Prolate yrast cascade in Tl-183

W Reviol*, MP Carpenter, RVF Janssens, D Jenkins, KS Toth, CR Bingham, LL Riedinger, W Weintraub, JA Cizewski, T Lauritsen, D Seweryniak, J Uusitalo, I Wiedenhover, R Wadsworth, AN Wilson, CJ Gross, JC Batchelder, K Helariutta, S Juutinen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The yrast sequence in (183)T1 has been studied for the first time in recoil-mass selected gamma-ray spectroscopic measurements. A rotational-like cascade of seven transitions is established down to the band head with probable spin and parity (13/2(+)). Unlike in the adjacent odd-mass T1 nuclei, prompt gamma decay from the yrast band to a lower lying weakly deformed (oblate) structure is not observed. These features are consistent with the predicted drop of the prolate band head in (183)T1 compared to (185)T1. The implications for the prolate energy minimum in odd-mass T1 nuclei at the neutron (i)13/2 midshell (N = 103) are discussed.

Original languageEnglish
Article numberARTN 044310
Number of pages7
JournalPhysical Review C
Volume61
Issue number4
Publication statusPublished - Apr 2000

Keywords

  • SPECTROSCOPY
  • HG ISOTOPES
  • SHAPE COEXISTENCE
  • EXCITED-STATES
  • PB-186
  • MINIMUM
  • DECAY

Cite this