High-fold <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>γ</mi></math></span>-ray spectroscopy of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>117</mn></mrow></msup></mrow><mi mathvariant="normal">I</mi></math></span>: Coexistence of collective and noncollective structures

E. S. Paul; D. B. Fossan; K. Hauschild; I. M. Hibbert; P. J. Nolan; H. Schnare; J. M. Sears; I. Thorslund; R. Wadsworth; A. N. Wilson; J. N. Wilson; I. Ragnarsson

doi:10.1103/PhysRevC.59.1984

High-fold $γ$ -ray spectroscopy of $^{117} I$ : Coexistence of collective and noncollective structures

E. S. Paul, D. B. Fossan, K. Hauschild, I. M. Hibbert, P. J. Nolan, H. Schnare, J. M. Sears, I. Thorslund, R. Wadsworth, A. N. Wilson, J. N. Wilson, and I. Ragnarsson

Phys. Rev. C 59, 1984 – Published 1 April 1999

Abstract

High-spin states have been populated in $_{53}^{117} I$ via the $^{90} Zr (^{31} P, 2 p 2 n)$ reaction at 150 MeV, using the EUROGAM II $γ$ -ray spectrometer to record high-fold $γ$ -ray coincidences. A quadruples $γ$ -ray analysis $(γ^{4})$ has been used to extend the known level scheme. In addition to several aligned noncollective states, a new high-spin band showing characteristics of smooth termination has been established at and linked into the low-spin level scheme. Its structure has been inferred through comparison with cranked Nilsson-Strutinsky calculations.

Received 3 December 1998

DOI:https://doi.org/10.1103/PhysRevC.59.1984

Authors & Affiliations

E. S. Paul¹, D. B. Fossan², K. Hauschild^3,*, I. M. Hibbert^3,†, P. J. Nolan¹, H. Schnare^2,‡, J. M. Sears², I. Thorslund², R. Wadsworth², A. N. Wilson^1,§, J. N. Wilson^1,∥, and I. Ragnarsson⁴

¹Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 7ZE, United Kingdom
²Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York 11794
³Department of Physics, University of York, Heslington, York YO1 5DD, United Kingdom
⁴Department of Mathematical Physics, University of Lund, P.O. Box 118, S-22100 Lund, Sweden

^*Present address: Lawrence Livermore National Laboratory, P.O. Box 808, L-280, Livermore, CA 94550.
^†Present address: Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L69 7ZE, United Kingdom.
^‡Present address: Institut für Kern- und Teilchenphysik, TU Dresden, Mommsenstr. 13, D-01062 Dresden, Germany.
^§Present address: Department of Physics, University of York, Heslington, York YO1 5DD, United Kingdom.
^∥Present address: Department of Chemistry, Washington University, St. Louis, MO 63130.

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