Beta asymmetries in the decay of polarized /sup 56/Co

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

DOI:https://doi.org/10.1103/PhysRevC.32.1715· OSTI ID:6445392

Lee, W P; Sabbas, A M; Chen, M E; Kravitz, P S; Chirovsky, L M; Groves, J L; Wu, C S

Allowed isospin-hindered positron decay from polarized /sup 56/Co has been studied using a ..beta..-particle detection assembly mounted on a /sup 3/He//sup 4/He dilution refrigerator, and the asymmetry parameter was found to be A/sub ..beta../ = +0.359 +- 0.009. Assuming the standard V-A weak interaction theory and time-reversal invariance, the Fermi to Gamow-Teller interference ratio, y = C/sub V/M/sub F//C/sub A/M/sub GT/, is then -0.091 +- 0.005. Our high precision result is in reasonable agreement with most of the previously reported results, but is in serious disagreement with an earlier measurement by Pingot, who found y = +0.002 +- 0.004.

• Research Organization: Physics Department, Columbia University, New York, New York 10027
• OSTI ID: 6445392
• 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

651512* -- Nuclear Properties & Reactions
A=39-58
Theoretical-- Radioactive Decay-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
ANGULAR DISTRIBUTION
ASYMMETRY
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
COBALT 56
COBALT ISOTOPES
CORRELATIONS
DAYS LIVING RADIOISOTOPES
DECAY
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY-LEVEL TRANSITIONS
GAMMA RADIATION
GAMOW-TELLER RULES
INTERMEDIATE MASS NUCLEI
INVARIANCE PRINCIPLES
IONIZING RADIATIONS
ISOSPIN
ISOTOPES
NUCLEI
ODD-ODD NUCLEI
PARTICLE PROPERTIES
POLARIZATION
RADIATIONS
RADIOISOTOPES
T INVARIANCE