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Spin and isospin transfer in the /sup 12/C(. pi. /sup +/,. pi. /sup +/') reaction. [100 to 291 MeV]

Journal Article · · Phys. Rev., C; (United States)
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Inelastic scattering cross sections from /sup 12/C were measured for the 12.7 MeV (1/sup +/;0), 15.1 MeV (1/sup +/;1), and 16.1 MeV (2/sup +/;1) levels for positive pion beam energies of 100, 116, 140, 160, 180, 200, 230, 260, and 291 MeV. Clearly oscillatory angular distributions were measured for the 1/sup +/ states, and these are shown to be explained by very general considerations of the scattering amplitudes. The 16.1 MeV data show little structure at the lower beam energies, but the falling angular dependence at the higher beam energies is very like that observed for the 4.4 MeV (2/sup +/;0) state. A prediction for the ratio of the T=0 and T=1 1/sup +/ cross sections is derived from a specific two-step calculation, and found to agree with the data at the 3-3 resonance.
Research Organization:
Nuclear Physics Laboratory, Department of Physics and Astrophysics, University of Colorado, Boulder, Colorado 80309
OSTI ID:
5612710
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 21:3; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
CARBON 12
CARBON 12 TARGET
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
HADRON REACTIONS
INELASTIC SCATTERING
ISOSPIN
ISOTOPES
LIGHT NUCLEI
MATRIX ELEMENTS
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEI
PARITY
PARTICLE PROPERTIES
PION PLUS REACTIONS
PION REACTIONS
SCATTERING
SCATTERING AMPLITUDES
SINGLE-PARTICLE MODEL
SPECTROSCOPIC FACTORS
SPIN
STABLE ISOTOPES
TARGETS