Abstract
High-spin states in187Au have been populated in the172Yb(19F, 4n) reaction and studied with in-beam spectroscopic techniques using the “Château de Cristal” 4π-multidetector array. A comprehensive level scheme of187Au has been established. Experimental band crossing frequencies and gains in alignment were deduced. Shape coexistence in187Au, well established at low spin, is found to survive up to spin 57/2, and manifests itself through well separated oblate and prolate structures.
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We would like to acknowledge the technical support of the MP Tandem staff of the CRN Strasbourg. We are especially indebted to D. Sznajderman of IPN Orsay for preparing the Yb targets.