Abstract
Isomeric decays were observed in on-line mass-separated products following the bombardment of 180W and 182W with 14N. The isomers are placed in 185,187Tl with half lives of 1.8 ± 0.3 and 16 ± 1 s, respectively. The systematics of the low-lying levels of 185-201Tl strongly suggest that the h 9 2 level intrudes into the next lowest shell and drops below the d 3 2 level at 191Tl, crosses again at 187Tl and commences to depart the shell with further decrease in N.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 133-135 |
| Number of pages | 3 |
| Journal | Physics Letters B |
| Volume | 66 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 17 1977 |
Funding
The decay of an isomeric level with a 16 s half-life has been observed in the A = 187 on-line mass-separated sources from the reactions of 14N on 180W and 182W with bombardment energies of 132 and 151 MeV respectively. Similarly an isomeric level with a 1.8 s half-life was observed in the mass-separated products at mass 185 from the above reactions with bombardment energies of 171 and 181 MeV, respectively. These iso- * Research performed at the UNISOR facility. 1 UNISOR is a consortmm of: The University of Alabama m Birmingham, Georgia Institute of Technology, Emory Uni-versity, Furman University, University of Kentucky, Louisiana State University, Umversity of Massachusetts, Oak Ridge Associated Universities, Oak Ridge National Labora-tory, University of South Carohna, University of Tennessee, Tennessee Technological Umverslty, Vtrgmia Polytechmc Institute and State University, and Vanderbdt University. It is supported by these restitutions and the U.S. Energy Research and Development Administration. 2 Supported m part by the U.S. Energy Research and Develop-ment AdministraUon.
ASJC Scopus subject areas
- Nuclear and High Energy Physics