EPJ Web of Conferences (Mar 2014)

In-beam γ-ray spectroscopy of 38,40,42Si

  • Matsushita M.,
  • Takeuchi S.,
  • Aoi N.,
  • Doornenbal P.,
  • Lee J.,
  • Li K.,
  • Motobayashi T.,
  • Scheit H.,
  • Steppenbeck D.,
  • Wang H.,
  • Baba H.,
  • Bazin D.,
  • Càceres L.,
  • Crawford H.,
  • Fallon P.,
  • Gernhäuser R.,
  • Gibelin J.,
  • Go S.,
  • Grévy S.,
  • Hinke C.,
  • Hoffman C. R.,
  • Hughes R.,
  • Ideguchi E.,
  • Ieki K.,
  • Jenkins D.,
  • Kobayashi N.,
  • Kondo Y.,
  • Krücken R.,
  • Le Bleis T.,
  • Lee G.,
  • Matta A.,
  • Michimasa S.,
  • Nakamura T.,
  • Ota S.,
  • Petri M.,
  • Sako T.,
  • Sakurai H.,
  • Shimoura S.,
  • Steiger K.,
  • Takahashi K.,
  • Takechi M.,
  • Togano Y.,
  • Winkler R.,
  • Yoneda K.

DOI
https://doi.org/10.1051/epjconf/20146602070
Journal volume & issue
Vol. 66
p. 02070

Abstract

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Excited states in the nuclei 38,40,42 Si have been studied using in-beam Γ-ray spectroscopy following multi-nucleon removal reactions to investigate the systematics of excitation energies along the Z=14 isotopic chain. The most probable candidates for the transition from the yrast 4+ state were tentatively assigned among several γ lines newly observed in the present study. The energy ratios between the 21+ and 41+ states were obtained to be 2.09(5), 2.56(5) and 2.93(5) for 38,40,42Si, respectively, indicating a rapid development of deformation in Si isotopes from N=24 to, at least, N=28.