Eur. Phys. J. A (2018) 54: 231
https://doi.org/10.1140/epja/i2018-12660-9

Regular Article - Theoretical Physics

Calculation of the ratio in various approaches for the fission width

¹ Institute for Nuclear Research, Prospect Nauki 47, 03028, Kiev, Ukraine
² Faculty of Physics, Taras Shevchenko National University of Kiev, Prospect Glushkova 2, 03022, Kiev, Ukraine
³ Ukrainian State University of Chemical Technology, Prospect Gagarina 8, 49005, Dnepr (Dnepropetrovsk), Ukraine
⁴ Financial University, Leningradsky Prospect 49, 125993, Moscow, Russia

^* e-mail: denisov@kinr.kiev.ua

Received: 1 August 2018
Accepted: 26 November 2018
Published online: 24 December 2018

Abstract

The ratio is calculated using different expressions for the fission width, which take into account and ignore the dependence of the fission barrier on the excitation energy. A strong influence of the energy-dependent fission barrier on the ratio is shown. The dependence of the synthesis of superheavy nuclei on the ratio is discussed. The experimental values of the ratio in ¹⁸⁸Os and ^{210, 212}Po are well described using the fission width with a barrier dependent on the excitation energy. The values of the fission barrier height for these nuclei are estimated.