Excitation of the ground state rotational band in /sup 20/Ne by 0. 8 GeV protons

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.30.1233· OSTI ID:6043817

Blanpied, G S; Balchin, G A; Langston, G E; Ritchie, B G; Barlett, M L; Hoffmann, G W; McGill, J A; Franey, M A; Gazzaly, M; Wildenthal, B H

Angular distributions for the scattering of 0.8 GeV polarized protons from the ground state rotational band in /sup 20/Ne are reported. Cross sections and analyzing powers for protons exciting these states were measured with a high resolution spectrometer. Coupled channels and distorted wave Born approximation analyses of scattering data for the 0/sup +/, 2/sup +/, 4/sup +/, and experimentally unresolved 6/sup +/ states are presented. The observed cross section data for the 0/sup +/, 2/sup +/, and 4/sup +/ states are reproduced quite well with the coupled channels calculations, and the large hexadecapole deformation reported previously is confirmed. The distorted wave Born approximation results are equally good for the 0/sup +/ angular distribution, but are a significantly poorer representation of the cross section data for the 2/sup +/ and 4/sup +/ states. Both calculations do equally well in explaining the 0/sup +/ analyzing power data and both fail to explain the 4/sup +/ analyzing power data past the region of the first maximum. The coupled channels results do a better job in explaining the 2/sup +/ analyzing power data. The multipole moments of the deformed optical potential used in the coupled channels calculations are related to those of the matter distributions by Satchler's theorem. These are compared to the moments found using other hadronic probes, those of the charge distribution determined by electromagnetic measurements, and to moments from shell model and Hartree-Fock calculations.

• Research Organization: University of South Carolina, Columbia, South Carolina 29208
• OSTI ID: 6043817
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 30:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANGULAR DISTRIBUTION
BARYON REACTIONS
BEAMS
BORN APPROXIMATION
CHARGED-PARTICLE REACTIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
DWBA
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
HADRON REACTIONS
INELASTIC SCATTERING
INFORMATION
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NEON 20
NEON 20 TARGET
NEON ISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
OPTICAL MODELS
POLARIZED BEAMS
PROTON REACTIONS
ROTATIONAL STATES
SCATTERING
SHELL MODELS
STABLE ISOTOPES
TARGETS