L. Beaulieu et al., Testing binomial reducibility and thermal scaling in hadron-induced multifragmentation - art. no. 031302, PHYS REV C, 6303(3), 2001, pp. 1302
A binomial reducibility and thermal scaling analysis is performed on well-c
hacracterized thermal-like sources formed in 8 GeV/c pi (-) + Au-197 reacti
ons. The fragment probability distributions are shown to be binomial when p
lotted as a function of the measured excitation energy E* and the binomial
elementary probability p is shown to follow the expected Boltzmann factor:
ln(p)proportional to exp(-B/root(E*/A) over bar), Binomial reducibility and
thermal scaling are explored also using global variables other than E*, an
d the effect of source size on the binomial parameter p and m is shown. Fin
ally, the extracted probability p is found to be correlated with the experi
mentally deduced fragment emission time up to about 6A MeV of excitation en
ergy, hinting at a possible transition in decay mechanism above that excita
tion energy.