Elsevier

Nuclear Physics A

Volume 297, Issue 1, 6 March 1978, Pages 51-60
Nuclear Physics A

Coulomb excitation of vibrational-like states in 166−170Er

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Abstract

Direct E2 and E3 Coulomb excitation of 2+ and 3 states with 14 MeV 4He ions on isotopically enriched targets of 166Er, 168Er and 170Er has been measured by means of γ-ray spectroscopy. Several 2+ states and 3 octupole vibrational states were identified in each nucleus. The B(Eλ, 0 → J = λ) is obtained for excitation of each state, and information is given on the reduced transition probabilities for the different decay modes of these states. The experimental results are compared with theoretical predictions of nuclear models describing these states.

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Research sponsored by the US Energy Research and Development Administration under contract with Union Carbide Corporation.

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