| Abstrakt: |
Excited states of73Se have been investigated up to spin, 21/2 using techniques of in-beam?-ray spectroscopy in connection with the70Ge(a, n) reaction. Mean lifetimes of 12 levels have been determined applying Doppler-shift and?-RF-methods. Five different bands have been identified that reflect a variety of different excitation modes. The decoupled 9/2+ band is likely to correspond to an oblate deformation while the 5/2+ band is interpreted as a strongly coupled prolate band built on the Nilsson configuration [422] 5/2+. The 3/2- band is a strongly coupled band built on the [301] 3/2} configuration.Nuclear reactions:70Ge(a,n),E=14, 16, 18, 19, 20MeV; measuredE?,I?,s(E?,?),??-coin, linear polarization, DSA,?(t).75Se deduced levels,I, p, t, d(E2/M1), B(s?). Enriched targets, Ge detectors. |
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