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Phys. Rev. C 62, 044314 (2000) [9 pages]

Separation of isoscalar, isovector, orbital, and spin contributions in M1 transitions in mirror nuclei

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Y. Fujita1 *, B. A. Brown2, H. Ejiri3,4, K. Katori1, S. Mizutori1, and H. Ueno1
1Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
2National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
3Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
4Nuclear Physics Laboratory, University of Washington, Seattle, Washington 98195

Received 22 February 2000; published 15 September 2000

Experimental data for M1 matrix elements in the T=1/2 mirror nuclei 27Al and 27Si are used to determine the isoscalar and isovector M1 components. The obtained isovector M1 matrix elements are compared to the Gamow-Teller matrix elements deduced from β decay and the 27Al(3He,t)27Si charge exchange reaction to determine the contributions of the isovector spin and orbital components. The exchange current effects are taken into account. The results are compared with shell model calculations.


©2000 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.62.044314
DOI: 10.1103/PhysRevC.62.044314
PACS: 21.90.+f, 23.20.Js, 23.40.Hc, 27.30.+t

* Electronic address: fujita@rcnp.osaka-u.ac.jp

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