Design of a large-area CsI(Tl) photo-diode array for explosives detection by neutron-activation gamma-ray spectroscopy

Authors
Evans, RJ Jupp, ID Lei, F Ramsden, D
Citation
Rj. Evans et al., Design of a large-area CsI(Tl) photo-diode array for explosives detection by neutron-activation gamma-ray spectroscopy, NUCL INST A, 422(1-3), 1999, pp. 900-905
Citations number
3
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
422
Issue
1-3
Year of publication
1999
Pages
900 - 905
Database
ISI
SICI code
0168-9002(19990211)422:1-3<900:DOALCP>2.0.ZU;2-0
Abstract
A design for a large area, position-sensitive gamma-ray spectrometer for us e in imaging explosive materials is described. The design has been optimise d for use in the energy range from 2 to 12 MeV. At 5 MeV, the spectral reso lution of each CsI(Tl)-photodiode pixel is better than 3% FWHM. The multi-e lement detector system, when used in conjunction with a coded-aperture mask , is able to provide a "multi-colour" image of the scene when illuminated b y a neutron source. The feasibility of using such a system to identify the unique elemental composition and location of the explosive materials is dis cussed. (C) 1999 Elsevier Science B.V. All rights reserved.