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Spinodal decomposition, nuclear fog and two characteristic volumes in thermal multifragmentation


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

Published in: Nucl.Phys.
Year: 2005
Vol.: A749
Page No: 65-72
Pages: 8

Abstract: Thermal multifragmentation of hot nuclei is interpreted as the nuclear liquid-fog phase transition inside the spinodal region. The experimental data for p(8.1GeV) + Au collisions are analyzed within the framework of the statistical multifragmentation model (SMM) for the events with emission of at least two IMFs. It is found that the partition of hot nuclei is specified after expansion to a volume equal to Vt = (2.6+-0.3) Vo, with Vo as the volume at normal density. However, the freeze-out volume is found to be twice as large: Vf = (5+-1) Vo.

Web-Page: http://dx.doi.org/10.1016/j.nuclphysa.2004.12.009

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