Investigation of prolate-oblate shape-coexistence in $^{74}$Kr

F. Becker; W. Korten; F. Hannachi; P. Paris; N. Buforn; C. Chandler; M. Houry; H. Hübel; A. Jansen; Y. Le Coz; C.F. Liang; A. Lopez-Martens; R. Lucas; E. Mergel; P. H. Regan; G. Schönwasser; Ch. Theisen

doi:doi:10.1007/s100500050209

EPJ

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2022 Impact factor 2.7

Hadrons and Nuclei

Eur. Phys. J. A 4, 103-105

Short note

Investigation of prolate-oblate shape-coexistence in ⁷⁴Kr

F. Becker¹ - W. Korten¹ - F. Hannachi² - P. Paris² - N. Buforn¹ - C. Chandler⁴ - M. Houry¹ - H. Hübel³ - A. Jansen³ - Y. Le Coz¹ - C.F. Liang² - A. Lopez-Martens⁵ - R. Lucas¹ - E. Mergel³ - P. H. Regan⁴ - G. Schönwasser³ - Ch. Theisen¹

¹ DAPNIA/SPhN, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France
² CSNSM, IN2P3/CNRS, F-91405 Orsay, France
³ ISKP, Universität Bonn, Nussallee 14-16, D-53115 Bonn, Germany
⁴ Department of Physics, University of Surrey, Surrey GU2 5XH, UK
⁵ IReS Strasbourg, 23 Rue du Loess, F-67037 Strasbourg Cedex, France

Received: 16 November 1998 Communicated by B. Herskind

Abstract
The atomic nucleus ⁷⁴Kr has been investigated using combined conversion-electron (CE) and $\gamma$ -ray spectroscopy. In order to confirm the existence of the expected low-lying isomeric 0⁺₂ state, the possibility of an electric-monopole (E0) decay to the ground state was examined. The observation of an E0 transition at 508 keV allowed the determination of the mixing between coexisting prolate and oblate shapes.

PACS
21.10.Tg Lifetimes - 23.20.Lv Gamma transitions and level energies - 23.20.Nx Internal conversion and extranuclear effects - 25.70.Gh Compound nucleus - 27.50.+e 59 A 89