Measurement of the l-forbidden Gamow-Teller branch of {sup 37}K

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.135· OSTI ID:549762

Hagberg, E; Towner, I S; Alexander, T K; Ball, G C; Forster, J S; Hardy, J C; Hykawy, J G; Koslowsky, V T; Savard, G ^[1]; Leslie, J R; Mak, H; Neeson, I ^[2]

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1. AECL, Chalk River Laboratories, Chalk River, Ontario, K0J 1J0 (CANADA)
2. Department of Physics, Queens University, Kingston, Ontario, K7L 3N6 (CANADA)

The {beta} decay of {sup 37}K is studied in detail. Several new {beta} decay branches and {gamma}-ray transitions are assigned to this nucleus. The l-forbidden 0d{sub 3/2}{r_arrow}1s{sub 1/2} Gamow-Teller branch to the first excited state in {sup 37}Ar is observed for the first time and its branching ratio measured to be (42.2{plus_minus}7.5){times}10{sup {minus}6}. Such l-forbidden branches are very sensitive to extranucleonic effects such as meson-exchange currents and {Delta}-isobar excitations. A calculation of these as well as core-polarization and relativistic effects, predict branching ratios of 8{times}10{sup {minus}6} with universal s-d wave functions and 52{times}10{sup {minus}6} with Chung-Wildenthal wave functions. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 549762
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 56; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON 37
BETA DECAY
BRANCHING RATIO
DELTA BARYONS
EXCHANGE INTERACTIONS
EXCITED STATES
GAMMA DECAY
GAMOW-TELLER RULES
MESONS
POLARIZATION
POTASSIUM 37
WAVE FUNCTIONS