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25 April 2024

» arxiv » nucl-ex/0102007

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Transition from Thermal to Rapid Expansion in Multifragmentation of Gold Induced by Light Relativistic Projectiles
S.P.Avdeyev ; V.A.Karnaukhov ; L.A.Petrov ; V.K.Rodionov ; V.D.Toneev ; H.Oeschler ; O.V.Bochkarev ; L.V.Chulkov ; E.A.Kuzmin ; A.Budzanowski ; W.Karcz ; M.Janicki ; E.Norbeck ; A.S.Botvina ;
Date:	17 Feb 2001
Journal:	Phys.Lett. B503 (2001) 256-262
Subject:	nucl-ex
Abstract:	Multiple emission of intermediate-mass fragments has been studied for the collisions of p, $^4$He and $^{12}$C on Au with the $4pi$ setup FASA. In the case of $^{12}$C(22.4 GeV)+Au and $^4$He(14.6 GeV)+Au collisions, the deviations from a pure thermal break-up are seen in the energy spectra of the emitted fragments: the spectra are harder than calculated and than measured in p-induced collisions. This difference is attributed to a collective flow with the expansion velocity on the surface about 0.1 $c$ (for $^{12}$C+Au collisions).
Source:	arXiv, nucl-ex/0102007
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