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Intermediate structure resonances in the inelastic scattering of /sup 12/C on /sup 16/O

Journal Article · · Phys. Rev., C; (United States)
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Excitation functions for inelastic scattering of /sup 12/C + /sup 16/O to the 2/sup +/ state in /sup 12/C at 4.43 MeV, the (3/sup -/,0/sup +/) doublet at 6.1 MeV and the (2/sup +/,1/sup -/) states at 7.0 MeV in /sup 16/O have been measured over the energy range 33 < or = E/sub lab/ < or = 54 MeV in 200 keV steps, at c.m. angles ranging from 100/sup 0/ to 165/sup 0/. Several new intermediate structure resonances are observed in the inelastic channels. A statistical analysis reveals strong correlations in angle and in exit channels. Complete elastic and inelastic angular distributions were measured at the energies of E/sub c.m./ = 13.6, 19.7, 20.5, 22.0, and 22.6 MeV as well as as at 21.3 MeV. Optical model fits to the elastic angular distributions result in the spin assignments J = 9/sup -/, 14/sup +/, and 15/sup -/ (16/sup +/) for the resonances at E/sub c.m./ = 13.6, 19.7, and 22.0 MeV, respectively. Partial widths are extracted from the data. The reduced widths of the inelastic channels are large, establishing their importance in the resonance mechanism. The results are compared to predictions of existing models, and it is found that a simple double-resonance model does not adequately describe the data.
Research Organization:
Department of Physics, State University of New York, Stony Brook, New York 11794
OSTI ID:
7021198
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:1; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651323* -- Nuclear Properties &amp; Reactions
A=6-19
Experimental-- Energy Levels &amp; Transitions-- (-1987)
651325 -- Nuclear Properties &amp; Reactions
A=6-19
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY LEVELS
ENERGY RANGE
EXCITATION FUNCTIONS
HEAVY ION REACTIONS
INELASTIC SCATTERING
INTERMEDIATE RESONANCE
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
OPTICAL MODELS
OXYGEN 16 REACTIONS
RESONANCE
SCATTERING
TARGETS