Scintillation Characterization of Doped Cesium Hafnium Chloride
(Conference Presentation)

Emmanuel Rowe; Brandon Goodwin; Pijush Bhattacharya; Arnold Burger; Ashley Stowe; Nerine Cherepy; Steve Payne

doi:10.1117/12.2238318

2 November 2016 Scintillation Characterization of Doped Cesium Hafnium Chloride (Conference Presentation)

Emmanuel Rowe, Brandon Goodwin, Pijush Bhattacharya, Arnold Burger, Ashley Stowe, Nerine Cherepy, Steve Payne

Author Affiliations +

Proceedings Volume 9968, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII; 996804 (2016) https://doi.org/10.1117/12.2238318
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Emmanuel Rowe, Brandon Goodwin, Pijush Bhattacharya, Arnold Burger, Ashley Stowe, Nerine Cherepy, and Steve Payne "Scintillation Characterization of Doped Cesium Hafnium Chloride (Conference Presentation)", Proc. SPIE 9968, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII, 996804 (2 November 2016); https://doi.org/10.1117/12.2238318

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