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T/sub >/giant resonance in /sup 142/Nd via the reaction /sup 142/Nd(e,e'p)

Journal Article · · Phys. Rev., C; (United States)
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The reaction /sup 142/Nd(e,e'p)/sup 141/Pr has been used to study the T/sub >/giant resonance in /sup 142/Nd. Cross sections for the /sup 142/Nd(..gamma..,p)/sup 141/Pr and /sup 142/Nd(..gamma..,p/sub 0/ + p/sub 1/)/sup 141/Pr reactions were measured for excitation energies from 15.9 to 26.0 MeV. These cross sections are compared with previous /sup 141/Pr(p,..gamma../sub 0/)/sup 142/Nd data. The angular distributions for the larger resonances at 17.3, 19.7, and 22.9 MeV were measured. Analysis indicates that the 22.9-MeV state has about a 13% E2 component. The decay proton spectra from the 19.7- and 22.9-MeV resonances were analyzed with a schematic shell model and indicates that the core excitation process is dominant in these isobaric analog resonances. The measured (..gamma..,p) cross section together with the (..gamma..,n) cross section is found to be fairly consistent with the predictions of isospin splitting theory.

Research Organization:
Laboratory of Nuclear Science, Tohoku University, Tomizawa, Sendai, Japan
OSTI ID:
7082069
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 16:3; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651723* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Energy Levels & Transitions-- (-1987)
651725 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ELECTRON REACTIONS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
GIANT RESONANCE
INELASTIC SCATTERING
INTERMEDIATE MASS NUCLEI
ISOBARIC ANALOGS
ISOSPIN
ISOTOPES
LEPTON REACTIONS
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NEODYMIUM 142
NEODYMIUM 142 TARGET
NEODYMIUM ISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
PHOTONUCLEAR REACTIONS
PRASEODYMIUM 141
PRASEODYMIUM ISOTOPES
PROTON SPECTRA
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RESONANCE
RESONANCE SCATTERING
SCATTERING
SHELL MODELS
SPECTRA
STABLE ISOTOPES
TARGETS
TOTAL CROSS SECTIONS