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

Journal Article · Fri Nov 02 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.182701· OSTI ID:21024379

Mitsuoka, S; Ikezoe, H; Nishio, K; Tsuruta, K ^[1]; Jeong, S C; Watanabe, Y ^[2]

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1. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
2. 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, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BACKSCATTERING
CHROMIUM 54
COLD FUSION
COUPLED CHANNEL THEORY
EXCITATION
IRON 56 BEAMS
LEAD 208 TARGET
NICKEL 64
NUCLEON-NUCLEON INTERACTIONS
OCTUPOLES
PHONONS
QUADRUPOLES
QUASI-ELASTIC SCATTERING
RUTHERFORD SCATTERING
TITANIUM 48 BEAMS
ZINC 70