Effect of N/Z in pre-scission neutron multiplicity for 16,18O + 194,198Pt systems
- ORNL
Pre-scission neutron multiplicities from fission of the compound nuclei 210,212,214,216Rn have been measured in order to investigate the N/Z dependence of fission hindrance. The Rn isotopes are populated through the fusion of 16,18O + 194,198Pt systems and are formed at four excitation energies in the range of 50 79 MeV. The experimental pre-scission neutron yield is compared with predictions from the statistical model of compound nuclear decay containing the strength of nuclear dissipation as a free parameter. The strength of nuclear dissipation obtained in the present analysis does not show any specific dependence on the N/Z values of the fissioning nuclei at large excitation energies. The dissipation strength at the lowest excitation energy, however, indicates a shell closure effect at N = 126 for the 212Rn isotope.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 1092360
- Journal Information:
- Physical Review C, Vol. 87, Issue 1
- Country of Publication:
- United States
- Language:
- English
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