Anisotropy in fission fragment and prompt neutron angular distributions
Open Access
- 15 December 2021
- journal article
- research article
- Published by EDP Sciences in EPJ Web of Conferences
- Vol. 256, 00009
- https://doi.org/10.1051/epjconf/202125600009
Abstract
Several physics mechanisms can lead to the deviation from an isotropic angular distribution for both fission fragments and the neutrons that are emitted during the fission event. Two of these effects have recently been implemented into CGMF, the Monte Carlo fission event generator developed at Los Alamos National Laboratory: angular distribution sampling for fission fragments and pre-equilibrium neutrons (those emitted before the compound nucleus forms). Using these new developments, we show that the anisotropy of the neutrons reflects the anisotropy of the fission fragments, in particular as the outgoing energy of neutrons increases. Correlations between the fission fragment and neutron anisotropies could be used to extract the fission fragment anisotropy from the neutron angular distributions.Keywords
This publication has 30 references indexed in Scilit:
- The statistical theory of multi-step compound and direct reactionsAnnals of Physics, 1980
- Fragment Anisotropies in Neutron-, Deuteron-, and Alpha-Particle-Induced FissionPhysical Review B, 1965
- Energy and angular distributions of prompt neutrons from slow neutron fission of U235Nuclear Physics, 1963
- Emission of Prompt Neutrons in the Thermal Neutron Fission ofPhysical Review B, 1963
- Further Studies of the Prompt Neutrons from the Spontaneous Fission ofPhysical Review B, 1963
- Velocity and Angular Distributions of Prompt Neutrons from Spontaneous Fission ofPhysical Review B, 1962
- Angular Distribution of Fragments in Fission Induced by Mev NeutronsPhysical Review B, 1960
- Angular Distributions of Fragments from Neutron-Induced Fission ofandPhysical Review B, 1959
- Angular Distribution of Fragments from Neutron-Induced Fission ofandPhysical Review B, 1956
- Angular Dependence of the Neutron-Induced Fission Process. IIPhysical Review B, 1955