High-spin states in Te-124

Publication Type
Journal Article
Year of Publication
Fotiades, N.
Cizewski, J. A.
Krucken, R.
Clark, R. M.
Fallon, P.
Lee, I. Y.
Macchiavelli, A. O.
Younes, W.
Name of Publication
Physical Review C
Date Published
Short Title
High-spin states in Te-124
Accession Number
ISBN Number

In even-mass Te isotopes with 114 <= A <= 122 the experimentally observed yrast I-pi = 16(+) states have been interpreted as favored noncollective oblate states based on the fully aligned pi[(g(7/2))(2)](6+) circle times v[(h(11/2))(2)](10+) configuration. For Te-124 the highest-spin positive-parity state known has I-pi = 10(+). An extension of the yrast cascade of Te-124 is needed to spin at least 16(+) in order to answer the question of whether this noncollective oblate state lies along the yrast line in this isotope. The level structure of 124Te has been studied via prompt gamma-ray spectroscopy. Te-124 was produced in the fission of the compound systems formed in two heavy-ion-induced reactions, Mg-24 (134.5 MeV) + Yb-173 and Na-23 (129 MeV) + Yb-176. gamma-ray spectroscopy was accomplished with the Gammasphere array. The yrast cascade of Te-124 was extended up to 5481-keV excitation energy with a tentative 16(+) assignment for the highest observed state. This state does not exhibit the characteristics of the favored noncollective oblate states with I-pi = 16(+) observed in the lighter doubly even Te isotopes, indicating that such a state is probably no longer yrast in Te-124.