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Title: Real-Time Wavelength Discrimination for Improved Neutron Discrimination in CLYC

Abstract

We investigated the effects of optical filters on the pulse shape discrimination properties of Cs 2LiYCl 6:Ce (CLYC) scintillator crystals. By viewing the scintillation light through various optical filters, we attempted to better distinguish between neutron and gamma ray events in the crystal. We applied commercial interference and colored glass filters in addition to fabricating quantum dot (QD) filters by suspending QDs in plastic films and glass. QD filters ultimately failed because of instability of the QDs with respect to oxidation when exposed to ambient air, and the tendency of the QDs to aggregate in the plastic. Of the commercial filters, the best results were obtained with a bandpass interference filter covering the spectral region containing core-valence luminescence (CVL) light. However, the PSD response of filtered CLYC light was always poorer than the response exhibited by unfiltered light because filters always reduced the amount of light available for signal processing.

Authors:
 [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1210158
Report Number(s):
ORNL/LTR-2015/343
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Hornback, Donald Eric, Hu, Michael Z., and Bell, Zane W. Real-Time Wavelength Discrimination for Improved Neutron Discrimination in CLYC. United States: N. p., 2015. Web. doi:10.2172/1210158.
Hornback, Donald Eric, Hu, Michael Z., & Bell, Zane W. Real-Time Wavelength Discrimination for Improved Neutron Discrimination in CLYC. United States. doi:10.2172/1210158.
Hornback, Donald Eric, Hu, Michael Z., and Bell, Zane W. Fri . "Real-Time Wavelength Discrimination for Improved Neutron Discrimination in CLYC". United States. doi:10.2172/1210158. https://www.osti.gov/servlets/purl/1210158.
@article{osti_1210158,
title = {Real-Time Wavelength Discrimination for Improved Neutron Discrimination in CLYC},
author = {Hornback, Donald Eric and Hu, Michael Z. and Bell, Zane W.},
abstractNote = {We investigated the effects of optical filters on the pulse shape discrimination properties of Cs2LiYCl6:Ce (CLYC) scintillator crystals. By viewing the scintillation light through various optical filters, we attempted to better distinguish between neutron and gamma ray events in the crystal. We applied commercial interference and colored glass filters in addition to fabricating quantum dot (QD) filters by suspending QDs in plastic films and glass. QD filters ultimately failed because of instability of the QDs with respect to oxidation when exposed to ambient air, and the tendency of the QDs to aggregate in the plastic. Of the commercial filters, the best results were obtained with a bandpass interference filter covering the spectral region containing core-valence luminescence (CVL) light. However, the PSD response of filtered CLYC light was always poorer than the response exhibited by unfiltered light because filters always reduced the amount of light available for signal processing.},
doi = {10.2172/1210158},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {5}
}

Technical Report:

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