Conservation of Isospin in Neutron-rich Fission Fragments
- Department of Physics, Indian Institute of Technology, Roorkee-247667 (India)
On the occasion of the 75{sup th} anniversary of the fission phenomenon, we present a surprisingly simple result which highlights the important role of isospin and its conservation in neutron rich fission fragments. We have analysed the fission fragment mass distribution from two recent heavyion reactions {sup 238}U({sup 18}O,f) and {sup 208}Pb({sup 18}O,f) as well as a thermal neutron fission reaction {sup 245}Cm(n{sup th},f). We find that the conservation of the total isospin explains the overall trend in the observed relative yields of fragment masses in each fission pair partition. The isospin values involved are very large making the effect dramatic. The findings open the way for more precise calculations of fission fragment distributions in heavy nuclei and may have far reaching consequences for the drip line nuclei, HI fusion reactions, and calculation of decay heat in the fission phenomenon.
- OSTI ID:
- 22436701
- Journal Information:
- Nuclear Data Sheets, Vol. 120; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0090-3752
- Country of Publication:
- United States
- Language:
- English
Similar Records
Quantal diffusion approach for multinucleon transfer processes in the 58,64Ni + 208Pb reactions: Toward the production of unknown neutron-rich nuclei
EFFECTS OF NUCLEAR SHELL ON THE DISTRIBUTION OF KINETIC ENERGY FRAGMENTS IN FAST NEUTRON FISSION