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Photodisintegration of quasi-alpha-particles in the nuclei /sup 6,7/Li by. gamma. rays with E/sub. gamma. /=35--55 MeV

Journal Article · · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)
OSTI ID:6442965
; ; ; ; ; ; ;
Results are presented of an experimental study of reactions of the type /sup 6,7/Li (..gamma.., ab) X with emission of charged particles a and b detected in coincidence. It is established that the major part of such reactions are reactions of the type /sup 6,7/Li (..gamma..,pt) X. The results of measurement of the correlations of the directions of emission and energy distributions of protons and tritons are explained on the basis of the assumption of photodisintegration of ..cap alpha.. clusters in the ground state of the nuclei /sup 6,7/Li into a proton and triton and of formation of the residues X in the form of two (d+n) particles in reactions /sup 6/Li (..gamma.., pt) X, and two (d+n) particles and possibly three (n+p+n) particles in reactions /sup 7/Li (..gamma.., pt) X. The value of the average differential cross section of the reaction /sup 6/Li (..gamma.., pt) /sup 1/Hn in the ..gamma..-ray energy interval 35--55 MeV amounts to 0.7 +- 0.2 of the value of the cross section for the reaction /sup 4/He (..gamma.., p) /sup 3/H. It is shown that in addition, three-particle reactions of the type /sup 6/Li (..gamma..,td) /sup 1/H and /sup 7/Li (..gamma.., tt) /sup 1/H occur, but with a kinematics differing from that of the photodisintegration of ..cap alpha.. clusters, and also two-particle reactions of the type /sup 6/Li (..gamma.., t) /sup 3/He and /sup 7/Li (..gamma.., t) /sup 4/He.
Research Organization:
Leningrad Institute of Nuclear Physics, USSR Academy of Sciences
OSTI ID:
6442965
Journal Information:
Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 27:4; ISSN SJNCA
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
BARYONS
BREAKUP REACTIONS
CHARGED PARTICLES
CLUSTER MODEL
CORRELATIONS
CROSS SECTIONS
DATA
DATA FORMS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
EXPERIMENTAL DATA
FERMIONS
GRAPHS
HADRONS
INFORMATION
KINETICS
LITHIUM 6 TARGET
LITHIUM 7 TARGET
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NUCLEAR MODELS
NUCLEAR REACTION KINETICS
NUCLEAR REACTIONS
NUCLEONS
NUMERICAL DATA
PHOTONUCLEAR REACTIONS
PROTONS
REACTION KINETICS
SPECTRA
TARGETS
TRITONS