Neutron i13/2 intruder band in Sm139

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

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7 Scopus citations


The high-spin structure of Sm139 has been investigated with the Pd110(34S,5n) reaction at a beam energy of 159 MeV at the Stony Brook Tandem/Superconducting LINAC facility. The TESSA3 spectrometer array was used to collect - coincidence data from which an extended decoupled band structure has been found. It is proposed that this band is based on the i13/2 (=1/2) neutron intruder orbital. The decay pattern, enhanced dynamic moments of inertia, and aligned spins are consistent with the i13/2 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 (US)
Pages (from-to)104-109
Number of pages6
JournalPhysical Review C
Issue number1
StatePublished - Jan 1 1994
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Vaska, P., Bhattacharjee, S., Fossan, D. B., Lafosse, D. R., Liang, Y., Schnare, H., Starosta, K., Waring, M. P., Hibbert, I., Wadsworth, R., Hauschild, K., Beausang, C. W., Clarke, S., Forbes, S. A., Nolan, P. J., Paul, E. S., Semple, A. T., Mullins, S. M., Grawe, H., & Maier, K. H. (1994). Neutron i13/2 intruder band in Sm139. Physical Review C, 50(1), 104-109.