Gamow-Teller decay of the T=1 nucleus {sup 46}Cr

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.024308· OSTI ID:20698895

Onishi, T K; Sakurai, H; Imai, N; Ichikawa, Y; Iwasaki, H; Ong, H J; Osada, M; Otsuka, T; Suzuki, M K; Ue, K ^[1]; Gelberg, A ^[2]; Yoneda, K; Aoi, N; Fukuda, N; Ishihara, M; Kishida, T; Watanabe, H ^[3]; Baba, H ^[4]; Brentano, P von ^[2]; Kameda, D ^[5]

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1. Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113-0033 Tokyo (Japan)
2. Institut fuer Kernphysik der Universitaet zu Koeln, D-50937 Cologne (Germany)
3. Institute of Physical and Chemical Research (RIKEN), Hirosawa 2-1, Wako-shi, 351-0198 (Japan)
4. Department of Physics, Rikkyo University, Nishi-Ikebukuro 3-34-1, Toshima, Tokyo (Japan)
5. Department of Physics, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro, Tokyo (Japan); and others

The Gamow-Teller {beta} decay of {sup 46}Cr to the N=Z odd-odd nucleus {sup 46}V has been observed for the first time. {sup 46}Cr was produced by the fragmentation of a {sup 50}Cr primary beam at 80 MeV/nucleon. By means of {beta}-{gamma} coincidence measurements, a {gamma}-ray peak at 993 keV corresponding to the decay of the 1{sub 1}{sup +} state in {sup 46}V was observed. The branching ratio of the Gamow-Teller decay to this state was found to be b{sub GT}=0.216{+-}0.050. The half-life of {sup 46}Cr was measured to be T{sub 1/2}=240{+-}140 ms. The transition strength was determined to be B(GT)=0.64{+-}0.20. This result was compared with theoretical values calculated with the shell model and the phenomenological quasideuteron model.

• OSTI ID: 20698895
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BRANCHING RATIO
CHROMIUM 46
CHROMIUM 50
GAMMA SPECTRA
GAMOW-TELLER RULES
HALF-LIFE
KEV RANGE
MEV RANGE
NUCLEAR FRAGMENTATION
NUCLEONS
PARITY
PROBABILITY
SHELL MODELS
SPIN
VANADIUM 46