Neutron single-particle energies in the $^{132}$Sn region

W. Urban; W. Kurcewicz; A. Nowak; T. Rząca-Urban; J.L. Durell; M.J. Leddy; M.A. Jones; W.R. Phillips; A.G. Smith; B.J. Varley; M. Bentaleb; E. Lubkiewicz; N. Schulz; J. Blomqvist; P.J. Daly; P. Bhattacharyya; C.T. Zhang; I. Ahmad; L.R. Morss

doi:doi:10.1007/s100500050280

EPJ

Neutron single-particle energies in the ¹³²Sn region

W. Urban¹ - W. Kurcewicz¹ - A. Nowak¹ - T. Rzaca-Urban¹ - J.L. Durell² - M.J. Leddy² - M.A. Jones² - W.R. Phillips² - A.G. Smith² - B.J. Varley² - M. Bentaleb³ - E. Lubkiewicz³ - N. Schulz³ - J. Blomqvist⁴ - P.J. Daly⁵ - P. Bhattacharyya⁵ - C.T. Zhang⁵ - I. Ahmad⁶ - L.R. Morss⁶

¹ Institute of Experimental Physics, Warsaw University, ul.Hoza 69, PL-00-681 Warszawa, Poland
² Schuster Laboratory, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK
³ Institut de Recherches Subatomiques, UMR7500, CNRS-IN2P3 et Université Louis Pasteur, F-67037 Strasbourg, France
⁴ Dept. of Physics Frescati, Royal Institute of Technology, S-10405 Stockholm, Sweden
⁵ Chemistry Department, Purdue University, West Lafayette, IN 47907, USA
⁶ Argonne National Laboratory, Argonne, IL 60439, USA

Received: 13 January 1999 / Revised version: 22 March 1999 Communicated by B. Povh

Abstract
Excited levels in ¹³³Sn and ¹³⁴Sb, populated in spontaneous fission of ²⁴⁸Cm, were studied by means of prompt- $\gamma$ spectroscopy, using the EUROGAM 2 multidetector array. The neutron i_13/2 single-particle energy has been determined for the first time in the ¹³²Sn region. The energy of the h_9/2 neutron level, proposed previously, has been confirmed.

PACS
21.60.Cs Shell model - 23.20.Lv Gamma transitions and level energies - 25.85.Ca Spontaneous fission - 27.60.+j $90 \le A \le 149$

Winter Workshop on Complex Systems
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Neutron single-particle energies in the 132Sn region

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Neutron single-particle energies in the ¹³²Sn region