Total kinetic energy release in the fast neutron induced fission of actinide nuclei

Ashley Pica,Alexander Chemey,Walter Loveland,A Pakou,G Lalazissis,G Souliotis,D Bonatsos

doi:10.1051/epjconf/202125207004

Abstract

The total kinetic energy (TKE) release in the fast neutron-induced fission of various actinide nuclei was measured for neutron energies for En=2.6-100 MeV at the Weapons Neutron Research facility of the Los Alamos National Laboratory. The data are compared to the GEF model of the fission process. The variances of the TKE distributions appear to decrease with increasing Z and A of the fissioning systems.

Highlights

The largest part of the prompt energy release in fission (169.1 MeV out of 185.6 MeV for 235 U(nth,f)) is in the form of the total kinetic energy (TKE) of the fission fragments
The magnitude of the TKE release depends on the Coulomb forces between the nascent fragments at scission and the possible transfer of collective energy into either nucleonic excitation or fragment motion at scission
In this paper we describe the measurement of the TKE release in the fast neutron induced fission of 232 Th, 235 U and

Summary

Introduction

The largest part of the prompt energy release in fission (169.1 MeV out of 185.6 MeV for 235 U(nth ,f)) is in the form of the total kinetic energy (TKE) of the fission fragments. For this energy range , the mean total kinetic energy decreases non-linearly from.

TKE distribution variances

Methods