High-spin states in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>109</mn></mrow></msup></mrow><mi mathvariant="normal">Te</mi><mo>:</mo></math></span> Competition between collective and single-particle excitations

A. J. Boston; E. S. Paul; C. J. Chiara; M. Devlin; D. B. Fossan; S. J. Freeman; D. R. LaFosse; G. J. Lane; M. Leddy; I. Y. Lee; A. O. Macchiavelli; P. J. Nolan; D. G. Sarantites; J. M. Sears; A. T. Semple; J. F. Smith; K. Starosta

doi:10.1103/PhysRevC.61.064305

High-spin states in $^{109} Te :$ Competition between collective and single-particle excitations

A. J. Boston, E. S. Paul, C. J. Chiara, M. Devlin, D. B. Fossan, S. J. Freeman, D. R. LaFosse, G. J. Lane, M. Leddy, I. Y. Lee, A. O. Macchiavelli, P. J. Nolan, D. G. Sarantites, J. M. Sears, A. T. Semple, J. F. Smith, and K. Starosta

Phys. Rev. C 61, 064305 – Published 10 May 2000

Abstract

High-spin states have been studied in neutron-deficient $_{52}^{109} Te,$ populated through the $^{58} Ni (^{58} Ni, α 2 p n)$ reaction at 250 MeV. The GAMMASPHERE $γ - ray$ spectrometer has been used in conjunction with the MICROBALL charged-particle detector and 15 neutron detectors in order to select weakly populated evaporation residues. New band structures have been established in $^{109} Te .$ Measured $B (E 1)$ strengths are discussed in terms of octupole correlations in this mass region. In addition, possible noncollective oblate states have been identified.

Received 10 January 2000

DOI:https://doi.org/10.1103/PhysRevC.61.064305

Authors & Affiliations

A. J. Boston¹, E. S. Paul^1,*, C. J. Chiara², M. Devlin^3,†, D. B. Fossan², S. J. Freeman⁴, D. R. LaFosse^3,‡, G. J. Lane^2,§, M. Leddy⁴, I. Y. Lee⁵, A. O. Macchiavelli⁵, P. J. Nolan¹, D. G. Sarantites³, J. M. Sears², A. T. Semple¹, J. F. Smith^2,∥, and K. Starosta²

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 Chemistry, Washington University, St. Louis, Missouri 63130
⁴Schuster Laboratory, University of Manchester, Brunswick Street, Manchester M13 9PL, United Kingdom
⁵Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720

^*Corresponding author. Electronic address: esp@ns.ph.liv.ac.uk
^†Present address: LANSCE-3, Los Alamos National Laboratory, Los Alamos, NM 87545.
^‡Present address: Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, NY 11794.
^§Present address: Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720.
^∥Present address: Schuster Laboratory, University of Manchester, Brunswick Street, Manchester M13 9PL, UK.

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Vol. 61, Iss. 6 — June 2000

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