Evidence for a highly deformed oblate <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo></mrow></msup></mrow></math></span> state in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msubsup><mrow></mrow><mrow><mn>36</mn></mrow><mrow><mn>74</mn></mrow></msubsup></mrow><mi mathvariant="normal">Kr</mi></math></span>

C. Chandler; P. H. Regan; C. J. Pearson; B. Blank; A. M. Bruce; W. N. Catford; N. Curtis; S. Czajkowski; W. Gelletly; R. Grzywacz; Z. Janas; M. Lewitowicz; C. Marchand; N. A. Orr; R. D. Page; A. Petrovici; A. T. Reed; M. G. Saint-Laurent; S. M. Vincent; R. Wadsworth; D. D. Warner; J. S. Winfield

doi:10.1103/PhysRevC.56.R2924

Rapid Communication

Evidence for a highly deformed oblate $0^{+}$ state in $_{36}^{74} Kr$

C. Chandler, P. H. Regan, C. J. Pearson, B. Blank, A. M. Bruce, W. N. Catford, N. Curtis, S. Czajkowski, W. Gelletly, R. Grzywacz, Z. Janas, M. Lewitowicz, C. Marchand, N. A. Orr, R. D. Page, A. Petrovici, A. T. Reed, M. G. Saint-Laurent, S. M. Vincent, R. Wadsworth, D. D. Warner, and J. S. Winfield

Phys. Rev. C 56, R2924(R) – Published 1 December 1997

Abstract

We present the observation of an isomeric decay in the very neutron deficient nucleus $_{36}^{74} Kr .$ The isomer is interpreted as an excited 0 $^{+}$ state, consistent with the long standing prediction of high deformation prolate/oblate shape coexistence in this nucleus. The magnitude of the $E 0$ matrix element deduced for the $0_{2}^{+} \to 0_{1}^{+}$ transition gives strong support to the prediction of a highly deformed oblate rotor.

Received 28 May 1997

DOI:https://doi.org/10.1103/PhysRevC.56.R2924

Authors & Affiliations

C. Chandler¹, P. H. Regan¹, C. J. Pearson¹, B. Blank², A. M. Bruce³, W. N. Catford¹, N. Curtis¹, S. Czajkowski², W. Gelletly¹, R. Grzywacz^4,5, Z. Janas^2,4, M. Lewitowicz⁵, C. Marchand², N. A. Orr⁶, R. D. Page⁷, A. Petrovici⁸, A. T. Reed⁷, M. G. Saint-Laurent⁵, S. M. Vincent¹, R. Wadsworth⁹, D. D. Warner¹⁰, and J. S. Winfield⁵

¹Department of Physics, University of Surrey, Guildford, GU2 5XH, United Kingdom
²CEN Bordeaux-Gradignan, Le Haut-Vigneau, F-33175 Gradignan Cedex, France
³Cockcroft Building, University of Brighton, Brighton, BN2 4GJ, United Kingdom
⁴Institute of Experimental Physics, Warsaw University, Pl-00681, Warsaw, Poland
⁵GANIL, BP 5027, F-14000, Caen Cedex, France
⁶LPC, IN2P3-CNRS, ISMRA et Université de Caen, Bld. du Marechal Juin, F-14050, Caen Cedex, France
⁷Oliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
⁸Institute for Physics and Nuclear Engineering, PO Box MG-6, R-76900 Bucharest-Magurele, Romania
⁹Department of Physics, University of York, Heslington, York Y01 4DD, United Kingdom
¹⁰CCLRC Daresbury Laboratory, Warrington WA4 4AD, United Kingdom

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Vol. 56, Iss. 6 — December 1997

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