Investigation of 152Sm by complementary reactions

P. E. Garrett, W. D. Kulp, J. L. Wood, J. M. Allmond, D. Bandyopadhyay, S. Christen, S. N. Choudry, D. Cline, D. Dashdorj, A. Dewald, A. Fitzler, C. Fransen, A. B. Hayes, H. Hua, K. Jessen, J. Jolie, A. Kloezer, P. Kudejova, A. Kumar, S. R. LesherA. Linnemann, A. Lisetskiy, D. Martin, M. Masur, M. T. McEllistrem, O. Möller, M. G. Mynk, C. J. McKay, J. N. Orce, P. Pejovic, T. Pissulla, J. M. Regis, A. Schiller, R. Teng, D. Tonev, C. Y. Wu, S. W. Yates

Research output: Contribution to journalConference articlepeer-review


Understanding the nuclear structure of 152Sm, along with other N = 90 isotones, has long posed a challenge. A rapid transition in shape between the spherical N = 88 150Sm and well-deformed N = 92 154Smis observed, along with strong evidence for shape coexistence. Competing ideas have been put forward over the decades, with the most recent being that N = 90 is at the critical point of a shape phase transition. Until recently, the lack of high-precision data has not allowed the competing models to be extensively tested. In a coordinated program of investigation, a series of complementary experiments, which include high-statistics β decay, multi-step Coulomb excitation, the 150Nd(α,2n) reaction, and the (n,nγ) reaction, have been performed for 152Sm. These experiments have revealed the existence of a pairing-isomer band, a hexadecapole band, the lack of multi-phonon β vibrational bands, and the repetition of structures built on the first excited Kπ = 0+ as built on the ground state. The status of these coordinated studies is examined.

Original languageEnglish
Pages (from-to)391-398
Number of pages8
JournalAIP Conference Proceedings
StatePublished - 2009
Event13th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics - Cologne, Germany
Duration: Aug 25 2009Aug 29 2009


  • Hexadecapole band
  • Octupole band
  • Rotational levels
  • Transitional nuclei

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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