TITLE:
From Sequential Processes to Multifragmentation in Proton Reactions with Gold
AUTHORS:
Sergej P. Avdeyev, Victor A. Karnaukhov, Helmut Oeschler, Waldemar Karcz, Vahan V. Kirakosyan, Pavel A. Rukoyatkin, Edwin Norbeck, Alexander S. Botvina
KEYWORDS:
Multifragmentation; Correlations; Emission
JOURNAL NAME:
Journal of Modern Physics,
Vol.4 No.11,
November
22,
2013
ABSTRACT:
The distribution of relative angles between the intermediate mass
fragments has been measured and analyzed for thermal multifragmentation in p + Au collisions at 2.1, 3.6 and 8.1 GeV. The analysis has been done on
an event by event basis. The multibody Coulomb trajectory calculations of all
charged particles have been performed starting with the initial break-up
conditions given by the combined model with the revised intranuclear cascade
(INC) followed by the statistical multifragmentation model. The measured
correlation function was compared with the calculated one to find the actual
time scale of the intermediate mass fragment (IMF) emission. It found
transition from sequential evaporation for p(2.1
GeV) + Au to simultaneous multibody
decay of a hot and expanded nuclear system in case of p(8.1 GeV) + Au.