PERFORMANCE OF SI LEC GAAS DETECTORS AT 20-DEGREES-C AND -30-DEGREES-C FOR X-RAY AND GAMMA-RAY SPECTROSCOPY

Authors
BERTUCCIO G ALIETTI M CANALI C CETRONIO A CHIOSSI C NAVA F
Citation
G. Bertuccio et al., PERFORMANCE OF SI LEC GAAS DETECTORS AT 20-DEGREES-C AND -30-DEGREES-C FOR X-RAY AND GAMMA-RAY SPECTROSCOPY, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 379(1), 1996, pp. 152-154
Citations number
10
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
379
Issue
1
Year of publication
1996
Pages
152 - 154
Database
ISI
SICI code
0168-9002(1996)379:1<152:POSLGD>2.0.ZU;2-I
Abstract
We report on the performance and limitations of a 7 mm(2), 100 mu m th ick SI LEC GaAs detector, operated in overdepleted conditions with app lied bias of 400 V at 20 degrees C and -30 degrees C, In detecting X- and gamma-rays. At 20 degrees C performance is limited to a charge col lection efficiency of 92% and to an energy resolution of about 16.5 ke V FWHM on the 59.5 keV line of Am-241. At -30 degrees C the charge col lection efficiency is 85% and a resolution in between 1.8 and 2.2 keV FWHM in the photon energy range 8-60 keV has been achieved. The latest data represent to bur knowledge the best ones yet reported for GaAs L EC detectors.