Elsevier

Nuclear Physics

Volume 32, April–May 1962, Pages 652-668
Nuclear Physics

Coulomb excitation of the first 2+ state of even nuclei with 58 ≦ A ≦ 82

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Abstract

The yields of gamma rays resulting from Coulomb excitation have been measured for fifteen even nuclei of nickel, zinc, germanium and selenium. Coulomb excitation was produced by variable energy α-particles (3 to 10 MeV). In favourable cases the absolute γ-ray yields are determined to an accuracy of ±4 %. The reduced electric quadrupole transition probabilities B(E2) are generally determined to an accuracy of ±9 % . The observed values for B(E2)are larger than the single-particle estimate by factors ranging from 11 for Ni58 to 51 for Se76. The 2+ energies and B(E2) values are interpreted in terms of the collective vibrational model.

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