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Resonance structure of strength functions for first-forbidden β +/EC transitions

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Abstract

Experimental data obtained by measuring the fine structure of the strength function S β (E) in spherical and deformed nuclei were analyzed. The use of modern nuclear-spectroscopy methods made it possible to reveal the nuclear-deformation-induced splitting of peaks in S β (E) for transitions of the Gamow-Teller type. For first-forbidden transitions, the resonance nature of S β (E) was proven experimentally both for spherical and for deformed nuclei. It is shown that, at some values of the excitation energy, the intensity of first-forbidden transitions in nuclei can be commensurate with the intensity of Gamow-Teller transitions.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, Moscow oblast, 141980, Russia

    I. N. Izosimov, V. G. Kalinnikov & A. A. Solnyshkin

Authors
  1. I. N. Izosimov
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  2. V. G. Kalinnikov
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  3. A. A. Solnyshkin
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Correspondence to I. N. Izosimov.

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Original Russian Text © I.N. Izosimov, V.G. Kalinnikov, A.A. Solnyshkin, 2012, published in Yadernaya Fizika, 2012, Vol. 75, No. 11, pp. 1400–1405.

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Izosimov, I.N., Kalinnikov, V.G. & Solnyshkin, A.A. Resonance structure of strength functions for first-forbidden β +/EC transitions. Phys. Atom. Nuclei 75, 1324–1330 (2012). https://doi.org/10.1134/S1063778812110099

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  • DOI: https://doi.org/10.1134/S1063778812110099

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