Fission-fragment angular distributions and excitation functions in fission following complete fusion and targetlike-fragment fission reactions of {sup 19}F+{sup 232}Th at near- and sub-barrier energies
- Saha Institute of Nuclear Physics, I/AF, Bidhannagar, Calcutta-700064 (India)
- Nuclear Physics Division, BARC, Bombay-400085 (India)
The fragment angular distributions and excitation functions of the fission following complete fusion (FFCF) have been measured after separating them from targetlike-fragment fission (TLFF) for the {sup 19}F+{sup 232}Th system in the bombarding energy range of 84.5 to 106.5 MeV. The fraction of the targetlike-fragment fission was observed to increase with decreasing bombarding energy below the Coulomb barrier. The excitation function for fission following complete fusion reaction agrees well with coupled channel calculations. However, the {l_angle}{ital l}{sup 2}{r_angle} values derived from the fragment anisotropy data of the FFCF events are found to be much larger than those calculated using the coupled channel transmission coefficient values. The discrepancy between the experimental and calculated {l_angle}{ital l}{sup 2}{r_angle} values increases as the bombarding energy is decreased below the barrier.
- OSTI ID:
- 55151
- Journal Information:
- Physical Review, C, Vol. 51, Issue 6; Other Information: PBD: Jun 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Precise fission fragment anisotropies for the {sup 12}C+{sup 232}Th reaction: Supporting the nuclear orientation dependence of quasifission
Yields of correlated fragment pairs in spontaneous fission of {sup 252}Cf