Isospin mixing in the T=5/2 ground state of As71

N. Severijns,D. Vénos,P. Schuurmans,T. Phalet,M. Honusek,D. Srnka,B. Vereecke,S. Versyck,D. Zákoucký,U. Köster,M. Beck,B. Delauré,V. Golovko,I. Kraev

PHYSICAL REVIEW C（2005）

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摘要

The presence of isospin mixing in the T=5/2 ground state of As-71 was studied via anisotropic positron emission from oriented nuclei. A small isospin-forbidden Fermi component in the predominantly Gamow-Teller beta decay was established, corresponding to an isospin mixing probability of (13 +/- 4)x10(-6). The sign of the magnetic moment of As-71 was determined to be positive.

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