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Title: First observation of rotational structures in Re 168

We assigned first rotational sequences to the odd-odd nucleus 168Re. Coincidence relationships of these structures with rhenium x rays confirm the isotopic assignment, while arguments based on the γ-ray multiplicity (K-fold) distributions observed with the new bands lead to the mass assignment. Configurations for the two bands were determined through analysis of the rotational alignments of the structures and a comparison of the experimental B(M1)/B(E2) ratios with theory. Tentative spin assignments are proposed for the πh 11/2νi 13/2 band, based on energy level systematics for other known sequences in neighboring odd-odd rhenium nuclei, as well as on systematics seen for the signature inversion feature that is well known in this region. Furthermore, the spin assignment for the πh 11/2ν(h 9/2/f 7/2) structure provides additional validation of the proposed spins and configurations for isomers in the 176Au → 172Ir → 168Re α-decay chain.
 [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [4] ;  [5] ;  [2] ;  [2] ;  [6] ;  [7] ;  [5] ;  [8] ;  [7] ;  [8] ;  [2] ;  [9] ;  [5] ;  [2] ;  [5] more »;  [1] ;  [1] ;  [1] « less
  1. U.S. Naval Academy, Annapolis, MD (United States). Dept. of Physics
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  3. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  4. Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
  5. Univ. of Notre Dame, IN (United States). Dept. of Physics
  6. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division, Nuclear Engineering Division; Univ. of Maryland, College Park, MD (United States). Dept. of Chemistry and Biochemistry
  7. Univ. of Massachusetts, Lowell, MA (United States). Dept. of Physics
  8. Argonne National Lab. (ANL), Argonne, IL (United States). Nuclear Engineering Division
  9. Mississippi State Univ., Mississippi State, MS (United States). Dept. of Physics
Publication Date:
OSTI Identifier:
Grant/Contract Number:
AC02-06CH11357; FG02-94ER40848; FG02-96ER40983; FG02-95ER40939; FG02-94ER40834; PHY-1203100; PHY-0754674; PHY10-68192
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 94; Journal Issue: 5; Journal ID: ISSN 2469-9985
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
Country of Publication:
United States