{gamma} decays of proton unbound levels in {sup 37}K

Journal Article · Mon May 01 04:00:00 EDT 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.51.2806· OSTI ID:44724

Magnus, P V; Adelberger, E G; Cabot, N ^[1]

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1. Nuclear Physics Laboratory GL-10, University of Washington, Seattle, Washington 98195 (United States)

Large discrepancies have been reported between the Gamow-Teller strengths determined from {sup 37}Ca {beta}-delayed proton decay, and the isospin-analog strengths deduced from {sup 37}Cl({ital p},{ital n}) studies. Some of these discrepancies could be removed if the {sup 37}Ca daughter level at 3.24 MeV in {sup 37}K had {Gamma}{sub {gamma}} forty times bigger than its {Gamma}{sub {ital p}}, and not negligibly small as assumed in the initial analysis of the {sup 37}Ca {beta} decay. We studied proton and {gamma}-ray branching ratios of low-lying {sup 37}K levels populated via the {sup 40}Ca({ital p},{alpha}) reaction. We find that the 3.24 MeV level has {Gamma}{sub {gamma}}/{Gamma}{sub {ital p}}{gt}8, and that the 2.75 and 3.08 MeV levels have {Gamma}{sub {gamma}}/{Gamma}{sub {ital p}}=0.52{plus_minus}0.23 and {Gamma}{sub {gamma}}/{Gamma}{sub {ital p}}=0.41{plus_minus}0.014, respectively. In addition we identified new {sup 37}K levels at {ital E}{sub {ital x}}=3.272{plus_minus}0.002 and 2.967{plus_minus}0.002 MeV.

• OSTI ID: 44724
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 51; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA PARTICLES
BETA DECAY
BRANCHING RATIO
CALCIUM 37
CALCIUM 40 TARGET
DELAYED PROTONS
GAMMA DECAY
GAMOW-TELLER RULES
POTASSIUM 37
PROTON REACTIONS