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Projectile-breakup and transfer-reemission reactions in the /sup 12/C+/sup 20/Ne system

Journal Article · · Phys. Rev. C; (United States)
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The /sup 12/C(/sup 20/Ne,..cap alpha.. /sup 16/O/sub g//sub .//sub s//sub .//sup 12/C/sub g//sub .//sub s/., /sup 12/C(/sup 20/Ne,..cap alpha.. /sup 20/Ne)/sup 8/Be/sub g.s./, and /sup 12/C(/sup 20/Ne,..cap alpha.. /sup 12/C)/sup 16/O/sup */ reactions at E( /sup 20/Ne) = 157 MeV were studied by using position-sensitive telescopes. It was established that ..cap alpha..-/sup 16/O coincidences in the first reaction result not only from sequential breakup of the projectile, but also from the transfer-reemission process /sup 12/C/sub g.s./C(/sup 20/Be,/sup 16/O/sub g.s./)/sup 16/O/sup */..--> cap alpha..+ /sup 12/ Distributions of the excitation energy in the primary reaction products were deduced by calculating respective branching ratios with a Hauser-Feshbach statistical-decay code. It was found that excitation energy is generated in mass transfer reactions quite asymmetrically: it is mostly concentrated in the nucleus that acquires mass, while the ''donor'' nucleus, on the average, remains cold. These results clearly support the basic concept of ''spectator'' models of heavy-ion reactions.

Research Organization:
Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
OSTI ID:
6004053
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 35:4; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
ALPHA PARTICLES
ALPHA-TRANSFER REACTIONS
ANGULAR DISTRIBUTION
BERYLLIUM 8
BERYLLIUM ISOTOPES
BRANCHING RATIO
BREAKUP REACTIONS
CARBON 12 TARGET
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
DIRECT REACTIONS
DISTRIBUTION
ENERGY
ENERGY RANGE
EVEN-EVEN NUCLEI
FOUR-NUCLEON TRANSFER REACTIONS
HAUSER-FESHBACH THEORY
HEAVY ION REACTIONS
INELASTIC SCATTERING
ISOTOPES
KINETIC ENERGY
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
MULTI-NUCLEON TRANSFER REACTIONS
NEON 20 REACTIONS
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEI
OXYGEN 16
OXYGEN ISOTOPES
RADIOISOTOPES
SCATTERING
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
STATISTICAL MODELS
TARGETS
TRANSFER REACTIONS