Paper
22 May 2015 Use of CLYC spectrometer in counter-terrorism applications
H. Ing, M. B. Smith, M. R. Koslowsky, H. R. Andrews
Author Affiliations +
Abstract
A new scintillator crystal, now known as CLYC (Cs2LiYCl6:Ce), has been under development for over 15 years (1). It was primarily of interest for radiation detection applications because of its good energy resolution for gamma rays (< 4% for 662 keV gamma rays) and its capability for detection of thermal neutrons. The pulse shapes of the signals from the two radiations are different, which allow them to be separated electronically, permitting simultaneous detection of gamma rays and neutrons. The crystal is now commercially available. Early investigations of the neutron response by the current authors (2) revealed that CLYC also responds to fast neutrons. In fact, the good energy resolution of the response under monoenergetic neutron irradiations showed that CLYC was an excellent high-energy neutron spectrometer. This discovery has great impact on the field of neutron spectroscopy, which has numerous, although often specialized, applications. This presentation focuses on applications in counter-terrorism scenarios where neutrons may be involved. The relative importance of the fast neutron response of CLYC, compared to the thermal and gamma-ray response, will be discussed for these scenarios.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
H. Ing, M. B. Smith, M. R. Koslowsky, and H. R. Andrews "Use of CLYC spectrometer in counter-terrorism applications", Proc. SPIE 9455, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing XVI, 945506 (22 May 2015); https://doi.org/10.1117/12.2181675
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KEYWORDS
Sensors

Gamma radiation

Crystals

Spectroscopy

Lead

Chemical species

Homeland security

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