Beta-delayed proton decays of /sup 27/P and /sup 31/Cl: Gamow-Teller decays with large Q values

Journal Article · Fri Nov 01 04:00:00 EST 1985 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.32.1700· OSTI ID:6196655

Aysto, J; Xu, X J; Moltz, D M; Reiff, J E; Cerny, a J; Wildenthal, B H

The beta-delayed proton emissions of the odd-Z, T/sub z/ = -(3/2) nuclei /sup 27/P and /sup 31/Cl have been studied. This work represents the first observation of the decay of /sup 27/P, yielding a half-life of 260 +- 80 ms, and completes the series of beta-delayed proton emitters with T/sub z/ = -(3/2) in the sd shell. Several new proton groups were attributed to the decay of /sup 31/Cl; their half-lives are consistent with a previous observation. The estimated logft values of the observed transitions for both /sup 27/P and /sup 31/Cl are consistent with clustering of the beta strength above the isobaric analog states in the daughter nuclei as predicted by a complete (1s,0d)-space shell-model calculation. The observed half-lives are in good agreement with the shell-model predictions which include a quenching of the Gamow-Teller strength by a factor of 0.6, in accordance with earlier observations.

• Research Organization: Department of Chemistry and Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6196655
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 32:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651422* -- Nuclear Properties & Reactions
A=20-38
Experimental-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
CHLORINE 31
CHLORINE ISOTOPES
COMPOUND-NUCLEUS REACTIONS
DECAY
DELAYED PROTONS
ELEMENTARY PARTICLES
ENERGY
ENERGY LEVELS
FERMIONS
FT VALUE
FUNCTIONS
GAMOW-TELLER RULES
HADRON REACTIONS
HADRONS
HALF-LIFE
ISOBARIC ANALOGS
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
ODD-EVEN NUCLEI
PHOSPHORUS 27
PHOSPHORUS ISOTOPES
PROTON REACTIONS
PROTONS
Q-VALUE
SHELL MODELS
SILICON 28 TARGET
SULFUR 32 TARGET
TARGETS
WAVE FUNCTIONS