S. P. Avdeyev

Critical temperature for the nuclear liquid gas phase transition

The charge distribution of the intermediate mass fragments produced in p

Time scale of the thermal multifragmentation in p+Au collisions at 8.1 GeV

(8.1mathrm{GeV})+mathrm{Au}

Critical temperature for the nuclear liquid-gas phase transition (from multifragmentation and fission)

collisions is analyzed in the framework of the statistical multifragmentation model with the critical temperature for the nuclear liquid-gas phase transition

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

{T}_{c}

Multifragmentation and nuclear phase transitions (liquid-fog and liquid-gas)

as a free parameter. It is found that

Nuclear multifragmentation and fission: Similarity and differences

{T}_{c}=20ifmmodepmelsetextpmfi{}3mathrm{MeV}

Two characteristic volumes in thermal nuclear multifragmentation

(90% C.L.).

Thermal Multifragmentation of Hot Nuclei and Liquid-Fog Phase Transition *

Abstract The relative angle correlation of intermediate mass fragments has been studied for p+Au collisions at 8.1xa0GeV. Strong suppression at the small angles is observed caused by IMF–IMF Coulomb repulsion. Experimental correlation function is compared to that obtained by the multibody Coulomb trajectory calculations with the various decay times τ of fragmenting system. The combined model, including the empirically modified intranuclear cascade followed by statistical multifragmentation, was used to generate starting conditions for these calculations. The model dependence of the results obtained has been carefully checked. The mean decay time of fragmenting system is found to be τ⩽70xa0fm/c.

COLLECTIVE FLOW IN NUCLEAR FRAGMENTATION INDUCED BY 4.4 GeV DEUTERON ON GOLD TARGET

Critical temperature Tc for the nuclear liquid-gas phase transition is estimated from both the multifragmentation and fission data. In the first case, the critical temperature is obtained by analysis of the intermediate-mass-fragment yields in p(8.1 GeV) + Au collisions within the statistical model of multifragmentation. In the second case, the experimental fission probability for excited 188Os is compared with the calculated one with Tc as a free parameter. It is concluded for both cases that the critical temperature is higher than 15 MeV.

Emission time of the intermediate mass fragments in collisions of relativistic deuterons with the gold target

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 V t = (2.6xa0±xa00.3) V o , with V o as the volume at normal density. However, the freeze-out volume is found to be twice as large: V f = (5xa0±xa01) V o .