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Stabilization of prolate deformation at high spin in 75Kr

Steinhardt, T.; Eberth, J.; Skoda, S.; Thelen, O.; Schwengner, R.; Dönau, F.; Plettner, C.; Schnare, H.; de Angelis, G.; Napoli, D. R.; Farnea, E.; Gadea, A.; Jungclaus, A.; Lieb, K. P.; Wadsworth, R.

Abstract

The neutron-deficient nucleus 75Kr has been studied in two EUROBALL experiments. The analysis yielded a considerably extended level scheme including two newly observed excited high spin bands. The results are interpreted in the framework of the cranked Nilsson-Strutinsky approach. The calculations compare well to the experimentally established level scheme and predict the nucleus to be mainly prolate or triaxially deformed at high spin. Evidence for an oblate-prolate shape coexistence could not be found at high spin.

Keywords: Nuclear structure; silicon detectors; cranked Nilsson-Strutinsky model; neutron detectors; EUROBALL; HPGe detectors; gamma-ray spectroscopy

Permalink: https://www.hzdr.de/publications/Publ-17846