Elsevier

Nuclear Physics A

Volume 512, Issue 1, 28 May 1990, Pages 1-45
Nuclear Physics A

Study of 110Cd by the 108Pd(α, 2nγ) reaction

https://doi.org/10.1016/0375-9474(90)90002-4Get rights and content

Abstract

The gamma-ray transitions following the 108Pd(α, 2n) reaction have been observed using different semiconductor detector systems, including a Compton suppression spectrometer. Approximately 200 transitions assigned to 110Cd were identified in the energy range 120 to 1600 keV. About 2.5 × 107 γγ-coincidence events were recorded and the angular distributions of most transitions were analyzed. The 110Cd level scheme was extended by 28 new levels. With the angular distribution results and a systematic use of the excitation slopes and of the side-feeding intensities (ESSI-method), the spins and parities of nearly all observed levels were determined. The results regarding the ground-state, intruder and octupole bands are interpreted in the framework of the s-p-d-f interacting boson model in which intruder mixing is explicitly included. The predictions of strong configuration mixing are also examined in detail in the neutron-proton interacting boson model framework. We shortly discuss possible non-collective, broken-pair excitations in a qualitative way.

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    Work supported in part by the Swiss National Science Foundation and by the Paul Scherrer Institute (PSI).

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