Characterization of large diameter dual-mode cerium-doped Tl2LiYCl6 advanced scintillator

R. Hawrami, E. Ariesanti, A. Burger, E. Neely, J. Glodo, L. Pandian, C. Ji, S. Stepanoff, D. E. Wolfe, F. Liang

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Abstract

In this paper we are reporting on the progress and scale up of the Cerium-doped Tl2LiYCl6 (TLYC) scintillator. The boules up to 2-inch in diameter were grown by the Bridgman method at Fisk University. The lapped and polished samples were characterized for their scintillation properties including gamma-neutron dual mode detection. The 1.5-inch diameter samples demonstrated the energy resolution as good as 4.5% (FWHM) at 662 keV. The neutron peak due to 6Li(n, α) reaction was observed at 1.8 MeV gamma equivalent energy. Gamma-neutron pulse shape discrimination (PSD) was demonstrated with the Figure-of-Merit (FOM) of 1.8. The hermetically encapsulated samples were also evaluated for their radiation hardness with irradiation up to 1 Mrad.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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