Transformations of actinides fission product yields due to post-scission emission of nuclear particles: ²³²Th

Abstract

The "many ensembles" method was proposed to investigate the influence of nuclear particles' post-scission emission on mass and charge distributions of fission products. The post scission approximation had been used; each of these ensembles consists of the fission fragments after emission of chains of different lengths, both the beta (±β) particles and neutrons. The theory allows one to
 find the most probable two fragment clusters of fission products and study their evolution after the post-scission emission of nuclear particles. The isotope <sup>232</sup>Th was chosen as an example, the fission fragments of which are intensively studied in the experiment. It is shown that the post-scission emission of nuclear particles eventually leads to the convergence of the asymmetric peaks, which looks like enhanced symmetric fission mode over asymmetric one for fission product yields. A comparison of the theoretical results and experimental data for the <sup>232</sup>Th fission fragments indicates their satisfactory matching.

Nucleosynthesis of Nuclear Matter: Entropy Effects

“…In the works [18,19], a method of statistical ensembles is proposed, which is based on color statistics and allows to study of the thermodynamic ordering after splitting arrays of nuclei-fragments of the original nucleus of arbitrary mass (A) and charge (Z). Its basis is using thermodynamic functions oriented to study the stability of a system of many particles.…”