Interpretation of Joint Multiplicity Distributions of Neutrons and Charged Particles

Author

Toke, J., Agnihotri, D. K., Skulski, W., and Schroeder, W. U.

Subjects
Nuclear Experiment
Abstract

Experimental joint multiplicity distributions of neutrons and charged particles emitted in complex nuclear reactions provide an important test of theoretical models. The method is applied to test three different theoretical models of nuclear multi-fragmentation, two of which fail the test. The measurement of neutrons is decisive in distinguishing between the Berlin and Copenhagen models of nuclear multi-fragmentation and challenges the interpretation of pseudo- Arrhenius plots. Statistical-model evaporation calculations with GEMINI give a good reproduction first and second moments of the experimental multiplicity correlations., Comment: 12 pages, 3 figures Added GEMINI calculations of multiplicity correlations Added brief discussion of how neutron emission is treated in MMMC

Published
1999
Full Text
View/download PDF

7. Probing the Concept of Statistical Independence of Intermediate-Mass Fragment Production in Heavy-Ion Collisions

Author

Skulski, W., Toke, J., and Schroeder, W. U.

Subjects
Nuclear Experiment
Abstract

It is found that the total IMF-transverse-energy (E_t) spectra in multi-IMF events are well represented by synthetic spectra obtained by folding of the single-IMF spectrum. Using the experimental IMF multiplicity distribution, the observed trends in the IMF multiplicity distribution for fixed values of E_t are reproduced. The synthetic distributions show binomial reducibility and Arrhenius-like scaling, similar to that reported in the literature. Similar results are obtained when the above folding-type synthesis is replaced with one based on mixing events with different IMF multiplicities. For statistically independent IMF emission, the observed binomial reducibility and Arrhenius-type scaling are merely reflections of the shape of the single-IMF transverse-energy spectrum. Hence, a valid interpretation of IMF distributions in terms of a particular production scenario has to explain independently the observed shape of the single-IMF E_t spectrum., Comment: 13 pages with 8 figure

Published
1998
Full Text
View/download PDF

8. A New Type of Shape Instability of Hot Nuclei and Prompt Nuclear Fragmentation

Author

Toke, J. and Schroeder, W. U.

Subjects
Nuclear Theory
Abstract

A novel mechanism of prompt nuclear fragmentation is proposed. Assuming micro-canonical or canonical equilibrium, it is shown that a strong enhancement of the accessible phase space volume, due to the diffuceness of the nuclear surface, leads to dynamical instabilities of hot nuclei and to prompt fragmentation. Equations are derived for the transition temperature T_T, for which the thermodynamical surface tension vanishes, as well as for the thermodynamical fissility parameter chi_td., Comment: 11 pages, 2 figures

Published
1998
Full Text
View/download PDF

14. Isospin influence on the decay modes of compound systems produced in the 78,86Kr + 40,48Ca at 10 AMeV

Author

Pirrone S., Politi G., Wieleczko J.P., De Filippo E., Gnoffo B., Russotto P., Trimarchi M., La Commara M., Vigilante M., Ademard G., Amorini F., Auditore L., Beck C., Berceanu I., Bonnet E., Borderie B., Cardella G., Chibihi A., Colonna M., D’Onofrio A., Frankland J. D., Geraci E., Henry E., La Guidara E., Lanzalone G., Lautesse P., Lebhertz D., Le Neindre N., Lombardo I., Mazurek K., Norella S., Pagano A., Pagano E.V., Papa M., Piasecki E., Porto F., Quattrocchi L., Quinlann M., Rizzo F., Schroeder W. U., Spadaccini G., Trifirò A., Toke J., and Verde G.

Subjects
Physics, QC1-999
Abstract

The study of the decay modes competition of the compound systems produced in the collisions 78Kr+40Ca and 86Kr+48Ca at 10AMeV is presented. In particular, the N/Z entrance channel influence on the decay paths of the compound systems, directly connected to the isospin influence, is investigated. The experiment was performed at the INFN Laboratori Nazionali del Sud (LNS) in Catania by using the 4π multi-detector CHIMERA. Charge, mass, angular distributions and kinematical features of the reaction products were studied. The analysis shows some differences in the contribution arising from the various reaction mechanisms for the neutron poor and neutron rich systems. Comparison with theoretical statistical and dynamical models are presented for the two systems. Besides a study of the influence of the energy on the entrance channel is performed for the 78Kr+40Ca reaction, by comparing the results of this experiment to those obtained for the same system at 5.5 AMeV with the INDRA device at GANIL.

Published
2016
Full Text
View/download PDF

15. Decay modes of the systems formed in the reactions 78Kr+40Ca and 86Kr+48Ca

Author

Colonna M., Chbihi A., Cardella G., Borderie B., Bonnet E., Berceanu I., Beck C., Auditore L., Amorini F., Vigilante M., De Filippo E., Ademard G., Wieleczko J.P., Politi G., Pirrone S., La Commara M., D’Onofrio A., Frankland J. D., Geraci E., Henry E., La Guidara E., Lanzalone G., Lautesse P., Lebhertz D., Le Neindre N., Lombardo I., Loria D., Mazurek K., Pagano A., Papa M., Piasecki E., Porto F., Quinlannl M., Rizzo F., Rosato E., Russotto P., Schroeder W. U., Spadaccini G., Trifirò A., Tõke J., Trimarchi M., and Verde G.

Subjects
Physics, QC1-999
Abstract

Preliminary outcome of ISODEC experiment, performed at INFNLNS with the CHIMERA array, are presented. Disintegration path dependence on the entrance-channel N/Z ratios (isospin asymmetries) for the reactions 78Kr+40Ca and 86Kr+48Ca at 10 A·MeV, which give origin to the intermediate systems 118Ba and 134Ba, is being investigated. Staggering effects seem to be present as it was the case of a complementary measurement performed at GANIL at lower energy, i.e. 78,82Kr+40Ca at 5.5 A·MeV.

Published
2012
Full Text
View/download PDF

16. Neutron emission in heavy ion reactions

Author

Hilscher, D., Birkelund, J. R., Hoover, A. D., Schröder, W. U., Wilcke, W. W., Huizenga, J. R., Mignerey, A. C., Wolf, K. L., Breuer, H. F., Viola, V. E., Jr., Ehlers, J., editor, Hepp, K., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Zittartz, J., editor, Beiglböck, W., editor, and von Oertzen, W., editor

Published
1980
Full Text
View/download PDF

18. Influence of neutron enrichment on compound system formation and decay in 78Kr+40Ca and 86Kr+48Ca reactions at 10 AMeV

Author

Pirrone S., Politi G., Lacommara M., Wieleczko J. P., Ademard G., De Filippo E., Vigilante M., Amorini F., Auditore L., Beck C., Berceanu I., Bonnet E., Borderie B., Cardella G., Chbihi A., Colonna M., Frankland J. D., Geraci E., Henry E., La Guidara E., Lanzalone G., Lautesse P., Lebhertz D., Le Neindre N., Lombardo I., Loria D., Mazurek K., Pagano A., Papa M., Piasecki E., Porto F., Quinlann M., Rizzo F., Rosato E., Russotto P., Schroeder W. U., Spadaccini G., Trifirò A., Toke J., Trimarchi M., Verde G., D'ONOFRIO, Antonio, S.Kumar and A.K.Jain, S., Pirrone, G., Politi, LA COMMARA, Marco, J. P., Wieleczko, G., Ademard, E., De Filippo, Vigilante, Mariano, F., Amorini, L., Auditore, C., Beck, I., Berceanu, E., Bonnet, B., Borderie, G., Cardella, A., Chbihi, M., Colonna, A., D’Onofrio, J. D., Frankland, E., Geraci, E., Henry, E., La Guidara, G., Lanzalone, P., Lautesse, D., Lebhertz, N., Leneindre, Lombardo, Ivano, D., Loria, K., Mazurek, A., Pagano, M., Papa, E., Piasecki, F., Porto, M., Quinlannl, F., Rizzo, Rosato, Elio, P., Russotto, W. U., Schroeder, Spadaccini, Giulio, A., Trifirò, J., Tõke, M., Trimarchi, G., Verde, 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 Pluridisciplinaire Hubert Curien (IPHC), 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), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-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 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), 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), 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 Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-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), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Pirrone, S., Politi, G., Lacommara, M., Wieleczko, J. P., Ademard, G., De Filippo, E., Vigilante, M., Amorini, F., Auditore, L., Beck, C., Berceanu, I., Bonnet, E., Borderie, B., Cardella, G., Chbihi, A., Colonna, M., D'Onofrio, Antonio, Frankland, J. D., Geraci, E., Henry, E., La Guidara, E., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Loria, D., Mazurek, K., Pagano, A., Papa, M., Piasecki, E., Porto, F., Quinlann, M., Rizzo, F., Rosato, E., Russotto, P., Schroeder, W. U., Spadaccini, G., Trifirò, A., Toke, J., Trimarchi, M., and Verde, G.

Subjects
nuclear reactions fusion reactions nuclear fission, Nuclear Theory, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, Low and Intermediate energy heavy-ion reactions
Abstract

The de-excitation of medium mass nuclei 118,134Ba produced in fusion process of 78,86Kr on 40,48Ca targets at 10 AMeV is studied, in order to investigate the isospin dependence of the decay modes; the neutron enrichment of the compound nuclei is in fact expected to play an important role on the emission mechanisms, providing crucial information on fundamental nuclear quantities such as level density, fission barrier, viscosity and symmetry energy. The experiment was performed at INFN-LNS with the 4π multidetector for charged particles CHIMERA, used for the first time in this low energy regime, thanks to a suitable Pulse Shape Discrimination method for charge identification applied to the silicon detectors. Preliminary results show a different isotopic composition and relative enrichment for the same Z in the two systems. The yields of the Intermediate Mass Fragments (IMF, 3

Published
2013

19. Isospin influence on the decay modes of systems produced in the 78,86Kr+40,48Ca reactions at 10AMeV

Author

Gnoffo, B., Pirrone, S., Politi, G., Commara, M. La, Wieleczko, J.P., Filippo, E. De, Russotto, P., Vigilante, M., Ademard, G., Amorini, F., Auditore, L., Beck, C., Berceanu, I., Bonnet, Eric, Borderie, B., Cardella, G., Chbihi, A., Colonna, M., D’onofrio, A., Frankland, J.D., Geraci, E., Henry, E., Guidara, E. La, Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Mazurek, K., Pagano, A., Papa, M., Piasecki, E., Porto, F., Quinlann, M., Rizzo, F., Rosato, E., Schroeder, W. U., Spadaccini, G., Trifirò, A., Toke, J., Trimarchi, M., Verde, G., Lion, Michel, 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), 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), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), Université de Strasbourg (UNISTRA)-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)-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), 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 Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2015

23. Isospin influence on the decay modes of compound systems produced in the78,86Kr +40,48Ca at 10 AMeV

Author

Pirrone, S., primary, Politi, G., additional, Wieleczko, J.P., additional, De Filippo, E., additional, Gnoffo, B., additional, Russotto, P., additional, Trimarchi, M., additional, La Commara, M., additional, Vigilante, M., additional, Ademard, G., additional, Amorini, F., additional, Auditore, L., additional, Beck, C., additional, Berceanu, I., additional, Bonnet, E., additional, Borderie, B., additional, Cardella, G., additional, Chibihi, A., additional, Colonna, M., additional, D’Onofrio, A., additional, Frankland, J. D., additional, Geraci, E., additional, Henry, E., additional, La Guidara, E., additional, Lanzalone, G., additional, Lautesse, P., additional, Lebhertz, D., additional, Le Neindre, N., additional, Lombardo, I., additional, Mazurek, K., additional, Norella, S., additional, Pagano, A., additional, Pagano, E.V., additional, Papa, M., additional, Piasecki, E., additional, Porto, F., additional, Quattrocchi, L., additional, Quinlann, M., additional, Rizzo, F., additional, Schroeder, W. U., additional, Spadaccini, G., additional, Trifirò, A., additional, Toke, J., additional, and Verde, G., additional

Published
2016
Full Text
View/download PDF

24. Influenza dell’isospin nelle reazioni 78Kr+40Ca e 86Kr+48Ca a 10 A MeV

Author

La Commara, M., Pirrone, S., Politi, Giuseppe, Wieleczko, J. P., Ademard, G., De Filippo, E., Vigilante, M., Amorini, F., Auditore, Lucrezia, Beck, C., Berceanu, I., Bonnet, E., Borderie, B., Cardella, G., Chbihi, A., Colonna, M., D’Onofrio, A., Frankland, J. D., Geraci, E., Gnoffo, B., Henry, E., La Guidara, E., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Loria, D., Mazurek, K., Pagano, A., Papa, M., Piasecki, E., Porto, F., Quinlan, M., Rizzo, Francesca, Rosato, E., Russotto, P., Schroeder, W. U., Spadaccini, G., Trifirò, A., Toke, J., Trimarchi, M., and Verde, G.

Published
2013

25. Influenza dell'arricchimento neutronico su formazione e decadimento del sistema composto nelle reazioni 78Kr+40Ca and 86Kr+48Ca a 10 AMeV

Author

Pirrone, S., Politi, Giuseppe, La Commara, M., Wieleczko, J. P., Ademard, G., De Filippo, E., Vigilante, M., Amorini, F., Auditore, Lucrezia, Beck, C., Berceanu, I., Bonnet, E., Borderie, B., Cardella, G., Chbihi, A., Colonna, M., D'Onofrio, A., Frankland, J. D., Geraci, E., Henry, E., La Guidara, E., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Loria, D., Mazurek, K., Pagano, A., Papa, M., Piasecki, E., Porto, F., Quinlann, M., Rizzo, Francesca, Rosato, E., Russotto, P., Schroeder, W. U., Spadaccini, G., Trifirò, A., Toke, J., Trimarchi, M., and Verde, G.

Published
2012

26. Studio dell'influenza dell'isospin nelle reazioni 78Kr+40Ca e 86Kr+48Ca a 10 AMeV

Author

Pirrone, S., Politi, G., La Commara, M., Wieleczko, J. P., Ademard, G., De Filippo, E., Vigilante, M., Amorini, F., Auditore, Lucrezia, Beck, C., Berceanu, I., Bonnet, E., Borderie, B., Cardella, G., Chbihi, A., Colonna, M., D'Onofrio, A., Frankland, J. D., Geraci, E., Henry, E., La Guidara, E., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Loria, Dario, Mazurek, K., Pagano, A., Papa, M., Piasecki, E., Porto, F., Quinlann, M., Rizzo, F., Rosato, E., Russotto, P., Schroeder, W. U., Spadaccini, G., Trifiro', Antonio, Toke, J., Trimarchi, Marina, and Verde, G.

Published
2011

27. Dynamic production and statistical emission of intermediate mass fragments from Ca+Sn collisions at 45.5 AMeV

Author

Quinlan, M. J., Pawelczak, I., Singh, H., Toke, J., Schroeder, W. U., Amorini, F., Anzalone, A., Auditore, Lucrezia, Cardella, G., Cavallaro, S., Chatterje, M. B., Filippo, E., Elena Irene Geraci, Grzeszczuk, A., Guazzoni, P., Laguidara, E., Lanzalone, G., Lo Nigro, S., Loria, D., Maiolino, C., Pagano, A., Papa, M., Pirrone, S., Politi, Giuseppe, Porto, F., Francesca Rizzo, Russotto, P., Trifirò, A., Trimarchi, M., Verde, G., Vigilante, M., and Zetta, L.

Published
2010

28. Decay competition in IMF production in the collisions 78Kr+40Ca and 86Kr+48Ca at 10 AMeV

Author

Pirrone, S, primary, Politi, G, additional, Commara, M La, additional, Wieleczko, J P, additional, Filippo, E De, additional, Gnoffo, B, additional, Ademard, G, additional, Vigilante, M, additional, Amorini, F, additional, Auditore, L, additional, Beck, C, additional, Berceanu, I, additional, Bonnet, E, additional, Borderie, B, additional, Cardella, G, additional, Chbihi, A, additional, Colonna, M, additional, D'Onofrio, A, additional, Frankland, J D, additional, Geraci, E, additional, Henry, E, additional, Laguidara, E, additional, Lanzalone, G, additional, Lautesse, P, additional, Lebhertz, D, additional, Neindre, N Le, additional, Lombardo, I, additional, Mazurek, K, additional, Pagano, A, additional, Papa, M, additional, Piasecki, E, additional, Quinlann, M, additional, Rizzo, F, additional, Rosato, E, additional, Russotto, P, additional, Schroeder, W U, additional, Spadaccini, G, additional, Trifirò, A, additional, Toke, J, additional, Trimarchi, M, additional, and Verde, G, additional

Published
2014
Full Text
View/download PDF

29. Influence of neutron enrichment on compound system formation and decay in [sup 78]Kr+[sup 40]Ca and [sup 86]Kr+[sup 48]Ca reactions at 10 AMeV

Author

Pirrone, S., primary, Politi, G., additional, La Commara, M., additional, Wieleczko, J. P., additional, Ademard, G., additional, De Filippo, E., additional, Vigilante, M., additional, Amorini, F., additional, Auditore, L., additional, Beck, C., additional, Berceanu, I., additional, Bonnet, E., additional, Borderie, B., additional, Cardella, G., additional, Chbihi, A., additional, Colonna, M., additional, D'Onofrio, A., additional, Frankland, J. D., additional, Geraci, E., additional, Henry, E., additional, La Guidara, E., additional, Lanzalone, G., additional, Lautesse, P., additional, Lebhertz, D., additional, Le Neindre, N., additional, Lombardo, I., additional, Loria, D., additional, Mazurek, K., additional, Pagano, A., additional, Papa, M., additional, Piasecki, E., additional, Porto, F., additional, Quinlann, M., additional, Rizzo, F., additional, Rosato, E., additional, Russotto, P., additional, Schroeder, W. U., additional, Spadaccini, G., additional, Trifirò, A., additional, Toke, J., additional, Trimarchi, M., additional, and Verde, G., additional

Published
2013
Full Text
View/download PDF

30. Decay modes of the systems formed in the reactions78Kr+40Ca and86Kr+48Ca

Author

La Commara, M., primary, Pirrone, S., additional, Politi, G., additional, Wieleczko, J.P., additional, Ademard, G., additional, De Filippo, E., additional, Vigilante, M., additional, Amorini, F., additional, Auditore, L., additional, Beck, C., additional, Berceanu, I., additional, Bonnet, E., additional, Borderie, B., additional, Cardella, G., additional, Chbihi, A., additional, Colonna, M., additional, D’Onofrio, A., additional, Frankland, J. D., additional, Geraci, E., additional, Henry, E., additional, La Guidara, E., additional, Lanzalone, G., additional, Lautesse, P., additional, Lebhertz, D., additional, Le Neindre, N., additional, Lombardo, I., additional, Loria, D., additional, Mazurek, K., additional, Pagano, A., additional, Papa, M., additional, Piasecki, E., additional, Porto, F., additional, Quinlannl, M., additional, Rizzo, F., additional, Rosato, E., additional, Russotto, P., additional, Schroeder, W. U., additional, Spadaccini, G., additional, Trifirò, A., additional, Tõke, J., additional, Trimarchi, M., additional, and Verde, G., additional

Published
2012
Full Text
View/download PDF

32. Isospin influence on the decay modes of compound systems produced in the $^{78,86}$Kr + $^{40,48}$Ca at 10 AMeV

Author

E. V. Pagano, Maria Colonna, B. Borderie, Jan Toke, P. Lautesse, S. Norella, W. U. Schroeder, E. De Filippo, Ivano Lombardo, J.P. Wieleczko, P. Russotto, B. Gnoffo, E. Geraci, E. Piasecki, A. Chibihi, Giuseppe Verde, Mariano Vigilante, A. Pagano, E. La Guidara, G. Lanzalone, C. Beck, Michele Papa, F. Amorini, S. Pirrone, Marina Trimarchi, K. Mazurek, G. Spadaccini, F. Rizzo, J.D. Frankland, Eric Bonnet, G. Ademard, Antonio D'Onofrio, D. Lebhertz, Lucrezia Auditore, N. Le Neindre, G. Politi, F. Porto, G. Cardella, I. Berceanu, M. La Commara, M. Quinlann, Antonio Trifiro, L. Quattrocchi, E. Henry, 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), 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), 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), 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), 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 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), 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 Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Kawano, T., Pirrone, S., Politi, G., Wieleczko, J. P., De Filippo, E., Gnoffo, B., Russotto, P., Trimarchi, M., La Commara, M., Vigilante, M., Ademard, G., Amorini, F., Auditore, L., Beck, C., Berceanu, I., Bonnet, E., Borderie, B., Cardella, G., Chibihi, A., Colonna, M., D'Onofrio, A., Frankland, J. D., Geraci, E., Henry, E., La Guidara, E., Lanzalone, G., Lautesse, P., Lebhertz, D., Le Neindre, N., Lombardo, I., Mazurek, K., Norella, S., Pagano, A., Pagano, E. V., Papa, M., Piasecki, E., Porto, F., Quattrocchi, L., Quinlann, M., Rizzo, F., Schroeder, W. U., Spadaccini, G., Trifiro, A., Toke, J., and Verde, G.

Subjects
Physics, Compound Nuclei, 010308 nuclear & particles physics, QC1-999, Charge (physics), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Entrance channel, Nuclear physics, Physics and Astronomy (all), Isospin, 0103 physical sciences, Compund Nucleus, Fusion reactions, Neutron, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract

International audience; The study of the decay modes competition of the compound systems produced in thecollisions 78Kr+40Ca and 86Kr+48Ca at 10AMeV is presented. In particular, the N/Z entrance channelinfluence on the decay paths of the compound systems, directly connected to the isospin influence, isinvestigated. The experiment was performed at the INFN Laboratori Nazionali del Sud (LNS) inCatania by using the 4π multi-detector CHIMERA. Charge, mass, angular distributions andkinematical features of the reaction products were studied. The analysis shows some differences in thecontribution arising from the various reaction mechanisms for the neutron poor and neutron richsystems. Comparison with theoretical statistical and dynamical models are presented for the twosystems. Besides a study of the influence of the energy on the entrance channel is performed for the78Kr+40Ca reaction, by comparing the results of this experiment to those obtained for the same systemat 5.5 AMeV with the INDRA device at GANIL.

Published
2015

Catalog

Books, media, physical & digital resources
See catalog results