Elsevier

Nuclear Physics A

Volume 453, Issue 1, 12 May 1986, Pages 58-76
Nuclear Physics A

Low-energy collective E1 mode in nuclei

https://doi.org/10.1016/0375-9474(86)90029-1Get rights and content

Abstract

A theory is formulated for the collective enhancement of low-energy E1 transitions that has been observed in certain nuclei. The idea is to calculate an adiabatic isovector as well as isoscalar deformation. When this theory is applied to radium and light thorium nuclei, shell effects on the isovector E1 moment are found to explain the peculiar systematics of the E1 mode in this region.

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    1

    Permanent address: Institute of Physics, Technical University of Warsaw, Warsaw, Poland.

    2

    Present address: Department of Physics, Michigan State University, East Lansing, Michigan 48824, USA.

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