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Phys. Rev. Lett. 96, 042505 (2006) [4 pages]

Breakdown of K Selection in 178Hf

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A. B. Hayes1, D. Cline1, C. Y. Wu1, J. Ai2, H. Amro2, C. Beausang3, R. F. Casten2, J. Gerl4, A. A. Hecht2, A. Heinz2, R. Hughes2, R. V. F. Janssens5, C. J. Lister5, A. O. Macchiavelli6, D. A. Meyer2, E. F. Moore5, P. Napiorkowski7, R. C. Pardo5, Ch. Schlegel4, D. Seweryniak5, M. W. Simon1, J. Srebrny7, R. Teng1, K. Vetter6, and H. J. Wollersheim4
1Nuclear Structure Research Laboratory, Department of Physics, University of Rochester, Rochester, New York 14627, USA
2Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520, USA
3Physics Department, University of Richmond, Richmond, Virginia 23173, USA
4GSI, Gesellschaft für Schwerionenforschung, Planckstrasse 1, D-64291 Darmstadt, Germany
5Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
6Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
7Warsaw University, Warszawa, Poland

Received 24 June 2005; published 2 February 2006

Coulomb activation of the four quasiparticle Kπ=16+ 178Hf isomer (t1/2=31  y) has led to the measurement of a set of Eλ matrix elements coupling the isomer band to the ground band. The present data combined with earlier 178Hf Coulomb excitation data have probed the K components in the wave functions and revealed the onset and saturation of K mixing in low-K bands, whereas the mixing is negligible in the high-K bands. The implications can be applied to other quadrupole-deformed nuclei.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.042505
DOI:
10.1103/PhysRevLett.96.042505
PACS:
27.70.+q, 23.20.−g, 25.70.De
 
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