Coulomb activation of the four quasiparticle Kπ = 16+ 178Hf isomer (t 1/2 = 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.
Copyright © 2006 The American Physical Society. This article first appeared in Physical Review Letters 96, no. 4 (February 2, 2006): 042505: 1-42505: 4. doi:10.1103/PhysRevLett.96.042505.
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Hayes, A., D. Cline, C. Wu, J. Ai, H. Amro, C. Beausang, R. Casten, J. Gerl, A. Hecht, A. Heinz, R. Hughes, R. Janssens, C. Lister, A. Macchiavelli, D. Meyer, E. Moore, P. Napiorkowski, R. Pardo, Ch. Schlegel, D. Seweryniak, M. Simon, J. Srebrny, R. Teng, K. Vetter, and H. Wollersheim. "Breakdown of K Selection in Hf178." Physical Review Letters 96, no. 4 (February 2, 2006): 042505: 1-42505: 4. doi:10.1103/PhysRevLett.96.042505.