L-forbidden Gamow-Teller {beta} decay of {sup 57}Cu

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.53.96· OSTI ID:283701

Semon, D R; Allen, M C; Dejbakhsh, H; Gagliardi, C A; Hale, S E; Jiang, J; Trache, L; Tribble, R E; Yennello, S J; Xu, H M; Zhou, X G ^[1]; Brown, B A ^[2]

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1. Cyclotron Institute and Department of Physics, Texas A&M University, College Station, Texas 77843 (United States)
2. Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)

Absolute branching ratios for the {beta} decay of {sup 57}Cu to excited states up to 3.3 MeV in {sup 57}Ni have been determined, including the l-forbidden Gamow-Teller transition to the first excited state in {sup 57}Ni. Four transitions to excited states at 0.768, 1.113, 2.443, and 3.007 MeV are observed in addition to the superallowed decay to the ground state of {sup 57}Ni. The measured branching ratio to the ground state is 89.9 {plus_minus} 0.8{percent} and the branching ratios to the four excited states are 0.94 {plus_minus} 0.09{percent}, 8.6 {plus_minus} 0.6{percent}, 0.17 {plus_minus} 0.03{percent}, and 0.35 {plus_minus} 0.04{percent}, respectively. In addition we have measured the {sup 57}Cu half-life and find it to be 196.3 {plus_minus} 0.7 ms, which is in good agreement with the most recent measurement. {ital B}(GT) values have been extracted from the new results and are compared to shell model calculations. {copyright} {ital 1996 The American Physical Society.}

• DOE Contract Number: FG03-93ER40773
• OSTI ID: 283701
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 53; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BETA DECAY
BRANCHING RATIO
COPPER 57
EXCITED STATES
GAMOW-TELLER RULES
GROUND STATES
HALF-LIFE
NICKEL 57
SHELL MODELS