/ Experiment-Nucl nucl-ex/0602013


Nuclear multifragmentation and fission: Similarity and differences


Karnaukhov, V. (Dubna, JINR) ; Oeschler, H. (Darmstadt, Tech. Hochsch.) ; Avdeyev, S. (Dubna, JINR) ; Rodionov, V. (Dubna, JINR) ; Kirakosyan, V. (Dubna, JINR) ; Simonenko, A. (Dubna, JINR) ; Rukoyatkin, P. (Dubna, JINR) ; Budzanowski, A. (Cracow, INP) ; Karcz, W. (Cracow, INP) ; Skwirczynska, I. (Cracow, INP) ; Czech, B. (Cracow, INP) ; Chulkov, L. (Kurchatov Inst., Moscow) ; Kuzmin, E. (Kurchatov Inst., Moscow) ; Norbeck, E. (Moscow, INR) ; Botvina, A. (Moscow, INR)

Published in: Nucl.Phys.
Year: 2006
Vol.: A780
Page No: 91-99
Pages: 7

Abstract: Thermal multifragmentation of hot nuclei is interpreted as the nuclear liquid--fog phase transition deep inside the spinodal region. The experimental data for p(8.1GeV) + Au collisions are analyzed. It is concluded that the decay process of hot nuclei is characterized by two size parameters: transition state and freeze-out volumes. The similarity between dynamics of fragmentation and ordinary fission is discussed. The IMF emission time is related to the mean rupture time at the multi-scission point, which corresponds to the kinetic freeze-out configuration.

Keyword(s): Nuclear reactions, (197)Au(p,X), E=8.1GeV ; analyzed, fragment charge and kinetic distributions, multifragmentation emission time ; deduced, chemical and kinetic freeze-out volumes

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