Barrier Distributions Derived from Quasielastic Backscattering of {sup 48}Ti, {sup 54}Cr, {sup 56}Fe, {sup 64}Ni, and {sup 70}Zn Projectiles on a {sup 208}Pb Target
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
- Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801 (Japan)
In order to study the nucleus-nucleus interaction in Pb-based cold fusion, we have measured excitation functions for quasielastic scattering of {sup 48}Ti, {sup 54}Cr, {sup 56}Fe, {sup 64}Ni, and {sup 70}Zn projectiles on a {sup 208}Pb target at backward angles. The barrier distributions were derived from the first derivative of measured quasielastic scattering cross sections relative to the Rutherford scattering cross section. The centroids of the barrier distributions show a deviation from several predicted barrier heights toward the low energy side. The shape of the barrier distributions is well reproduced by the results of a coupled-channel calculation taking account of the coupling effects of two phonon excitations of the quadrupole vibration for the projectiles and of the octupole vibration for the {sup 208}Pb target.
- OSTI ID:
- 21024379
- Journal Information:
- Physical Review Letters, Vol. 99, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.99.182701; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Barrier distribution from {sup 9}Be+{sup 208}Pb quasielastic scattering: Breakup effects in the interaction processes
Barrier distribution of quasi-elastic backward scattering