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Inelastic neutron scattering studies of 132,134^{132,134}Xe: Elucidating structure in a transitional region and possible interferences for 0νββ0\nu \beta \beta searches

May 28, 2015
4 pages
Published in:
  • EPJ Web Conf. 93 (2015) 01027
Contribution to:
  • Published: May 28, 2015
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Abstract: (EDP Sciences)
Highly enriched (> 99.9%) ^132Xe and ^134Xe gases were converted to solid ^132XeF_2 and ^134XeF_2 and were used as scattering samples for inelastic neutron scattering measurements at the University of Kentucky Accelerator Laboratory (UKAL). Lifetimes of levels up to 3.5MeV in excitation energy in these xenon isotopes were measured using the Doppler-shift attenuation method, allowing the determination of reduced transition probabilities. Gamma rays corresponding to new transitions and levels have been observed. In particular, tentative new excited 0^+ states and associated decays have been examined in an effort to elucidate the structure of these nuclei in a transitional region, and comparisons have been drawn with models which seek to describe such nuclei, e.g., the E(5) critical-point symmetry of the IBM. Newly identified potential interferences for neutrinoless double-beta decay searches involving ^136Xe are also discussed.
  • excited state: energy
  • n: scattering
  • nucleus
  • critical phenomena
  • double-beta decay: (0neutrino)
  • interference
  • attenuation
  • accelerator
  • gamma ray
  • structure
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