Detection performance of SIGaAs detectors for nuclear medicine

Citation
E. Bertolucci et al., Detection performance of SIGaAs detectors for nuclear medicine, NUCL INST A, 460(1), 2001, pp. 123-126
Citations number
8
Language
INGLESE
art.tipo
Article
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
0168-9002 → ACNP
Volume
460
Issue
1
Year of publication
2001
Pages
123 - 126
Database
ISI
SICI code
0168-9002(20010311)460:1<123:DPOSDF>2.0.ZU;2-K
Abstract
This collaboration has already obtained encouraging results about the perfo rmance of 200 and 600 mum thick semiinsulating GaAs detectors, in terms of charge collection efficiency (c.c.e.), detection efficiency and imaging cap abilities, to be used as single photon counting detectors with photons in t he radiographic energy range. The possible use of such detectors in nuclear medicine implies detection of more energetic photons, up to the 140 keV of the Tc-99m source; thus efficient detectors must be thicker than those pre viously studied. In this paper, we present the results of the investigation of electrical and detection properties (spectra, c.c.e., energy resolution ) of a series of detectors, whose thickness ranges from 200 to 1000 mum, wh en irradiated with radioactive sources over the energy range used in nuclea r medicine. (C) 2001 Elsevier Science B.V. All rights reserved.