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Parity-nonconservation effect in the helicities of conversion electrons accompanying the (5/2)− → (5/2)+ nuclear transition in the 229Pa nucleus

  • Nuclei
  • Theory
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Abstract

The ground state of the 229Pa nucleus is a 5/2± doublet with a splitting energy of 220±50 eV. Such levels are peculiar to nuclei in the mass region around A=225 that are characterized by octupole deformations. A direct observation of P-odd effects in this system is of great interest because this can furnish information about the parity-nonconserving nucleon-nucleon potential. The transition between the two doublet states of opposite parities proceeds predominantly through internal conversion; therefore, P-odd mixing can be explored by studying the helicities of the conversion electron. It is shown that the helicities of the 6s 1/2, 6p 1/2, and 6p 3/2 conversion electrons are about 1%, which makes it possible to perform experiments aimed at determining the parameters of the effective parity-nonconserving nuclear potential.

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Authors and Affiliations

  1. Russian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia

    D. P. Grechukhin & A. V. Lomonosov

Authors
  1. D. P. Grechukhin
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  2. A. V. Lomonosov
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__________

Translated from Yadernaya Fizika, Vol. 63, No. 5, 2000, pp. 793–798.

Original Russian Text Copyright © 2000 by Grechukhin, Lomonosov.

Deceased.

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Grechukhin, D.P., Lomonosov, A.V. Parity-nonconservation effect in the helicities of conversion electrons accompanying the (5/2)− → (5/2)+ nuclear transition in the 229Pa nucleus. Phys. Atom. Nuclei 63, 724–728 (2000). https://doi.org/10.1134/1.855698

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  • DOI: https://doi.org/10.1134/1.855698

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