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Direct. gamma. transitions in /sup 12/C+/sup 12/C

Journal Article · · Phys. Rev. C; (United States)
OSTI ID:6167319
; ; ; ;
Preliminary results of an experiment to detect ..gamma.. transitions between the high energy particle unstable structures known in the /sup 12/C+/sup 12/C system are reported. The specific process investigated is (/sup 12/C+/sup 12/C) 25.8 MeV(c.m.)..--> gamma..+(/sup 12/C+/sup 12/C) 19.3 MeV(c.m.)..--> gamma..+/sup 12/C+/sup 12/C (g.s. or 2/sup +/). The initial energy is near the center of the gross structure thought to have J/sup ..pi../ = 14/sup +/, and 19.3 MeV is the energy of the 12/sup +/ intermediate width resonance. An upper limit (one standard deviation) is found (GAMMA/sub ..gamma..//GAMMA)/sub 25.8tsMeV/< or approx. =(1 to 4) x 10/sup -6/ depending on the analysis procedure. This result shows there is no collective ..gamma.. decay between the intermediate width resonances at the energies studied here, and is comparable in size and consistent with resonance-fragmentation models but does not exclude nonresonant ones.
Research Organization:
Department of Physics, State University of New York, Stony Brook, New York 11794
OSTI ID:
6167319
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 24:5; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651325* -- Nuclear Properties &amp; Reactions
A=6-19
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
651423 -- Nuclear Properties &amp; Reactions
A=20-38
Experimental-- Energy Levels &amp; Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
CARBON 12 REACTIONS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DATA
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION FUNCTIONS
EXCITED STATES
EXPERIMENTAL DATA
FRAGMENTATION
FUNCTIONS
GAMMA SPECTRA
HEAVY ION REACTIONS
INFORMATION
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUMERICAL DATA
PARITY
PARTICLE PROPERTIES
ROTATIONAL STATES
SPECTRA
SPIN
TARGETS