Published April 2003
| Version v1
Journal article
Influence of neutron shell closure (Nc=126) on prescission particle emission of fissioning systems 216,224Th
Description
The effect of neutron shell closure Nc=126 on the prescission-particle emission of 216Th and 224Th nuclei is investigated within the framework of an extensive Smoluchowski equation. It is found that there is a large difference in the prescission neutron multiplicity for the two Th nuclei, indicating a strong shell effect in neutron emission. Moreover, shell effects on particle emission are also investigated as functions of excitation energy, angular momentum and nuclear viscosity. The results show that with increasing excitation energy shell effects in prefission neutron evolve from continual strength to gradual weakness. Both high angular momenta and low viscosity weaken the shell effects on the particle emission
Additional details
Publishing Information
- Journal Title
- Chinese Physics Letters
- Journal Volume
- 20
- Journal Issue
- 4
- Journal Page Range
- p. 482-485
- ISSN
- 0256-307X
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 35020476
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ANGULAR MOMENTUM; EXCITATION; FISSION; MULTIPLICITY; NEUTRON EMISSION; NEUTRONS; SHELL MODELS; THORIUM 216; THORIUM 224; VISCOSITY
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYONS; ELEMENTARY PARTICLES; EMISSION; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; FERMIONS; HADRONS; HEAVY NUCLEI; ISOTOPES; MATHEMATICAL MODELS; MILLISECONDS LIVING RADIOISOTOPES; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; THORIUM ISOTOPES