Hyperfine effect in [mu][sup [minus]] capture on [sup 23]Na and [ital g][sub [ital p]]/[ital g][sub [ital a]]

Journal Article · Mon May 30 00:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.3472· OSTI ID:7050313

Gorringe, T P; Johnson, B L; Armstrong, D S; Bauer, J; Kovash, M A; Hasinoff, M D; Measday, D F; Moftah, B A; Porter, R; Wright, D H ^[1]

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1. Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506 (United States) Department of Physics, University of California, Berkeley, California 94720 (United States) Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T 2A3 (Canada) TRIUMF, 4004 Wesbrook Mall, Vancouver, V6T 2A3 (Canada)

We report measurements of the rates and hyperfine (HF) dependences of [mu][sup [minus]] capture on [sup 23]Na, and the HF transition rate in Na metal. The measured capture rates are in general agreement with the predictions of the 1[ital s]-0[ital d] shell model. The measured HF dependences of the 1017 and 1823 keV [gamma] rays from [sup 23]Ne yield [ital g][sub [ital p]]/[ital g][sub [ital a]]=7.6[plus minus][sub 2.5][sup 2.1] and [ital g][sub [ital p]]/[ital g][sub [ital a]][le]7.1(1[sigma]), consistent with partial conservation of axial-vector current, but in disagreement with claims of an enhancement of [ital g][sub [ital p]]/[ital g][sub [ital a]] in light nuclei. The measured HF transition rate [Delta][sub [ital h]]=15.5[plus minus]1.1 [mu]s[sup [minus]1] is in agreement with the theory of Auger emission but twice the rate previously obtained in NaF ([ital a][similar to]3[sigma] effect).

• OSTI ID: 7050313
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:22; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
663210* -- Ground-State Radioactivity-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGEBRAIC CURRENTS
ALKALI METAL ISOTOPES
AXIAL-VECTOR CURRENTS
CAPTURE
CURRENTS
ELEMENTARY PARTICLES
FERMIONS
GOLDBERGER-TREIMAN RELATION
HYPERFINE STRUCTURE
ISOTOPES
LEPTONS
LIGHT NUCLEI
MUONS
MUONS MINUS
NUCLEI
ODD-EVEN NUCLEI
SODIUM 23
SODIUM ISOTOPES
STABLE ISOTOPES