Abstract
Values or upper limits for the radiative widths of 12 primaryE2 transitions observed in thermal neutron capture for nuclei with 144≦A≦180 are presented. The results are compared with the predictions of the Axel-Brink hypothesis using the systematics of the isoscalar and isovector quadrupole resonances. The strengths are on the average lower than expected. Analysis of previously reported average resonance data results in the same conclusion.
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The authors gratefully acknowledge the financial assistance of the Natural Sciences and Engineering Research Council of Canada, the government of Ontario, and the Canadian Commonwealth Scholarship and Fellowship Administration. They also wish to thank M.A. Lone for his valuable comments.
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Prestwich, W.V., Islam, M.A. & Kennett, T.J. PrimaryE2 transitions observed following neutron capture for the mass region 144≦A≦180. Z Physik A 315, 103–111 (1984). https://doi.org/10.1007/BF01436215
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DOI: https://doi.org/10.1007/BF01436215