Inelastic scattering of protons, sup 3 He, and sup 4 He at 30 MeV/nucleon from sup 166 Er and sup 176 Yb and quadrupole moments of the optical potential

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.45.1533· OSTI ID:7043808

Kamigaito, O; Sakaguchi, H; Nakamura, M; Hirata, S; Togawa, H; Nakano, T; Yosoi, M; Ieiri, M; Ichihara, T; Shimizu, H M; Nakai, Y; Kobayashi, S ^[1]

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1. Department of Physics, Kyoto University, Kyoto 606 (Japan)

Elastic and inelastic scattering of polarized protons, {sup 3}He particles, and {sup 4}He particles from {sup 166}Er and {sup 176}Yb have been measured at the incident energy of 30 MeV/nucleon. Coupled-channels analyses have been performed using the deformed optical potentials (DOP's) based on the symmetric rotational model. The quadrupole ({ital Q}{sub 2}) moments of the real parts of the DOP's for the {sup 4}He scattering have been found to be larger than those of the charge distributions by about 5%. They are well explained by the folding model calculation with the density-dependent M3Y interaction. The {ital Q}{sub 2} moments for the proton and the {sup 3}He scattering are almost equal to or smaller than the charge quadrupole moments, and are not reproduced by the conventional folding model. These discrepancies suggest that there are other important reaction mechanisms not being explained in terms of the folding model with the effective interaction. For the proton scattering, the explicit coupled-channels calculations including neutron pickup channels are found to reduce largely the discrepancies in the {ital Q}{sub 2} moments. Breakup channels are expected to give a significant contribution to the small {ital Q}{sub 2} moments of the DOP's for the {sup 3}He scattering.

• OSTI ID: 7043808
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 45:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663430 -- Nucleon-Induced Reactions & Scattering-- (1992-)
663440 -- D-
T-
& He-induced Reactions & Scattering-- (1992-)
663570* -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BEAMS
CHARGE DISTRIBUTION
CHARGED-PARTICLE REACTIONS
COUPLED CHANNEL THEORY
ENERGY RANGE
ERBIUM 166 TARGET
FOLDING MODEL
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HELIUM 3 REACTIONS
INTERACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
OPTICAL MODELS
PARTICLE INTERACTIONS
POLARIZED BEAMS
PROTON REACTIONS
QUADRUPOLE MOMENTS
SCATTERING
TARGETS
YTTERBIUM 176 TARGET