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Phys. Rev. C 80, 051305(R) (2009) [5 pages]

Prompt γ-ray spectroscopy of isotopically identified fission fragments

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A. Shrivastava1,*, M. Caamaño1,†, M. Rejmund1, A. Navin1,‡, F. Rejmund1, K. -H. Schmidt1,2, A. Lemasson1, C. Schmitt1, L. Gaudefroy3, K. Sieja2,4, L. Audouin5, C. O. Bacri5, G. Barreau6, J. Benlliure7, E. Casarejos7, X. Derkx1, B. Fernández-Domínguez1, C. Golabek1, B. Jurado6, T. Roger1, and J. Taieb3
1GANIL, CEA/DSM—CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
2GSI-Helmholtzzentrum für Schwerionenforschung mbH, Planckstrasse 1, D-64220 Darmstadt, Germany
3CEA, DAM, DIF, F-91297 Arpajon, France
4Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
5Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris Sud, F-91406 Orsay, France
6Centre d’Etudes Nucléaires de Bordeaux Gradignan—UMR 5797, CNRS/IN2P3—Université Bordeaux 1, F-33175 Gradignan Cedex, France
7Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain

Received 8 October 2009; published 25 November 2009

Measurements of prompt Doppler-corrected deexcitation γ rays from uniquely identified fragments formed in fusion-fission reactions of the type 12C(238U,134Xe)Ru are reported. The fragments were identified in both A and Z using the variable-mode, high-acceptance magnetic spectrometer VAMOS. States built on the characteristic neutron configurations forming high-spin isomers (7- and 10+) in 134Xe are presented and compared with the predictions of shell-model calculations using a new effective interaction in the region of Z⩾50 and N⩽82.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.80.051305
DOI:
10.1103/PhysRevC.80.051305
PACS:
25.70.Jj, 23.20.Lv, 21.60.Cs, 27.60.+j

*Permanent address: Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India.

Present address: Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain.

navin@ganil.fr