Description of the mass-asymmetric fission of the Pt isotopes, obtained in the reaction Ar36+Nd142 within the two-stage fusion-fission model

V. L. Litnevsky, F. A. Ivanyuk, G. I. Kosenko, and S. Chiba
Phys. Rev. C 99, 054624 – Published 24 May 2019

Abstract

The two-stage dynamical stochastic model developed earlier for the description of fusion-fission reactions is applied to the calculation of mass and energy distributions of fission fragments of platinum isotopes in the reaction Ar36+Nd142Pt178x+xn. The first stage of this model is the calculation of the approaching of the projectile nucleus to the target nucleus. In the second stage, the evolution of the system formed after the touching of the projectile and target nuclei is considered. The evolution of the system in both stages is described by three-dimensional Langevin equations for the shape parameters of the system. The mutual orientation of the colliding ions and tunneling through the Coulomb barrier in the entrance channel are also taken into account. The potential energy of the system is calculated within the macroscopic-microscopic approach. The calculated mass-energy distributions of fission fragments are compared with the available experimental data. The impact of shell effects, rotation of the system, and neutron evaporation on the calculated results is discussed.

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  • Received 1 April 2019

DOI:https://doi.org/10.1103/PhysRevC.99.054624

©2019 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

V. L. Litnevsky*

  • Omsk State Transport University, 644046 Omsk, Russia

F. A. Ivanyuk

  • Institute for Nuclear Research, 03028 Kiev, Ukraine

G. I. Kosenko

  • Omsk Tank Automotive Engineering Institute, 644098 Omsk, Russia

S. Chiba§

  • Tokyo Institute of Technology, 152–8550 Tokyo, Japan

  • *vlad.lit@bk.ru
  • ivanyuk@kinr.kiev.ua
  • kosenkophys@gmail.com
  • §chiba.satoshi@nr.titech.ac.jp

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Issue

Vol. 99, Iss. 5 — May 2019

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