P Vaska, S Bhattacharjee, D B Fossan, D R Lafosse, Y Liang, H Schnare, K Starosta, M P Waring, I Hibbert, R Wadsworth, K Hauschild, C W Beausang, S Clarke, S A Forbes, P J Nolan, E S Paul, A T Semple, S M Mullins, H Grawe, K H Maier

Research output: Contribution to journalArticlepeer-review


The high-spin structure of Sm-139 has been investigated with the (Pd(S,5n))-Pd-110-S-34 reaction at a beam energy of 159 MeV at the Stony Brook Tandem/Superconducting LINAC facility. The TESSA3 spectrometer array was used to collect gamma-gamma coincidence data from which an extended decoupled band structure has been found. It is proposed that this band is based on the i13/2 (OMEGA = 1/2) neutron intruder orbital. The decay pattern, enhanced dynamic moments of inertia, and aligned spins are consistent with the nui13/2 bands in neighboring odd-neutron nuclides. Total Routhian surface and cranked shell model calculations reproduce qualitative features of these nuclides, further supporting the proposed interpretation.

Original languageEnglish
Pages (from-to)104-109
Number of pages6
JournalPhysical Review C
Issue number1
Publication statusPublished - Jul 1994


  • GD-139

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