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Phys. Rev. C 65, 034312 (2002) [8 pages]

Competition between terminating and collective structures above spin 40ħ in 154Dy

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W. C. Ma1, R. V. F. Janssens2, T. L. Khoo2, I. Ragnarsson3, M. A. Riley4, M. P. Carpenter2, J. R. Terry1, J. P. Zhang1, I. Ahmad2, P. Bhattacharyya5, P. J. Daly5, S. M. Fischer2, J. H. Hamilton6, T. Lauritsen2, D. T. Nisius2, A. V. Ramayya6, R. K. Vadapalli1, P. G. Varmette1, J. W. Watson1, C. T. Zhang5, and S. J. Zhu1,*
1Department of Physics, Mississippi State University, Mississippi State, Mississippi 39762
2Argonne National Laboratory, Argonne, Illinois 60439
3Department of Mathematical Physics, Lund Institute of Technology, S-22100 Lund, Sweden
4Department of Physics, Florida State University, Tallahassee, Florida 32306
5Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
6Department of Physics, Vanderbilt University, Nashville, Tennessee 37235

Received 12 October 2001; published 21 February 2002

High-spin states in 154Dy were studied with the Gammasphere spectrometer using the 36S(122Sn,4n) reaction. Band terminating states were identified in the spin range I=(36–48)ħ, and were found to compete with collective rotational cascades up to the highest observed spins. Several “sidebands” feeding the terminating structures were identified as well. A band dominated by M1 transitions was observed to terminate at Iπ=42-. The data are interpreted within the framework of configuration-dependent cranked Nilsson-Strutinsky calculations without pairing.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.034312
DOI:
10.1103/PhysRevC.65.034312
PACS:
21.10.Re, 23.20.Lv, 27.70.+q, 21.60.Ev

*On leave from Department of Physics, Tsinghua University, Beijing 100084, China.

 
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