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Upper Limit on Parity Mixing in 21Ne

Snover, K. A. and von Lintig, R. and Adelberger, E. G. and Swanson, H. E. and Trainor, T. A. and McDonald, A. B. and Earle, E. D. and Barnes, C. A. (1978) Upper Limit on Parity Mixing in 21Ne. Physical Review Letters, 41 (3). pp. 145-148. ISSN 0031-9007. doi:10.1103/PhysRevLett.41.145.

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The parity-nonconserving circular polarization of γ rays from the 2.789 → 0.0 MeV transition in 21Ne is found to be (-9 ± 51) × 10^-4, which corresponds to a parity-mixing matrix element |〈HPNC〉|=0.009±0.054 eV between the 2.80-MeV, Jπ=1 / 2± levels. This value is considerably smaller than the measured parity mixing in the J=1/2 doublet in 19F.

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Additional Information:©1978 The American Physical Society. Received 12 May 1978. We thank B.H.J. McKellar for suggesting this experimen t and both McKellar and D.J. Millener for sending their results to us before publication. This work was supported in part by the U.S. Department of Energy and the National Science Foundation.
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Deposited On:01 Apr 2008
Last Modified:08 Nov 2021 21:04

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