A systematic study of isospin effects in the breakup of projectile spectators at relativistic energies has been performed with the ALADiN spectrometer at the GSI laboratory (Darmstadt). Four different projectiles Au-197, La-124, Sn-124 and Sn-107, all with an incident energy of 600 AMeV, have been used, thus allowing a study of various combinations of masses and N/Z ratios in the entrance channel. The measurement of the momentum vector and of the charge of all projectile fragments with Z > 1 entering the acceptance of the ALADiN magnet has been performed with the high efficiency and resolution achieved with the TP-MUSIC IV detector. The Rise and Fall behavior of the mean multiplicity of IMFs as a function of Z(bound) and its dependence on the isotopic composition has been determined for the studied systems. Other observables investigated so far include mean N/Z values of the emitted light fragments and neutron multiplicities. Qualitative agreement has been obtained between the observed gross properties and the predictions of the Statistical Multifragmentation Model.

Mass and isospin effects in multifragmentation / C. Sfienti,P. Adrich,T. Aumann, C.O. Bacri, T. Barczyk, R. Bassini, C. Boiano, A.S. Botvina, A. Boudard, J. Brzychczyk, A. Chbihi, J. Cibor, B. Czech, M. De Napoli, J.E. Ducret, H. Emling, J. Frankland, M. Hellstrom, D. Henzlova, K. Kezzar, G. Imme, I. Iori, H. Johansson, A. Lafriakh, A. Le Fevre, E. Le Gentil, Y. Leifels, W.G. Lynch, J. Luhning, J. Lukasik, U. Lynen, Z. Majka, M. Mocko, W.F.J. Muller, A. Mykulyak, H. Orth, A.N. Otte, R. Palit, A. Pullia, G. Raciti, E. Rapisarda, H. Sann, C. Schwarz, H. Simon, A. Sokolov, K. Summerer, W. Trautmann, M.B. Tsang, G. Verde, C. Volaut, M. Wallace, H. Weick, J. Wiechula, A. Wieloch, B. Zwieglinski. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 749:1-4(2005 Mar 07), pp. 83C-92C.

Mass and isospin effects in multifragmentation

I. Iori;A. Pullia;
2005

Abstract

A systematic study of isospin effects in the breakup of projectile spectators at relativistic energies has been performed with the ALADiN spectrometer at the GSI laboratory (Darmstadt). Four different projectiles Au-197, La-124, Sn-124 and Sn-107, all with an incident energy of 600 AMeV, have been used, thus allowing a study of various combinations of masses and N/Z ratios in the entrance channel. The measurement of the momentum vector and of the charge of all projectile fragments with Z > 1 entering the acceptance of the ALADiN magnet has been performed with the high efficiency and resolution achieved with the TP-MUSIC IV detector. The Rise and Fall behavior of the mean multiplicity of IMFs as a function of Z(bound) and its dependence on the isotopic composition has been determined for the studied systems. Other observables investigated so far include mean N/Z values of the emitted light fragments and neutron multiplicities. Qualitative agreement has been obtained between the observed gross properties and the predictions of the Statistical Multifragmentation Model.
ASYMMETRIC NUCLEAR-MATTER; ISOTOPIC-YIELD RATIOS; COMPLEX FRAGMENTS; TEMPERATUR
Settore ING-INF/01 - Elettronica
Settore FIS/01 - Fisica Sperimentale
7-mar-2005
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/16609
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