Nonequilibrium population of magnetic substates and excitation-energy division in the decay of an orbiting complex

Journal Article · Mon Aug 18 04:00:00 EDT 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.57.815· OSTI ID:5134899

Ray, A; Leach, D D; Vandenbosch, R; Lesko, K T; Shapira, D

..gamma..-ray angular correlations have been measured for the strongly damped reaction /sup 12/C(/sup 28/Si,/sup 12/C)/sup 28/ Si at theta/sub c.m./ = 180/sup 0/ for E/sub c.m./ = 42.7 and 33.7 MeV. The /sup 12/C (4.44 MeV, J/sup ..pi../ = 2/sup +/) state is found to be produced almost exclusively in the m = 0 magnetic substate with respect to the beam axis. Comparison of singles and coincidence yields shows that the /sup 12/C comes out in its ground state most of the time (approx. =70%) resulting in the entire excitation energy approx. =(15--20) MeV appearing in /sup 28/Si. These results can be reproduced by a constrained phase-space calculation.

• Research Organization: Nuclear Physics Laboratory (GL-10), University of Washington, Seattle, Washington 98195
• OSTI ID: 5134899
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:7; ISSN PRLTA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
ANGULAR MOMENTUM
BACKSCATTERING
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
CORRELATIONS
DATA
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
GAMMA RADIATION
HEAVY ION REACTIONS
INELASTIC SCATTERING
INFORMATION
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
PARITY
PARTICLE PROPERTIES
PHASE SPACE
RADIATIONS
SCATTERING
SILICON 28
SILICON 28 REACTIONS
SILICON ISOTOPES
SPACE
SPIN
STABLE ISOTOPES
STATISTICAL MODELS
TARGETS