Lifetime of the lowest 0+, T=1 state of Na22

B. T. Neyer, D. L. Clark, J. S. Dunham, W. A. Seale, J. L. Thornton, R. T. Westervelt, S. S. Hanna, B. A. Brown, and B. H. Wildenthal
Phys. Rev. C 35, 890 – Published 1 March 1987
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Abstract

The lifetime of the lowest 0+, T=1 state of Na22, which decays 100% to a lower 1+, T=0 state, has been measured by the recoil-into-plunger Doppler method. The result, τ=29.3±1.0 ps, gives the average τ=28.3±0.8 ps when combined with an earlier result. A comparison of the B(M1) extracted from this lifetime with the Gamow-Teller strength for the analog β decay from the ground state of Mg22 to the same 1+, T=0 state in Na22 shows that the orbital part of the M1 γ transition is greatly enhanced relative to the spin part. These results are interpreted in the context of realistic shell-model calculations for sd-shell nuclei.

  • Received 17 November 1986

DOI:https://doi.org/10.1103/PhysRevC.35.890

©1987 American Physical Society

Authors & Affiliations

B. T. Neyer, D. L. Clark, J. S. Dunham, W. A. Seale, J. L. Thornton, R. T. Westervelt, and S. S. Hanna

  • Department of Physics, Stanford University, Stanford, California 94305

B. A. Brown

  • National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824

B. H. Wildenthal

  • Department of Physics and Atmospheric Science, Drexel University, Philadelphia, Pennsylvania 19104

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Vol. 35, Iss. 3 — March 1987

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