Mass dependence of fragment anisotropy in the fission of {sup 11}B+{sup 237}Np and {sup 16}O+{sup 209}Bi systems
- Nuclear Physics Division, Bhabha Atomic Research Centre, Bombay 400085 (India)
Measurements were carried out on mass, energy correlations of fission fragments for the systems of {sup 11}B+{sup 237}Np at {ital E}{sub lab}=76 MeV and {sup 16}O+{sup 209}Bi at {ital E}{sub lab}=100 MeV at forward and perpendicular angles of emission with respect to the beam direction. The fragment anisotropy averaged over all fragment masses matches well for both the systems with the standard saddle point statistical model calculations. Variation of the angular anisotropy and total kinetic energy of fragments were studied as a function of the mass of the fragment pair. For the {sup 11}B+{sup 237}Np system, the fragment anisotropy is seen to be nearly independent of the fragment mass, whereas for the {sup 16}O+{sup 209}Bi system, the anisotropy is seen to decrease with increasing fragment mass asymmetry. The results are discussed on the basis of the statistical model of fragment angular distributions and mass division in the fission process. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 385845
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 54; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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