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1. Statistical multifragmentation of non-spherical expanding sources in central heavy-ion collisions

Author

W. Trautmann, Mariano Vigilante, O. Lopez, A. Chbihi, P. Lautesse, Elio Rosato, Aladin Collaborations Indra, B. Zwieglinski, F. Lavaud, J.D. Frankland, R. Dayras, A. Trzcinski, E. Galichet, W. F. J. Müller, B. Hurst, C. Volant, C. Sfienti, A. Saija, L. Nalpas, R. Bittiger, N. Bellaize, C. Schwarz, D. Guinet, Sylvie Hudan, J. Łukasik, J.L. Charvet, A. S. Botvina, V. D. Toneev, M.L. Begemann-Blaich, A. Le Fèvre, Bernard Borderie, E. Plagnol, R. Legrain, U. Lynen, D. Gourio, F. Bocage, D. Durand, G. Auger, R. Bougault, K. Turzo, B. Tamain, H. Orth, Bertrand Bouriquet, M. Ploszajczak, E. Vient, 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), 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), 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), ALADIN, INDRA, A., Le Fèvre, M., Ploszajczak, V. D., Toneev, G., Auger, M. L., Begemann Blaich, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., Bouriquet, J. L., Charvet, A., Chbihi, R., Dayra, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, B., Hurst, P., Lautesse, F., Lavaud, R., Legrain, O., Lopez, J., Lukasik, U., Lynen, W. F. J., Müller, L., Nalpa, H., Orth, E., Plagnol, Rosato, Elio, A., Saija, C., Schwarz, C., Sfienti, J. C., Steckmeyer, B., Tamain, W., Trautmann, A., Trzcinski, K., Turzo, E., Vient, Vigilante, Mariano, C., Volant, B. Zwieglinski e. A. S., Botvina, 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), 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), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
25.70.Pq, 24.60.-k, 25.75.Ld, Physics, Nuclear reaction, Nuclear and High Energy Physics, 010308 nuclear & particles physics, FOS: Physical sciences, Prolate spheroid, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Relaxation (physics), Beam direction, Heavy ion, Nuclear Experiment (nucl-ex), Atomic physics, Deformation (engineering), Nuclear Experiment, 010306 general physics, Anisotropy
Abstract

We study the anisotropy effects measured with INDRA at GSI in central collisions of Xe+Sn at 50 A.MeV and Au+Au at 60, 80, 100 A.MeV incident energy. The microcanonical multifragmentation model with non-spherical sources is used to simulate an incomplete shape relaxation of the multifragmenting system. This model is employed to interpret observed anisotropic distributions in the fragment size and mean kinetic energy. The data can be well reproduced if an expanding prolate source aligned along the beam direction is assumed. An either non-Hubblean or non-isotropic radial expansion is required to describe the fragment kinetic energies and their anisotropy. The qualitative similarity of the results for the studied reactions suggests that the concept of a longitudinally elongated freeze-out configuration is generally applicable for central collisions of heavy systems. The deformation decreases slightly with increasing beam energy., Comment: 35 pages, 19 figures, submitted to Nuclear Physics A

Published
2004

2. Model-independent tracking of criticality signals in nuclear multifragmentation data

Author

C. Sfienti, R. Bougault, P. Lautesse, A. Saija, H. Orth, J. Marie, C. Schwarz, J.D. Frankland, E. Vient, D. Guinet, M. Pichon, M.F. Rivet, J.L. Charvet, C. Volant, R. Dayras, A. Trzcinski, M. Pârlog, A. Chbihi, M.L. Begemann-Blaich, A. Le Fèvre, D. Durand, Alexis Mignon, R. Legrain, W. Trautmann, Elio Rosato, L. Nalpas, Mariano Vigilante, B. Borderie, J. Lukasik, W. F. J. Müller, E. Galichet, J.P. Wieleczko, R. Roy, K. Turzo, B. Tamain, N. Le Neindre, L. Manduci, A. Van Lauwe, C. Escano-Rodriguez, U. Lynen, R. Bittiger, D. Cussol, O. Lopez, B. Zwieglinski, 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), ALADIN, INDRA, J. D., Frankland, A., Chbihi, A., Mignon, M. L., Begemann Blaich, R., Bittinger, B., Borderie, R., Bougault, J. L., Charvet, D., Cussol, R., Dayra, D., Durand, C., Escano Rodriguez, E., Galichet, D., Guinet, P., Lautesse, A., Le Fèvre, R., Legrain, N., Le Neindre, O., Lopez, J., Lukasik, U., Lynen, L., Manduci, J., Marie, W. F. J., Müller, L., Nalpa, H., Orth, M., Pârlog, M., Pichon, M. F., Rivet, R., Roy, Rosato, Elio, A., Saija, C., Schwarz, C., Sfienti, B., Tamain, W., Trautmann, A., Trczinski, K., Turzó, A., van Lauwe, E., Vient, Vigilante, Mariano, C., Volant, J. P., Wieleczko, B., Zwieglinski, Gesellschaft für Schwerionenforschung mbH (MBH), Gesellschaft für Schwerionenforschung mbH, 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), 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), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Conservatoire National des Arts et Métiers [CNAM] (CNAM), 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), Institute of Nuclear Physics (IFJ-PAN), Institute of Nuclear Physics, National Institute for Physics and Nuclear Engineering (NIPNE), National Institute for Physics and Nuclear Engineering, Dipartimento di Scienze Fisiche e Sezione (INFN), Istituto Nazionale di Fisica Nucleare (INFN)-Università degli studi di Napoli Federico II, Laboratoire de Physique Nucléaire (IPN), Université Laval [Québec] (ULaval), Soltan Institute for Nuclear Studies (SINS), Soltan Institute, 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), 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 Istituto Nazionale di Fisica Nucleare (INFN)-University of Naples Federico II = Università degli studi di Napoli Federico II

Subjects
Nuclear reaction, Nuclear and High Energy Physics, Phase transition, 25.70.Pq, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, order parameter, Nuclear physics, 0103 physical sciences, Statistical physics, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Scaling, Physics, Range (particle radiation), Multifragmentation, 010308 nuclear & particles physics, Fermi energy, Function (mathematics), critical phenomena, Symmetric systems, Criticality, phase transition, Impact parameter, Event (particle physics), Dimensionless quantity
Abstract

We look for signals of criticality in multifragment production in heavy-ion collisions using model-independent universal fluctuations theory. The phenomenon is studied as a function of system size, bombarding energy, and impact parameter in a wide range of INDRA data. For very central collisions (b/b_max

Published
2005

3. Intranuclear cascade+percolation+evaporation model applied to the12C+197Au system at 1 GeV/nucleon

Author

R. Dayras, K. Turzo, C. Schwarz, B. Tamain, W.F.J. Mu¨ller, A. Saija, Bertrand Bouriquet, F. Lavaud, Aladin Collaborations, Sylvie Hudan, Mariano Vigilante, E. Vient, J.L. Charvet, Diane Doré, W. Trautmann, A. Le Fe`vre, E. Plagnol, D. Durand, G. Auger, W. Seidel, E. Galichet, U. Lynen, R. Bougault, P. Lautesse, H. Orth, D. Gourio, Bernard Borderie, D. Guinet, L. Nalpas, B. Zwieglin´ski, C. Volant, Giuseppina Raciti, A. S. Botvina, O. Lopez, Elio Rosato, A. Chbihi, J. Łukasik, J.D. Frankland, G. Imme, M.L. Begemann-Blaich, A. Trzcin´ski, C. Sfienti, R. Bittiger, and J.C. Steckmeyer

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Cascade, Percolation, Evaporation, Nucleon
Abstract

The nucleus-nucleus Lie`ge intranuclear-cascade+percolation+evaporation model has been applied to the 12 C+ 197 Au data measured by the INDRA-ALADIN collaboration at GSI. After the intranuclear cascade stage, the data are better reproduced when using the Statistical Multiframentation Model as afterburner. Further checks of the model are done on data from the EOS and KAOS collaborations.

Published
2004

4. Energy calibration for the INDRA multidetector using recoil protons from scattering

Author

Ph. Buchet, P. Lautesse, D. Guinet, J.L. Laville, J.L. Charvet, D. Doré, A. Chbihi, R. Bougault, W. F. J. Müller, C. Volant, J.D. Frankland, M.L. Begemann-Blaich, A. Le Fèvre, C. Sfienti, L. Nalpas, U. Lynen, B. Zwieglinski, E. Plagnol, A. Saija, F. Lavaud, C. Leduc, H. Orth, W. Trautmann, Ch.O. Bacri, Mariano Vigilante, J. Łukasik, R. Bittiger, Sylvie Hudan, Bernard Borderie, Bertrand Bouriquet, R. Dayras, F. Bocage, J.C. Steckmeyer, D. Gourio, O. Lopez, G. Tǎbǎcaru, C. Schwarz, Elio Rosato, D. Durand, G. Auger, K. Turzo, E. Galichet, E. Vient, B. Tamain, Aladin Collaborations, A. Trzcinski, R. Legrain, B. Hurst, and N. Bellaize

Subjects
Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Scattering, Calibration curve, Nuclear Theory, 01 natural sciences, 7. Clean energy, Spectral line, Nuclear physics, Recoil, Coincident, 0103 physical sciences, Calibration, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Instrumentation
Abstract

An efficient method of energy scale calibration for the CsI(Tl) modules of the INDRA multidetector (rings 6–12) using elastic and inelastic 12C+1H scattering at E(12C)=30MeV per nucleon is presented. Background-free spectra for the binary channels are generated by requiring the coincident detection of the light and heavy ejectiles. The gain parameter of the calibration curve is obtained by fitting the proton total charge spectra to the spectra predicted with Monte-Carlo simulations using tabulated cross section data. The method has been applied in multifragmentation experiments with INDRA at GSI.

Published
2003

5. Transition from participant to spectator fragmentation in Au+Au reactions between 60 A and 150 AMeV

Author

K. ZBIRI, A. LE FEVRE, J. AICHELIN, J. LUKASIK, W. REISDORF, F. GULMINELLI, U. LYNEN, W. F. J. MULLER, H. ORTH, C. SCHWARTZ, C. SFIENTI, W. TRAUTMANN, K. TURZO, B. ZWIEGLI, SKI, J. L. CHARVET, A. CHBIHI, R. DAYRAS, D. DURAND, J. D. FRANKLAND, R. LEGRAIN, N. LE NEINDRE, O. LOPEZ, L. NALPAS, M. PARLOG, E. PLAGNOL, M. F. RIVET, E. VIENT, M. VIGILANTE AND J. P. WIELEZCKO, ROSATO, ELIO, K., Zbiri, A., LE FEVRE, J., Aichelin, J., Lukasik, W., Reisdorf, F., Gulminelli, U., Lynen, W. F. J., Muller, H., Orth, C., Schwartz, C., Sfienti, W., Trautmann, K., Turzo, B., Zwiegli, Ski, J. L., Charvet, A., Chbihi, R., Dayra, D., Durand, J. D., Frankland, R., Legrain, N., LE NEINDRE, O., Lopez, L., Nalpa, M., Parlog, E., Plagnol, M. F., Rivet, Rosato, Elio, E., Vient, and M. VIGILANTE AND J. P., Wielezcko

Published
2007

6. Yield scaling, size hierarchy and fluctuations of observables in fragmentation of excited heavy nuclei

Author

E. Rosato, Mariano Vigilante, J. Moisan, N. Le Neindre, B. Zwieglinski, B. Tamain, O. Lopez, E. Bonnet, C. Sfienti, R. Dayras, J.D. Frankland, J.P. Wieleczko, J. Lukasik, D. Guinet, R. Bougault, A. Trzcinski, A. Chbihi, M. Pârlog, D. Mercier, E. Vient, K. Turzo, C. Schwarz, R. Roy, M. F. Rivet, Aladin Collaborations, W. Trautmann, B. Borderie, F. Gulminelli, A. Le Fèvre, P. Lautesse, E. Galichet, N., Le Neindre, E., Bonnet, J. P., Wieleczko, B., Borderie, F., Gulminelli, M. F., Rivet, R., Bougault, A., Chbihi, R., Dayra, J. D., Frankland, E., Galichet, D., Guinet, P., Lautesse, O., Lopez, J., Lukasik, D., Mercier, J., Moisan, M., Parlog, Rosato, Elio, R., Roy, C., Schwarz, C., Sfienti, B., Tamain, W., Trautmann, A., Trzcinski, K., Turzo, E., Vient, Vigilante, Mariano, B., Zwieglinski, 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), 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), Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Conservatoire National des Arts et Métiers [CNAM] (CNAM), 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), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), Institute of Nuclear Physics IFJ-PAN (INSTITUTE OF NUCLEAR PHYSICS IFJ-PAN), Institute of Nuclear Physics IFJ-PAN, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (INFN, Sezione di Napoli), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de Physique Nucléaire (LABORATOIRE DE PHYSIQUE NUCLEAIRE, UNIV. LAVAL), Université Laval [Québec] (ULaval), Andrzej Soltan Institute for Nuclear Studies (ANDRZEJ SOLTAN INST. FOR NUCLEAR STUDIES), Andrzej Soltan Institute for Nuclear Studies, ALADIN, INDRA, 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), 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), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Université Claude Bernard Lyon 1 (UCBL), and 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)

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Zipf's law, 010308 nuclear & particles physics, FOS: Physical sciences, 25.70.Pq, 24.60.Ky, 24.10.Pa, Observable, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], nucl-ex, 7. Clean energy, 01 natural sciences, Fragment size, Nuclear physics, Fragmentation (mass spectrometry), Excited state, 0103 physical sciences, Incident energy, Nuclear Experiment (nucl-ex), Atomic physics, Nuclear Experiment, 010306 general physics, Scaling
Abstract

Multifragmentation properties measured with INDRA are studied for single sources produced in Xe+Sn reactions in the incident energy range 32-50 A MeV and quasiprojectiles from Au+Au collisions at 80 A MeV. A comparison for both types of sources is presented concerning Fisher scaling, Zipf law, fragment size and fluctuation observables. A Fisher scaling is observed for all the data. The pseudo-critical energies extracted from the Fisher scaling are consistent between Xe+Sn central collisions and Au quasi-projectiles. In the latter case it also corresponds to the energy region at which fluctuations are maximal. The critical energies deduced from the Zipf analysis are higher than those from the Fisher analysis., 30 pages, accepted for publication in Nuclear Physics A, references corrected

Published
2007

7. Source shape determination with directional correlation functions

Author

A. LE FEVRE, C. SCHWARZ, G. AUGER, M. L. BEGEMANN BLAICH, N. BELLAIZE, R. BITTIGER, F. BOCAGE, B. BORDERIE, R. BOUGAULT, B. BOURIQUET, J. L. CHARVET, A. CHBIHI, R. DAYRAS, D. DURAND, J. D. FRANKLAND, E. GALICHET, D. GOURIO, D. GUINET, S. HUDAN, B. HURST, P. LAUTESSE, F. LAVAUD, R. LEGRAIN, O. LOPEZ, J. LUKASIK, U. LYNEN, W. F. J. MLLER, L. NALPAS, H. ORTH, E. PLAGNOL, A. SAIJA, C. SFIENTI, J. C. STECKMEYER, B. TAMAIN, W. TRAUTMANN, A. TRZCINSKI, K. TURZO, E. VIENT, C. VOLANT, B. ZWIEGLINSKI, A. S. BOTVINA, ROSATO, ELIO, VIGILANTE, MARIANO, I.Iori, A.Moroni, A., LE FEVRE, C., Schwarz, G., Auger, M. L., BEGEMANN BLAICH, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., Bouriquet, J. L., Charvet, A., Chbihi, R., Dayra, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, B., Hurst, P., Lautesse, F., Lavaud, R., Legrain, O., Lopez, J., Lukasik, U., Lynen, W. F. J., Mller, L., Nalpa, H., Orth, E., Plagnol, Rosato, Elio, A., Saija, C., Sfienti, J. C., Steckmeyer, B., Tamain, W., Trautmann, A., Trzcinski, K., Turzo, E., Vient, Vigilante, Mariano, C., Volant, and B. ZWIEGLINSKI, A. S. BOTVINA

Published
2003

8. Multiplicity correlations in 12C+197Au

Author

W. TRAUTTMANN, K. TURZO', C. VOLANT, ROSATO, ELIO, VIGILANTE, MARIANO, G.Agnello, A.Pagano, S.Pirrone, W., Trauttmann, K., Turzo', C., Volant, Rosato, Elio, and Vigilante, Mariano

Published
2003

9. Au+Au collisions at 40-150 MeV/nucleon: from peripheral to central, ibidem

Author

J. LUKASIK, W. TRAUTMANN, F. LAVAUD, E. PLAGNOL, G. AUGER, C.H. O. BACRI, M. L. BEGEMAN BLAICH, N. BELLAIZE, R. BITTIGER, F. BOCAGE, B. BORDERIE, R. BOUGAULT, B. BOURIQUET, P.H. BUCHET, J. L. CHARVET, A. CHBIHI, A. DAYRAS, D. DOR, D. DURAND, J. D. FRANKLAND, E. GALICHET, D. GOURIO, D. GUINET, S. HUDAN, B. HURST, P. LAUTESSE, J. L. LAVILLE, C. LEDUC, A. LE FVRE, R. LEGRAIN, O. LOPEZ, U. LYNEN, W. F. J. MUELLER, L. NALPAS, H. ORTH, A. SAIJA, C. SCHWARTZ, C. SFIENTI, J. C. STECKMEYER, G. TABACARU, B. TAMAIN, A. TRCZINSKI, K. TURZO, E. VIENT, C. VOLANT, B. ZWIEGLINSKI, A. S. BOTVINA, ROSATO, ELIO, VIGILANTE, MARIANO, G.Agnello, A.Pagano, S.Pirrone, J., Lukasik, W., Trautmann, F., Lavaud, E., Plagnol, G., Auger, Bacri, C. H. O., M. L., BEGEMAN BLAICH, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., Bouriquet, Buchet, P. H., J. L., Charvet, A., Chbihi, A., Dayra, D., Dor, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, B., Hurst, P., Lautesse, J. L., Laville, C., Leduc, A., LE FVRE, R., Legrain, O., Lopez, U., Lynen, W. F. J., Mueller, L., Nalpa, H., Orth, Rosato, Elio, A., Saija, C., Schwartz, C., Sfienti, J. C., Steckmeyer, G., Tabacaru, B., Tamain, A., Trczinski, K., Turzo, E., Vient, Vigilante, Mariano, C., Volant, and B. ZWIEGLINSKI, A. S. BOTVINA

Abstract

ibidem

Published
2002

10. Spectator fragmentation induced by relativistic 12C projectiles

Author

K. Turzo, G. Auger, C.h. O. Bacri, N. Bellaize, B. Bouriquet, M. L. Begeman Blaich, R. Bittiger, F. Bocage, B. Borderie, R. Bougault, P.h. Buchet, J. L. Charvet, A. Chbihi, A. Dayras, D. Doré, D. Durand, J. D. Frankland, E. Galichet, D. Gourio, D. Guinet, S. Hudan, B. Hurst, G. Immé, H. Orth, P. Lautesse, F. Lavaud, J. L. Laville, C. Leduc, A. Le Fèvre, R. Legrain, O. Lopez, J. F. Lukasik, U. Lynen, W. F. J. Mueller, L. Nalpas, E. Plagnol, G. Raciti, A. Saija, C. Schwartz, W. Seidel, C. Sfienti, J. C. Steckmeyer, G. Tabacaru, B. Tamain, W. Trautmann, A. Trczinski, E. Vient, C. Volant, B. Zwieglinski, ROSATO, ELIO, VIGILANTE, MARIANO, I.Iori, A.Moroni, K., Turzo, G., Auger, Bacri, C. h. O., N., Bellaize, B., Bouriquet, M. L., Begeman Blaich, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, Buchet, P. h., J. L., Charvet, A., Chbihi, A., Dayra, D., Doré, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, B., Hurst, G., Immé, H., Orth, P., Lautesse, F., Lavaud, J. L., Laville, C., Leduc, A., Le Fèvre, R., Legrain, O., Lopez, J. F., Lukasik, U., Lynen, W. F. J., Mueller, L., Nalpa, E., Plagnol, G., Raciti, Rosato, Elio, A., Saija, C., Schwartz, W., Seidel, C., Sfienti, J. C., Steckmeyer, G., Tabacaru, B., Tamain, W., Trautmann, A., Trczinski, E., Vient, Vigilante, Mariano, C., Volant, and B., Zwieglinski

Published
2001

11. Some gross features of non-central heavy ion collisions: first results of the INDRA@GSI campaign

Author

J. Lukasik, A. Botvina, G. Auger, C.h. O. Bacri, M. L. Begeman Blaich, N. Bellaize, R. Bittiger, F. Bocage, B. Borderie, R. Bougault, B. Bouriquet, P.h. Buchet, J. L. Charvet, A. Chbihi, A. Dayras, D. Doré, D. Durand, J. D. Frankland, E. Galichet, D. Gourio, D. Guinet, S. Hudan, B. Hurst, H. Orth, P. Lautesse, F. Lavaud, J. L. Laville, C. Leduc, A. Le Fèvre, R. Legrain, O. Lopez, U. Lynen, W. F. J. Mueller, L. Nalpas, E. Plagnol, A. Saija, C. Schwartz, C. Sfienti, J. C. Steckmeyer, G. Tabacaru, B. Tamain, W. Trautmann, A. Trczinski, K. Turzo, E. Vient, C. Volant, B. Zwieglinski, ROSATO, ELIO, VIGILANTE, MARIANO, I.Iori, A.Moroni, J., Lukasik, A., Botvina, G., Auger, Bacri, C. h. O., M. L., Begeman Blaich, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., Bouriquet, Buchet, P. h., J. L., Charvet, A., Chbihi, A., Dayra, D., Doré, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, B., Hurst, H., Orth, P., Lautesse, F., Lavaud, J. L., Laville, C., Leduc, A., Le Fèvre, R., Legrain, O., Lopez, U., Lynen, W. F. J., Mueller, L., Nalpa, E., Plagnol, Rosato, Elio, A., Saija, C., Schwartz, C., Sfienti, J. C., Steckmeyer, G., Tabacaru, B., Tamain, W., Trautmann, A., Trczinski, K., Turzo, E., Vient, Vigilante, Mariano, C., Volant, and B., Zwieglinski

Published
2001

12. Can we really measure the internal energy of a hot nucleus with a 4π detection array?

Author

E. Genouin Duhamel, E. Vient, J. C. Steckmeyer, G. Auger, C. O. Bacri, N. Bellaize, B. Borderie, R. Bougault, B. Bouriquet, R. Brou, P. Buchet, J. L. Charvet, A. Chbihi, J. Colin, D. Cussol, R. Dayras, A. Demeyer, D. Doré, D. Durand, J. D. Frankland, E. Galichet, E. Gerlic, D. Guinet, S. Hudan, P. Lautesse, F. Lavaud, J. L. Laville, J. F. Lecolley, C. Leduc, R. Legrain, N. Le Neindre, O. Lopez, M. Louvel, A. M. Maskay, L. Nalpas, J. Normand, M. Parlog, P. Pawlowski, J. Péter, E. Plagnol, M. F. Rivet, F. Saint Laurent, G. Tabacaru, B. Tamain, L. Tassan Got, O. Tirel, K. Turzo, C. Volant, J. P. Wielezcko, ROSATO, ELIO, I.Iori, A.Moroni, E., Genouin Duhamel, E., Vient, J. C., Steckmeyer, G., Auger, C. O., Bacri, N., Bellaize, B., Borderie, R., Bougault, B., Bouriquet, R., Brou, P., Buchet, J. L., Charvet, A., Chbihi, J., Colin, D., Cussol, R., Dayra, A., Demeyer, D., Doré, D., Durand, J. D., Frankland, E., Galichet, E., Gerlic, D., Guinet, S., Hudan, P., Lautesse, F., Lavaud, J. L., Laville, J. F., Lecolley, C., Leduc, R., Legrain, N., Le Neindre, O., Lopez, M., Louvel, A. M., Maskay, L., Nalpa, J., Normand, M., Parlog, P., Pawlowski, J., Péter, E., Plagnol, M. F., Rivet, Rosato, Elio, F., Saint Laurent, G., Tabacaru, B., Tamain, L., Tassan Got, O., Tirel, K., Turzo, C., Volant, and J. P., Wielezcko

Published
2001

13. Multifragmentation and radial flow in Au+Au central collisions between 40 and 100 MeV/A

Author

F. Lavaud, E. Plagnol, G. Auger, C.h. O. Bacri, M. L. Begeman Blaich, N. Bellaize, R. Bittiger, F. Bocage, B. Borderie, R. Bougault, B. Bouriquet, P.h. Buchet, J. L. Charvet, A. Chbihi, A. Dayras, D. Doré, D. Durand, J. D. Frankland, E. Galichet, D. Gourio, D. Guinet, S. Hudan, B. Hurst, H. Orth, P. Lautesse, J. L. Laville, C. Leduc, A. Le Fèvre, R. Legrain, O. Lopez, J. F. Lukasik, U. Lynen, W. J. Mueller, L. Nalpas, A. Saja, C. Schwartz, C. Sfienti, J. C. Steckmeyer, G. Tabacaru, B. Tamain, W. Trautmann, A. Trczinski, K. Turzo, E. Vient, C. Volant, B. Zwieglinski, ROSATO, ELIO, VIGILANTE, MARIANO, I.Iori, A.Moroni, F., Lavaud, E., Plagnol, G., Auger, Bacri, C. h. O., M. L., Begeman Blaich, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., Bouriquet, Buchet, P. h., J. L., Charvet, A., Chbihi, A., Dayra, D., Doré, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, B., Hurst, H., Orth, P., Lautesse, J. L., Laville, C., Leduc, A., Le Fèvre, R., Legrain, O., Lopez, J. F., Lukasik, U., Lynen, W. J., Mueller, L., Nalpa, Rosato, Elio, A., Saja, C., Schwartz, C., Sfienti, J. C., Steckmeyer, G., Tabacaru, B., Tamain, W., Trautmann, A., Trczinski, K., Turzo, E., Vient, Vigilante, Mariano, C., Volant, and B., Zwieglinski

Published
2001

14. INDRA@GSI. A study of the reaction mechanisms of colliding nuclei for a wide range of energy and mass

Author

K. TURZO', G. AUGER, M. L. BEGEMANN BLAICH, N. BELLAIZE, R. BITTIGER, F. BOCAGE, B. BORDERIE, R. BOUGAULT, B. BOURI QUET, J. L. CHARVET, A. CHBIHI, R. DAYRAS, D. DURAND, J. D. FRANKLAND, E. GALICHET, D. GOURIO, D. GUINET, S. HUDAN, G. IMM, P. LAUTESSE, F. LAVAUD, A. LE FVRE, R. LEGRAIN, O. LOPEZ, J. LUKASIK, U. LYNEN, W. F. J. MLLER, L. NALPAS, H. ORTH, E. PLAGNOL, G. RACITI, A. SAIJA, C. SCHWARZ, W. SEIDEL, C. SFIENTI, B. TAMAIN, W. TRAUTTMANN, A. TRZCINSKI, E. VIENT, VIGILANTE, MARIANO, C. VOLANT, B. ZWIEGLINSKI E. A. S. BOTVINA, ROSATO, ELIO, K., Turzo', G., Auger, M. L., BEGEMANN BLAICH, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., BOURI QUET, J. L., Charvet, A., Chbihi, R., Dayra, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, G., Imm, P., Lautesse, F., Lavaud, A., LE FVRE, R., Legrain, O., Lopez, J., Lukasik, U., Lynen, W. F. J., Mller, L., Nalpa, H., Orth, E., Plagnol, G., Raciti, Rosato, Elio, A., Saija, C., Schwarz, W., Seidel, C., Sfienti, B., Tamain, W., Trauttmann, A., Trzcinski, E., Vient, Vigilante, Mariano, C., Volant, and B. ZWIEGLINSKI E. A. S., Botvina

Published
2000

15. Bimodality - a general feature of heavy ion reactions

Author

J.D. Frankland, A. Chbihi, C. Sfienti, A. Le Fèvre, H. Orth, K. Turzo, Christoph Hartnack, Mariano Vigilante, J. Lukasik, Jörg Aichelin, B. Zwieglinski, W. F. Mueller, C. Schwarz, W. Trautmann, J.P. Wieleczko, Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Helmholtz zentrum für Schwerionenforschung GmbH (GSI), H. Niewodniczanski Institute of Nuclear Physics, Polska Akademia Nauk = Polish Academy of Sciences (PAN), A. Soltan Institute for Nuclear Studies, 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), Dipartimento di Scienze Fisiche [Naples], University of Naples Federico II = Università degli studi di Napoli Federico II, ALADIN, INDRA, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), 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 Università degli studi di Napoli Federico II

Subjects
Physics, Nuclear and High Energy Physics, Photon, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 010308 nuclear & particles physics, 24.10.Lx, 24.60.Lz, 25.70.Pq, Monte Carlo method, FOS: Physical sciences, 01 natural sciences, Charged particle, Bimodality, Nuclear physics, Nuclear Theory (nucl-th), Transverse plane, 0103 physical sciences, Production (computer science), Impact parameter, Atomic physics, 010306 general physics, Nuclear Experiment, Beam (structure)
Abstract

Recently, is has been observed that events with the {\it same} total transverse energy of light charged particles (LCP) in the quasi target region, $E_{\perp 12}^{QT}$, show two quite distinct reaction scenarios in the projectile domain: multifragmentation and residue production. This phenomenon has been dubbed "bimodality". Using Quantum Molecular Dynamics calculations we demonstrate that this observation is very general. It appears in collisions of all symmetric systems larger than Ca and at beam energies between 50 A.MeV and 600 A.MeV and is due to large fluctuations of the impact parameter for a given $E_{\perp 12}^{QT}$. Investigating in detail the $E_{\perp 12}^{QT}$ bin in which both scenarios are present, we find that neither the average fragment momenta nor the average transverse and longitudinal energies of fragments show the behavior expected from a system in statistical equilibrium, in experiment as well as in QMD simulations. On the contrary, the experimental as well as the theoretical results point towards a fast process. This observation questions the conjecture that the observed bimodality is due to the coexistence of 2 phases at a given temperature in finite systems., Comment: accepted PRC

Published
2009
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16. New sub-μs isomers in125,127,129Snand isomer systematics of124−130Sn

Author

A. Maj, G. Rusev, Dirk Rudolph, Claes Fahlander, T. Saitoh, L. Atanasova, J. Grebosz, E. Werner-Malento, A. Saltarelli, H. J. Wollersheim, M. Ionescu-Bujor, Robert Hoischen, J. A. Pinston, S. Pietri, P. Detistov, G. Ilie, J. Walker, M. Górska, K. A. Gladnishki, P. Doornenbal, G. Benzoni, Piotr Bednarczyk, Ronald Schwengner, J. J. Valiente-Dobón, O. Perru, D. L. Balabanski, Stanislav Tashenov, G. Lo Bianco, R. Lozeva, E. Farnea, M. Pfuetzner, F. Camera, A. Blazhev, A. Bracco, M. De Rydt, D. Montanari, S. Lakshmi, Georgi P. Georgiev, O. Wieland, N. Blasi, K. Turzo, C. Brandau, F. C. L. Crespi, N. Vermeulen, H. Grawe, N. Kurz, Zs. Podolyák, J. Gerl, L. Caceres, Gerda Neyens, S. Mallion, W. Prokopowicz, J. M. Daugas, I. Kojouharov, G. S. Simpson, F. Becker, S. K. Chamoli, M. Kmiecik, D. Bazzacco, A. Iordachescu, A. Jungclaus, J. Jolie, M. Hass, and H. Schaffner

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Fission, Yrast, Hadron, 01 natural sciences, Crystallography, Uranium-238, 0103 physical sciences, Isotopes of tin, Isotopes of xenon, Atomic physics, 010306 general physics, Nucleon
Abstract

New sub-mu s isomers have been observed in the neutron-rich Sn isotopes. Sn-125,Sn-127,Sn-129 nuclei have been produced in a relativistic fission reaction of U-238 on a Be-9 target at 750 A.MeV and by the fragmentation of Xe-136 at 600 A.MeV populating high-spin yrast states. In addition to the already known mu s isomers, three new ones with sub-mu s half-lives have been observed. These yrast isomers are the high-spin members of the nu(d(3/2)(-1)h(11/2)(-2)) and nu h(11/2)(-n), seniority v = 3 multiplets leading to isomeric (23/2(+)) and (27/2(-)) states, respectively. Added to the already known 19/2(+)mu s isomers in this region the current work completes the systematic information of neutron-hole excitations toward the filling of the last h(11/2) orbital at N = 82. The results are discussed in the framework of state-of-the-art shell-model calculations using realistic interactions.

Published
2008

17. Transition from participant to spectator fragmentation in Au+Au reactions between60Aand150AMeV

Author

M.F. Rivet, O. Lopez, C. Volant, C. Sfienti, D. Durand, N. Le Neindre, A. Chbihi, Francesca Gulminelli, C. Schwarz, Elio Rosato, U. Lynen, K. Zbiri, L. Nalpas, K. Turzo, E. Vient, W. Trautmann, J.L. Charvet, J.D. Frankland, B. Zwieglinski, R. Legrain, Jörg Aichelin, A. Le Fèvre, J. Łukasik, H. Orth, E. Plagnol, Mariano Vigilante, R. Dayras, M. Parlog, W. F. J. Müller, J.P. Wieleczko, and W. Reisdorf

Subjects
Physics, Nuclear and High Energy Physics, Phase transition, Particle properties, 010308 nuclear & particles physics, Monte Carlo method, 01 natural sciences, Quantum molecular dynamics, Spectral line, Bimodality, Nuclear physics, Fragmentation (mass spectrometry), 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Nuclear theory
Abstract

Using the quantum molecular dynamics approach, we analyzed the results of the recent INDRA Collaboration Au+Au experiments at GSI in the energy range between 60A and 150A MeV. It turns out that in this energy region, the transition toward a participant-spectator scenario takes place. The large Au+Au system displays, in the simulations as in the experiment, simultaneously dynamical and statistical behavior, which we analyze in detail. The composition of fragments close to midrapidity follows statistical laws, and the system shows bimodality, i.e., a sudden transition between different fragmentation patterns, as a function of centrality, as expected for a phase transition. The fragment spectra at small and large rapidities, on the other hand, are determined by dynamics, and the system as a whole does not come to equilibrium--an observation that is confirmed by FOPI Collaboration experiments for the same system.

Published
2007

18. RARE ISOTOPES INVESTIGATIONS AT GSI (RISING) USING RELATIVISTIC ION BEAMS

Author

J. JOLIE, G. ILIE, P. REITER, A. RICHARD, A. SCHERILLO, T. STRIEPLING, N. WARR, A. BANU, F. BECKER, P. BEDNARCZYK, P. DOORNENBAL, J. GERL, H. GRAWE, M. GÓRSKA, I. KOJOUHAROV, S. MANDAL, N. SAITO, T. R. SAITO, H. -J. WOLLERSHEIM, S. MALLION, G. NEYENS, K. TURZO, P. VAN DUPPEN, N. VERMEULEN, ZS. PODOLYAK, W. GELLETLY, P. H. REGAN, P. M. WALKER, W. N. CATFORD, Z. LIU, S. WILLIAMS, A. BLAZHEV, R. LOZEVA, P. DETISTOV, L. ATANASOVA, G. DAMYANOVA, D. CORTINA GIL, J. BENLLIURE, T. KURTUKIAN NIETO, E. CASEREJOS, J. M. DAUGAS, G. BELIER, V. MEOT, O. ROIG, G. SIMPSON, I. S. TSEKHANOVICH, I. MATEA, R. SCHWENGNER, M. HASS, B. S. NARA SINGH, S. K. CHAMOLI, G. GOLDRING, I. REGEV, S. VAINTRAUB, D. L. BALABANSKI, G. LO BIANCO, K. GLADNISHKI, A. SALTARELLI, C. PETRACHE, G. BENZONI, N. BLASI, A. BRACCO, F. CAMERA, B. MILLION, S. LEONI, O. WIELAND, A. MAJ, M. KMIECIK, J. GREBOSZ, J. STYCZEŃ, M. LACH, W. MĘCZYŃSKI, K. MAZUREK, M. PFŰTZNER, A. KORGUL, M. IONESCU-BUJOR, A. IORDACHESCU, V. ZAMFIR, A. JUNGCLAUS, G. GEORGIEV, D. M. CULLEN, S. J. FREEMAN, A. G. SMITH, R. ORLANDI, R. M. CLARK, M. A. BENTLEY, G. HAMMOND, R. WADSWORTH, A. BŰRGER, H. HÜBEL, D. RUDOLPH, C. FAHLANDER, J. SIMPSON, R. D. HERZBERG, R. D. PAGE, P. NOLAN, T. DAVIDSON, P. WOODS, A. M. BRUCE, T. FAESTERMANN, R. KRŰCKEN, H. MACH, B. RUBIO, and A. ALGORA

Subjects
History, Humanities, Cartography
Abstract

Jolie, J. Ilie, G. Reiter, P. Richard, A. Scherillo, A. Striepling, T. Warr, N. Banu, A. Becker, F. Bednarczyk, P. Doornenbal, P. Gerl, J. Grawe, H. Gorska, M. Kojouharov, I. Mandal, S. Saito, N. Saito, T. R. Wollersheim, H. -J. Mallion, S. Neyens, G. Turzo, K. Van Duppen, P. Vermeulen, N. Podolyak, Zs. Gelletly, W. Regan, P. H. Walker, P. M. Catford, W. N. Liu, Z. Williams, S. Blazhev, A. Lozeva, R. Detistov, P. Atanasova, L. Damyanova, G. Gil, D. Cortina Benlliure, J. Kurtukian Nieto, T. Caserejos, E. Daugas, J. M. Belier, G. Meot, V. Roig, O. Simpson, G. Tsekhanovich, I. S. Matea, I. Schwengner, R. Hass, M. Singh, B. S. Nara Chamoli, S. K. Goldring, G. Regev, I. Vaintraub, S. Balabanski, D. L. Lo Bianco, G. Gladnishki, K. Saltarelli, A. Petrache, C. Benzoni, G. Blasi, N. Bracco, A. Camera, F. Million, B. Leoni, S. Wieland, O. Maj, A. Kmiecik, M. Grebosz, J. Bednarczyk, P. Styczen, J. Lach, M. Meczynski, W. Mazurek, K. Pfutzner, M. Korgul, A. Ionescu-Bujor, M. Iordachescu, A. Zamfir, V. Jungclaus, A. Georgiev, G. Cullen, D. M. Freeman, S. J. Smith, A. G. Orlandi, R. Clark, R. M. Bentley, M. A. Hammond, G. Wadsworth, R. Buerger, A. Huebel, H. Rudolph, D. Fahlander, C. Simpson, J. Herzberg, R. D. Page, R. D. Nolan, P. Davidson, T. Woods, P. Bruce, A. M. Faestermann, T. Kruecken, R. Mach, H. Rubio, B. Algora, A.

Published
2006

19. INDRA@GSI: collective flow in Au+Au collisions

Author

F. Lavaud, O. Lopez, Elio Rosato, K. Turzo, A. Saija, R. Bittiger, Bertrand Bouriquet, Aladin Collaborations, R. Bougault, Sylvie Hudan, B. Tamain, J.L. Charvet, P. Lautesse, H. Orth, W. Trautmann, U. Lynen, C. Sfienti, D. Durand, G. Auger, A. Trzcinski, E. Vient, C. Schwarz, A. Chbihi, B. Zwieglinski, D. Guinet, N. Bellaize, Bernard Borderie, E. Plagnol, D. Gourio, J.D. Frankland, L. Nalpas, M.L. Begemann-Blaich, A. Le Fèvre, F. Bocage, R. Legrain, J. Łukasik, B. Hurst, C. Volant, R. Dayras, E. Galichet, Mariano Vigilante, W. F. J. Müller, J.C. Steckmeyer, 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), 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 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), ALADIN, INDRA, 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), 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)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Excitation function, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Nuclear Theory, Elliptic flow, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Sideward and elliptic flow, Intermediate energy heavy ion collisions, Nuclear physics, Flow (mathematics), 0103 physical sciences, Physics::Accelerator Physics, Heavy ion, Atomic physics, Nuclear Experiment, 010306 general physics, Energy (signal processing)
Abstract

Directed flow in symmetric heavy ion collisions has been studied using the 197Au+ 197Au reactions at incident energies between 40 and 150 A MeV. The reactions have been measured with the 4π multi-detector INDRA at the GSI facility. In particular, the bombarding energy at which the elliptic flow switches from in-plane to out-of-plane enhancement has been determined to be clearly above 100 A MeV in good agreement with the result obtained by the FOPI Collaboration. The new data also allows to extend the experimental excitation function of v2 to lower energies.

Published
2003

20. Transverse velocity scaling in197Au+197Aufragmentation

Author

D. Doré, J.L. Laville, B. Borderie, C. Volant, F. Bocage, E. Vient, P. Lautesse, K. Turzo, Elio Rosato, O. Lopez, Ph. Buchet, Bertrand Bouriquet, B. Tamain, M.L. Begemann-Blaich, A. Le Fèvre, C. Schwarz, C. Sfienti, D. Guinet, A. S. Botvina, R. Legrain, L. Nalpas, R. Bougault, J. Łukasik, R. Bittiger, F. Lavaud, J.L. Charvet, W. F. J. Müller, A. Trzcinski, E. Galichet, A. Chbihi, B. Zwieglinski, B. Hurst, W. Trautmann, J.C. Steckmeyer, J.D. Frankland, Gerard Auger, N. Bellaize, D. Durand, A. Saija, Sylvie Hudan, D. Gourio, U. Lynen, C. Leduc, Ch.O. Bacri, E. Plagnol, Mariano Vigilante, R. Dayras, G. Tǎbǎcaru, and H. Orth

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Projectile, Invariant (physics), 01 natural sciences, Spectral line, Nuclear physics, Transverse velocity, 0103 physical sciences, Incident energy, Atomic number, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Scaling
Abstract

Invariant transverse-velocity spectra of intermediate-mass fragments were measured with the 4-pi multi-detector system INDRA for collisions of Au on Au at incident energies between 40 and 150 MeV per nucleon. Their scaling properties as a function of incident energy and atomic number Z are used to distinguish and characterize the emissions in (i) peripheral collisions at the projectile and target rapidities, and in (ii) central and (iii) peripheral collisions near mid-rapidity. The importance of dynamical effects is evident in all three cases and their origin is discussed.

Published
2002

21. Transverse velocity scaling in Au+Au midrapidity emissions

Author

B. Zwieglinski, L. Nalpas, R. Legrain, P. Lautesse, C. Leduc, Ch.O. Bacri, C. Sfienti, D. Gourio, Elio Rosato, R. Bougault, Bertrand Bouriquet, F. Lavaud, A. Saija, C. Volant, J.L. Laville, W. Trautmann, Sylvie Hudan, M.L. Begemann-Blaich, Gerard Auger, D. Durand, U. Lynen, N. Bellaize, E. Vient, E. Plagnol, J.L. Charvet, Mariano Vigilante, B. Borderie, A. S. Botvina, F. Bocage, R. Dayras, G. Tǎbǎcaru, Aladin Collaborations, J.C. Steckmeyer, C. Schwarz, Diane Doré, H. Orth, J.D. Frankland, J. Łukasik, B. Hurst, E. Galichet, W. F. J. Müller, K. Turzo, B. Tamain, A. Trzcinski, A. Chbihi, A. Le Fèvre, O. Lopez, R. Bittiger, Ph. Buchet, and D. Guinet

Subjects
Nuclear physics, Physics, Transverse plane, Range (particle radiation), Photon, Projectile, Observable, Atomic physics, Impact parameter, Nuclear Experiment, Scaling, Charged particle
Abstract

The emission of intermediate-mass fragments in collisions of 197Au on 197Au was systematically studied over the range of incident energies from 40 to 150 A MeV using the 4π-multidetector INDRA and beams from the heavy-ion synchrotron SIS at GSI Darmstadt. The analysis was performed as a function of incident energy and of impact parameter, defined through the total transverse energy of light charged particles (Etrans 12, Z⩽2). This observable was found to scale linearly with the collision energy up to a certain limit above which it saturates. Strong forward-backward asymmetries in the emission pattern with respect to the rapidities of the projectile and target residua were observed. Their possible relation to equilibration is discussed and interpreted in the framework of molecular dynamics and statistical multifragmentation models. Transverse velocities at midrapidity for peripheral collisions were found to show a surprisingly weak dependence on the incident energy. On the contrary, transverse velocities a...

Published
2002

22. Can we really measure the internal energy of hot nuclei with a 4$\pi$ detection array ?

Author

P. Lautesse, A. Buta, J.C. Steckmeyer, E. Genouin-Duhamel, B. Guiot, A. Demeyer, Piotr Pawłowski, J.P. Wieleczko, E. Galichet, J. Normand, D. Durand, G. Auger, L. Nalpas, D. Guinet, A. Chbihi, J.L. Charvet, E. Plagnol, O. Lopez, J.D. Frankland, Bernard Borderie, Elio Rosato, J.L. Laville, J.F. Lecolley, J. Colin, D. Doré, M.F. Rivet, F. Lavaud, M. Pârlog, G. Tabacaru, C.O. Bacri, C. Volant, K. Turzo, R. Bougault, B. Tamain, M. Louvel, B. Bouriquet, R. Legrain, Sylvie Hudan, D. Cussol, L. Tassan-Got, N. Bellaize, N. Le Neindre, E. Gerlic, R. Dayras, E. Vient, 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), 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 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), INDRA, Normandie Université (NU)-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 Claude Bernard Lyon 1 (UCBL), and 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)

Subjects
Physics, Nuclear and High Energy Physics, Equation of state, Range (particle radiation), Excitation energy, Internal energy, 010308 nuclear & particles physics, Measure (physics), Fermi energy, 25.70.-z, 25.70.Lm, 25.70.Mn, Calorimetry, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear matter, 01 natural sciences, Heavy ions, Nuclear physics, 0103 physical sciences, 4π detection array, Hot nuclear matter, Nuclear Experiment, 010306 general physics, Excitation, Energy (signal processing), Caloric curve, Nuclear Physics
Abstract

Matière Nucléaire; International audience; The second generation of high-quality detection arrays gave hope to nuclear physicists to finally obtain an experimental equation of state of nuclear matter. In spite of this progress, the measurement of the internal energy of a hot nucleus remains a very difficult task. This paper illustrates this difficulty by a methodological study of a classical technique of excitation energy measurement used in the Fermi energy range. The aim of this study is to verify the validity, the accuracy and the experimental limits of these measurements. It is shown that it is difficult to have a real experimental mastery of the source reconstruction and calorimetry at least for limited bombarding energies and violent collisions.

Published
2002

23. Surface Modification of Titanium Dental Implants by Excimer Laser

Author

M. Radnai, M. Bereznai, I. Pelseczi, Z. Toth, K. Turzo, Z. Bor, and A. Fazekas

Abstract

The perfect osseointegration process of the dental implants depends among other factors on the surfact characteristics of the titanium. In this study enlarged mechanical roughness was produced by a laser-based technique, in order to decrease the healing period of the implant. There are different ways of forming laser induced surface structures. In the case of mask projection techniques the surface can be modified in larger areas and surface patterns. An ArF nanosecond excimer laser was used in the experiments because of the advantageous properties of the excimer beams. Effective polishing by homogeneous laser illumination in the 3-5 J/cm2 fluence range was performed as confirmed by SEM and AFM studies. Holes of about 20 mm diameter and 10 mm in depth, with high aspect ratio and protrusions around the edges were ablated into the titanium surface with subsequent pulses of ns ArF excimer laser. To avoid easily breakable protrusions we applied excimer pulse durations of 0.5 picoseconds. In this case we obtained melting- and ridge-free ablation of titanium. The laser treatment influenced the chemical composition of the surface in two respects. On the one hand it removed carbonaceous contamination as indicated by XPS and XRD measurements, demonstrating that cleaning of the surface does not alter the original crystalline structure. On the other hand, XPS measurements proved that pulsed laser oxidation in air increased the thickness of the surface oxide layer, promoting better osseointegration.

Published
2002

24. Nuclear multifragmentation and the onset of radial flow: a study of Au+Au collisions between 40 and 100 MeV/A

Author

C. Sfienti, W. F. J. Müller, R. Bougault, E. Plagnol, Mariano Vigilante, K. Turzo, Aladin Collaborations, J. Lukasik, B. Tamain, D. Gourio, R. Legrain, Diane Doré, Elio Rosato, E. Vient, F. Lavaud, W. Trautmann, F. Bocage, J.C. Steckmeyer, Ph. Buchet, O. Lopez, M.L. Begemann-Blaich, J.D. Frankland, D. Guinet, A. Saija, G. Tabacaru, C. Schwarz, R. Dayras, A. Trzcinski, A. Chbihi, Sylvie Hudan, A. LeFevre, E. Galichet, R. Bittiger, Gerard Auger, D. Durand, N. Bellaize, P. Lautesse, H. Orth, B. Zwieglinski, B. Hurst, B. Borderie, J.L. Charvet, C. Leduc, Ch.O. Bacri, C. Volant, L. Nalpas, U. Lynen, J.L. Laville, Bertrand Bouriquet, 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), 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), 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 Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), INDRA, 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), 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), 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)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)

Subjects
Physics, Photon, business.industry, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, Nuclear matter, 01 natural sciences, 7. Clean energy, Charged particle, Nuclear physics, 0103 physical sciences, Thermal, Impact parameter, Atomic physics, 010306 general physics, business, Nuclear Experiment, 010303 astronomy & astrophysics, Thermal energy, Excitation
Abstract

Matière Nucléaire; International audience; The influence of radial flow on nuclear multifragmentation is studied using Au+Au central collisions for incident energies between 40 and 100 MeV/A. Central collisions are selected via an impact parameter estimator defined by the transverse energy of light charged particles. At all energies, the fragment size distributions are studied using the Statistical Multifragmentation Model (SMM) in order to extract thermal excitation energies. The excess kinetic energies are analyzed via the hypothesis of a radial, self-similar, but non-isotropic flow. At the lowest energy, this flow is small with respect to the thermal energy whereas, at 100 MeV/A thermal and radial energies are of the same order. The nature and origin of the radial flow is discussed. A comparison with the predictions of the Quantum Molecular Dynamics code is presented.

Published
2001

25. Excitation energy and angular momentum of quasiprojectiles produced in the Xe + Sn collisions at incident energies between 25 and 50 MeV/nucleon

Author

L. Nalpas, Sylvie Hudan, J. Normand, R. Dayras, A. Chbihi, J. Colin, B. Bouriquet, C. Leduc, Ph. Buchet, G. Tabacaru, Ch.O. Bacri, J.C. Steckmeyer, D. Guinet, J.D. Frankland, K. Turzo, R. Brou, N. De Cesare, N. Le Neindre, D. Cussol, B. Tamain, D. Durand, F. Saint-Laurent, G. Auger, Mariano Vigilante, L. Tassan-Got, M. Pârlog, E. Vient, R. Legrain, N. Bellaize, J.L. Charvet, O. Lopez, R. Bougault, Elio Rosato, J.F. Lecolley, F. Lavaud, P. Lautesse, M. Louvel, O. Tirel, E. Gerlic, A. Demeyer, E. Galichet, E. Genouin-Duhamel, Piotr Pawłowski, J.P. Wieleczko, D. Doré, M.F. Rivet, C. Volant, J.L. Laville, E. Plagnol, A. M. Maskay, Bernard Borderie, 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), 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 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), INDRA, Normandie Université (NU)-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 Claude Bernard Lyon 1 (UCBL), and 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)

Subjects
Nuclear reaction, Nuclear and High Energy Physics, Angular momentum, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Kinetic energy, 01 natural sciences, Peripheral reactions, Nuclear physics, Total angular momentum quantum number, 0103 physical sciences, Angular momentum coupling, Angular momentum transfer, 010306 general physics, Nuclear Experiment, Statistical and transport model calculations, Nuclear Physics, Physics, Heavy-ion interactions, Excitation energy, 010308 nuclear & particles physics, Charged particle, Projectile deexcitation, Nuclear reactions, Atomic physics, Nucleon, Excitation
Abstract

Matière Nucléaire; International audience; The excitation energy and angular momentum transferred to quasiprojectiles have been measured in the 129Xe+natSn collisions at bombarding energies between 25 and 50 MeV/nucleon. The excitation energy of quasiprojectiles has been determined from the kinetic energy of all decay products (calorimetry). It increases with the violence of the collision, approaching 10 MeV/nucleon in the most dissipative ones. The angular momentum has been deduced from the kinetic energies and angular distributions of the emitted light charged particles (p, d, t, 3He and α). The (apparent) spin value decreases with the violence of the collision. Larger spin values are observed at the lowest bombarding energy. Data are compared with the predictions of dynamical and statistical models. They reproduce the data in a quantitative way indicating that large spin values are transferred to quasiprojectiles during the interaction. The results show that the one-body dissipation formalism still applies at intermediate bombarding energies and low-energy dissipations. With the increase of the energy, the data seem to be better described when the two-body interaction is accounted for.

Published
2001

26. Fragmentation in peripheral heavy-ion collisions: from neck emission to spectator decays

Author

F. Bocage, E. Galichet, E. Plagnol, Mariano Vigilante, H. Orth, R. Dayras, F. Lavaud, D. Gourio, C. Sfienti, Bertrand Bouriquet, Gerard Auger, R. Bougault, M.L. Begemann-Blaich, C. Schwarz, A. Le Fèvre, D. Guinet, N. Bellaize, D. Durand, J.C. Steckmeyer, J.D. Frankland, B. Borderie, B. Hurst, R. Legrain, P. Lautesse, Elio Rosato, C. Volant, K. Turzo, B. Tamain, A. Saija, A. S. Botvina, Sylvie Hudan, A. Trzcinski, A. Chbihi, E. Vient, J. Lukasik, O. Lopez, U. Lynen, R. Bittiger, B. Zwieglinski, W. F. Mueller, J.L. Charvet, W. Trautmann, L. Nalpas, 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), 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), 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), INDRA, 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), 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), 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), J., Lukasik, G., Auger, M. L., BEGEMANN BLAICH, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., BOU RIQUET, J. L., Charvet, A., Chbihi, R., Dayra, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, B., Hurst, P., Lautesse, F., Lavaud, A., LE FVRE, R., Legrain, O., Lopez, U., Lynen, W. F. J., Mller, L., Nalpa, H., Orth, E., Plagnol, Rosato, Elio, A., Saija, C., Sfienti, C., Schwarz, J. C., Steckmeyer, B., Tamain, W., Trauttmann, A., Trzcinski, K., Turz, E., Vient, Vigilante, Mariano, C., Volant, and B. ZWIEGLINSKI E. A., Botvina

Subjects
Nuclear and High Energy Physics, Nuclear Theory, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Coalescence, 01 natural sciences, Spectral line, Coulomb repulsion, Symmetric heavy ion collision, Nuclear physics, Fragmentation (mass spectrometry), 0103 physical sciences, Nuclear Experiment (nucl-ex), Midrapidity emission, 010306 general physics, Nuclear Experiment, Physics, Hard scattering, 25.70.Mn, 25.70.Pq, 25.40.Sc, 010308 nuclear & particles physics, Projectile, Goldhaber model, Transverse plane, Coulomb trajectory calculation, Heavy ion, Nucleon
Abstract

Invariant cross sections of intermediate mass fragments in peripheral collisions of Au on Au at incident energies between 40 and 150 AMeV have been measured with the 4-pi multi-detector INDRA. The maximum of the fragment production is located near mid-rapidity at the lower energies and moves gradually towards the projectile and target rapidities as the energy is increased. Schematic calculations within an extended Goldhaber model suggest that the observed cross-section distributions and their evolution with energy are predominantly the result of the clustering requirement for the emerging fragments and of their Coulomb repulsion from the projectile and target residues. The quantitative comparison with transverse energy spectra and fragment charge distributions emphasizes the role of hard scattered nucleons in the fragmentation process., Comment: 5 pages, 5 eps figures, RevTeX4, submitted to Phys. Lett. B

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27. Isotopic Scaling and the Symmetry Energy in Spectator Fragmentation

Author

INDRA, The, Collaborations, ALADIN, Fèvre, A. Le, Auger, G., Begemann-Blaich, M. L., Bellaize, N., Bittiger, R., Bocage, F., Borderie, B., Bougault, R., Bouriquet, B., Charvet, J. L., Chbihi, A., Dayras, R., Durand, D., Frankland, J. D., Galichet, E., Gourio, D., Guinet, D., Hudan, S., Immé, G., Lautesse, P., Lavaud, F., Legrain, R., Lopez, O., Łukasik, J., Lynen, U., Müller, W. F. J., Nalpas, L., Orth, H., Plagnol, E., Raciti, G., Rosato, E., Saija, A., Schwarz, C., Seidel, W., Sfienti, C., Tamain, B., Trautmann, W., Trzciński, A., Turzó, K., Vient, E., Vigilante, M., Volant, C., Zwiegliński, B., Botvina, A. S., 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), 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), Conservatoire National des Arts et Métiers [CNAM] (CNAM), 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), ALADIN, INDRA, 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), 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), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), 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), A., LE FEVRE, G., Auger, M. L., BEGEMANN BLAICH, N., Bellaize, R., Bittiger, F., Bocage, B., Borderie, R., Bougault, B., Bouriquet, J. L., Charvet, A., Chbihi, R., Dayra, D., Durand, J. D., Frankland, E., Galichet, D., Gourio, D., Guinet, S., Hudan, G., Imm, P., Lautesse, F., Lavaud, R., Legrain, O., Lopez, J., Lukasik, U., Lynen, W. F. J., Muller, L., Nalpa, H., Orth, E., Plagnol, G., Raciti, Rosato, Elio, A., Saija, C., Schwarz, W., Seidel, C., Sfienti, B., Tamain, W., Trauttmann, A., Trzcinski, K., Turzo, E., Vient, Vigilante, Mariano, C., Volant, and B. ZWIEGLINSKI E. A. S., Botvina

Subjects
Scaling law, Photon, multifragmentation, Nuclear Theory, FOS: Physical sciences, General Physics and Astronomy, isoscaling, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Nuclear physics, Fragmentation (mass spectrometry), 0103 physical sciences, Nuclear Experiment (nucl-ex), Exponential law, 010306 general physics, Nuclear Experiment, Scaling, thermalization, Physics, 010308 nuclear & particles physics, Excited state, Atomic number, Atomic physics, Nucleon
Abstract

Isotopic effects in the fragmentation of excited target residues following collisions of $^{12}$C on $^{112,124}$Sn at incident energies of 300 and 600 MeV per nucleon were studied with the INDRA 4$\pi$ detector. The measured yield ratios for light particles and fragments with atomic number $Z \leq$ 5 obey the exponential law of isotopic scaling. The deduced scaling parameters decrease strongly with increasing centrality to values smaller than 50% of those obtained for the peripheral event groups. Symmetry term coefficients, deduced from these data within the statistical description of isotopic scaling, are near $\gamma =$ 25 MeV for peripheral and $\gamma, Comment: 4 pages, 4 figures

Published
2005

28. Unlocking the potential: laser surface modifications for titanium dental implants.

Author

Kolarovszki B, Ficsor S, Frank D, Katona K, Soos B, and Turzo K

Subjects
Humans, Animals, Osseointegration, Titanium, Dental Implants, Surface Properties, Lasers
Abstract

The review critically evaluates the current state of studies investigating laser irradiation for modifying titanium surfaces to enhance the biointegration of dental implants. Laser modification is a rapidly evolving physicochemical surface modification process with the potential to revolutionize dental implant technology. A thorough search of electronic databases, including PubMed, Science Direct, MEDLINE, and Web of Knowledge, was conducted to identify relevant articles. The review focuses on the surface features of laser-modified implants, encompassing in vitro cell culture experiments, rare animal experiments, and limited clinical trials. Of the 26 selected sources, 21 describe surface features, while only two involve in vivo human experiments. The review highlights the lack of long-term clinical experience and calls for further research to mature these technologies. Despite the absence of a consensus on optimal laser types and settings, the overall results are promising, with few negative outcomes. As research in laser irradiation of titanium surfaces progresses, significant advancements in dental implant technology and improved patient well-being are anticipated., (© 2024. The Author(s).)

Published
2024
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29. Glass Ceramic CAD/CAM crowns and severely altered posterior teeth: a three levels study.

Author

Fages M, Corn S, Slangen P, Raynal J, Ienny P, Turzo K, Cuisinier F, and Durand JC

Subjects
Cementation methods, Dental Materials, Dental Restoration Failure, Humans, Materials Testing, Mechanics, Bicuspid, Ceramics, Computer-Aided Design, Molar, Tooth Crown
Abstract

For many practitioners, longevity of full glass ceramic crowns in the posterior area, molars and premolars, remains a real challenge. The purpose of this article is to identify and evaluate the parameters that can significantly influence their resistance when preparing a tooth. The analysis proposed in this article relies on interrelated studies conducted at three levels: in vitro (mechanical tests), in silico (finite elements simulations) and in vivo (clinical survival rates). The in vitro and the in silico studies proved that an appropriate variation of the geometric design of the preparations enables to increase up to 80% the mechanical strength of ceramic reconstructions. The in vivo clinical study of CAD/CAM full ceramic crowns was performed in accordance with the principles stated within the in vitro and the in silico studies and provided a 98.97% success rate over a 6 years period. The variations of geometric design parameters for dental preparation allows for reconstructions with a mechanical breaking up to 80% higher than that of a non-appropriate combination. These results are confirmed in clinical practice.

Published
2017
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30. Comparison of effects of different fluoride containing prophylactics on the growth of Streptococcus mutans on titanium surfaces - an in vitro study.

Author

Barrak IA, Urban E, Turzo K, and Stajer A

Subjects
Equipment Contamination, Fluorides pharmacology, Streptococcus mutans drug effects, Streptococcus mutans growth & development, Titanium
Abstract

The combined use of high fluoride (F-) concentration and acidic pH can weaken the corrosion resistance of titanium (Ti). Caries prophylactic products contain high amounts of F- and are applied at a low pH. The aim of our study was to determine whether the different forms of applied flouride has different effects on the growth of Streptococcus mutans on different titanium surfaces. Titanium with polished surface were treated with a gel (pH: 4,8) containing 1,25% olaflur, a rinse (pH: 4,4) containing 0,025% olaflur or a 1% aqueous solution of NaF at a pH of 4,5. Control discs were not treated. All discs were incubated with S. mutans for 21 days. To assess the amount of S. mutans protein assay analysis was performed at 5, 10 and 21 days. Scanning electron microscopic (SEM) investigations were also executed. By the 21st day significant differences could be observed in the bacterial protein quantity. The between group- comparisons showed that the rinse and gel were superior to NaF or control group (p < 0,01 and p < 0,05). Furthermore signs of corrosion could be observed in the group of gel treated discs. The results suggest that amine-fluoride content mouthwashes might be a suitable choice for prevention to the patients with dental implants.

Published
2017

31. Comparative mechanical behavior of dentin enamel and dentin ceramic junctions assessed by speckle interferometry (SI).

Author

Fages M, Slangen P, Raynal J, Corn S, Turzo K, Margerit J, and Cuisinier FJ

Subjects
Computer-Aided Design, Dental Stress Analysis, Humans, Image Interpretation, Computer-Assisted, Interferometry instrumentation, Interferometry methods, Ceramics chemistry, Crowns, Dental Enamel chemistry, Dental Prosthesis Design methods, Dentin chemistry, Tooth Crown chemistry
Abstract

Objective: The dentin-enamel junction (DEJ) plays a crucial role in dental biomechanics; however, little is known about its structure and mechanical behavior. Nevertheless, natural teeth are a necessary model for prosthetic crowns. The mechanical behavior of the natural DEJ and the dentin ceramic junction (DCJ) manufactured with a CAD-CAM system are compared., Methods: The reference samples undergo no modification, while the experimental samples were drilled to receive a cemented feldspathic ceramic crown. Longitudinally cut samples were used to achieve a planar object observation and to look "inside" the tooth. A complete apparatus enabling the study of the compressive mechanical behavior of the involved tooth by a non-contact laser speckle interferometry (SI) was developed to allow nanometric displacements to be tracked during the compression test., Results: It is observed that the DEJ acted as a critical zone accommodating the movement between dentin and enamel. A smooth transition occurs between dentin and enamel. In the modeled prosthetic, the same kind of accommodation effects also occurs, but with a steeper transition slope between dentin and ceramic., Significance: On the natural tooth, the stress accommodation arises from a differential behavior between enamel and dentin from the DEJ. In the ceramic crown, the cemented dentin-ceramic junction should play this role. This study demonstrates the possible realization of prosthetic crown reconstructions approaching biomechanical behaviors., (Copyright © 2012 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.)

Published
2012
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