Excitation of unnatural-parity states in /sup 12/C by 800-MeV polarized protons

Journal Article · Mon May 05 00:00:00 EDT 1980 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.44.1189· OSTI ID:5426221

Moss, J M; Glashausser, C; Baker, F T; Boudrie, R; Cornelius, W D; Hintz, N; Hoffmann, G W; Kyle, G; Love, W G; Scott, A; Thiessen, H A

Cross sections and analyzing powers have been measured for 800-MeV proton inelastic transitions to unnatural-parity states in /sup 12/C. Data for the 15.11-MeV 1/sup +/, T=1 state are well explained by a distorted-wave impulse-approximation calculation based on proton-neutron charge-exchange cross sections. Negative analyzing powers were observed for the first time at 800 MeV, for the 12.71-MeV 1/sup +/, T=0 state. Values of A/sub y/ appear to be characteristic of the isospin transfer, and support isospin assignments for states of 18.3 and 19.4 MeV.

• Research Organization: Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87545
• OSTI ID: 5426221
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 44:18; ISSN PRLTA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYON REACTIONS
BEAMS
CARBON 12
CARBON 12 TARGET
CARBON ISOTOPES
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
HADRON REACTIONS
IMPULSE APPROXIMATION
INELASTIC SCATTERING
ISOSPIN
ISOTOPES
LIGHT NUCLEI
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
POLARIZED BEAMS
PROTON REACTIONS
SCATTERING
SPIN
STABLE ISOTOPES
TARGETS