Testing binomial reducibility and thermal scaling in hadron-induced multifragmentation

L. Beaulieu, T. Lefort, K. Kwiatkowski, W. C. Hsi, L. Pienkowski, R. G. Korteling, R. Laforest, E. Martin, E. Ramakrishnan, D. Rowland, A. Ruangma, V. E. Viola, E. Winchester, S. J. Yennello

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Abstract

A binomial reducibility and thermal scaling analysis is performed on well-chacracterized thermal-like sources formed in 8 GeV/c π- + 197Au reactions. The fragment probability distributions are shown to be binomial when plotted 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)∝exp(-B/√E*/A). Binomial reducibility and thermal scaling are explored also using global variables other than E*, and the effect of source size on the binomial parameter p and m is shown. Finally, the extracted probability p is found to be correlated with the experimentally deduced fragment emission time up to about 6A MeV of excitation energy, hinting at a possible transition in decay mechanism above that excitation energy.

Original languageEnglish
Article number031302
Pages (from-to)313021-313025
Number of pages5
JournalPhysical Review C - Nuclear Physics
Volume63
Issue number3
DOIs
StatePublished - Mar 2001

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    Beaulieu, L., Lefort, T., Kwiatkowski, K., Hsi, W. C., Pienkowski, L., Korteling, R. G., Laforest, R., Martin, E., Ramakrishnan, E., Rowland, D., Ruangma, A., Viola, V. E., Winchester, E., & Yennello, S. J. (2001). Testing binomial reducibility and thermal scaling in hadron-induced multifragmentation. Physical Review C - Nuclear Physics, 63(3), 313021-313025. [031302]. https://doi.org/10.1103/PhysRevC.63.031302