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Proceedings Paper

Scintillation Characterization of Doped Cesium Hafnium Chloride (Conference Presentation)
Author(s): Emmanuel Rowe; Brandon Goodwin; Pijush Bhattacharya; Arnold Burger; Ashley Stowe; Nerine Cherepy; Steve Payne

Paper Abstract

The scintillators currently providing the best energy resolution lower than 2.6% at 662 keV and sizes larger than 1 in. dia. 1 in. height are LaBr3(Ce) and SrI2(Eu). Despite energy resolution and decay time performance of LaBr3(Ce), the intrinsic radioactivity, due to naturally occurring 138La isotope in the matrix is a limitation for low count rate applications such as radioisotope identification of weak sources. Cesium Hafnium Chloride (CHC) is a high effective atomic number (Zeff=58) moderate density (3.86 g/cm3) scintillator for gamma spectroscopy, offering a cubic crystal structure, no intrinsic radioactivity, and highly proportional light yield, without intentional doping. CHC boasts a cubic crystal structure that is isostructural to K2HfCl6 and analogous to calcium fluoride with cesium ions in the fluorine ion position and the [HfCl6]2- octahedral replacing calcium ions. The scintillation of CHC is centered at 400 nm, with a principal decay time of 4.37 s, a light yield of up to 54,000 photons/MeV and energy resolution of 3.3% at 662 keV and we report on the effects of doping on the scintillation properties of CHC.

Paper Details

Date Published: 2 November 2016
PDF: 1 pages
Proc. SPIE 9968, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII, 996804 (2 November 2016); doi: 10.1117/12.2238318
Show Author Affiliations
Emmanuel Rowe, Fisk Univ. (United States)
Brandon Goodwin, Fisk Univ. (United States)
Pijush Bhattacharya, Fisk Univ. (United States)
Arnold Burger, Fisk Univ. (United States)
Vanderbilt Univ. (United States)
Ashley Stowe, Y-12 National Security Complex (United States)
Nerine Cherepy, Lawrence Livermore National Lab. (United States)
Steve Payne, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 9968:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII
Ralph B. James; Michael Fiederle; Arnold Burger; Larry Franks, Editor(s)

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