Competition between terminating and collective structures above spin <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>40</mn><mi>ħ</mi></math></span> in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>154</mn></mrow></msup></mrow><mi mathvariant="normal">Dy</mi></math></span>

W. C. Ma; R. V. F. Janssens; T. L. Khoo; I. Ragnarsson; M. A. Riley; M. P. Carpenter; J. R. Terry; J. P. Zhang; I. Ahmad; P. Bhattacharyya; P. J. Daly; S. M. Fischer; J. H. Hamilton; T. Lauritsen; D. T. Nisius; A. V. Ramayya; R. K. Vadapalli; P. G. Varmette; J. W. Watson; C. T. Zhang; S. J. Zhu

doi:10.1103/PhysRevC.65.034312

Competition between terminating and collective structures above spin $40 ħ$ in $^{154} Dy$

W. C. Ma, R. V. F. Janssens, T. L. Khoo, I. Ragnarsson, M. A. Riley, M. P. Carpenter, J. R. Terry, J. P. Zhang, I. Ahmad, P. Bhattacharyya, P. J. Daly, S. M. Fischer, J. H. Hamilton, T. Lauritsen, D. T. Nisius, A. V. Ramayya, R. K. Vadapalli, P. G. Varmette, J. W. Watson, C. T. Zhang, and S. J. Zhu

Phys. Rev. C 65, 034312 – Published 21 February 2002

Abstract

High-spin states in $^{154} Dy$ were studied with the Gammasphere spectrometer using the $^{36} S (^{122} Sn, 4 n)$ 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 $M 1$ transitions was observed to terminate at $I^{π} {= 42}^{-} .$ The data are interpreted within the framework of configuration-dependent cranked Nilsson-Strutinsky calculations without pairing.

Received 12 October 2001

DOI:https://doi.org/10.1103/PhysRevC.65.034312

Authors & Affiliations

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. Zhu^1,*

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

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

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Vol. 65, Iss. 3 — March 2002

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