Short note
Firs t observation of excited states in the neutron-rich nucleus 138Te
F. Hoellinger1 - B.J.P. Gall1 - N. Schulz1 - W. Urban2 - I. Ahmad3 - M. Bentaleb1 - J.L. Durell4 - M.A. Jones4 - M. Leddy4 - E. Lubkiewicz5 - L.R. Morss3 - W.R. Phillips4 - A.G. Smith4 - B.J. Varley4
1 Institut de Recherches Subatomiques, UMR 7500, CNRS-IN2P3 et Université Louis Pasteur,
67037 Strasbourg, France
2 Institute of Experimental Physics, Warsaw University, 00-681 Warszawa, Poland
3 Argonne National Laboratory, Argonne, IL 60439
4 Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK
5 Department of Nuclear Physics, Jagiellonian University, 30-059 Cracow, Poland
Received: 21 September 1999 Communicated by D. Schwalm
Abstract
The very neutron-rich nucleus 138Te produced in the
spontaneous fission of 248Cm has been investigated using the EUROGAM II
-ray multidetector array. The excited states of 138Te observed
for the first time indicate that the region of ground state deformation beyond
the doubly magic nucleus 132Sn has yet not been reached.
PACS
23.20.Lv Gamma transitions and level energies -
25.85.Ca Spontaneous fission -
27.60.+j 90
A149
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