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Titolo:
SIGNAL GENERATION IN CDZNTE STRIP DETECTORS
Autore:
HAMEL LA; MACRI JR; DOTY FP;
Indirizzi:
UNIV MONTREAL MONTREAL PQ H3C 3J7 CANADA UNIV NEW HAMPSHIRE DURHAM NH 03824 NASA,GODDARD SPACE FLIGHT CTR GREENBELT MD 20771 ORBITAL SCI CORP GREENBELT MD 20771 DIGIRAD SAN DIEGO CA 92121
Titolo Testata:
IEEE transactions on nuclear science
fascicolo: 3, volume: 43, anno: 1996,
parte:, 2
pagine: 1422 - 1426
SICI:
0018-9499(1996)43:3<1422:SGICSD>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
L.A. Hamel et al., "SIGNAL GENERATION IN CDZNTE STRIP DETECTORS", IEEE transactions on nuclear science, 43(3), 1996, pp. 1422-1426

Abstract

The energy resolution of CdTe and CdZnTe detectors is usually limitedby the poor transport properties of holes. Devices segmented into small pixels have been observed to exhibit improved energy resolutions. Simulations have shown that this small pixel effect is due to the fact that small pixels are mostly sensitive to carriers moving close to thepixel, within a distance of the order of the pixel size. In this paper, signals are calculated for CdZnTe strip detectors in order to determine to what extent a similar small electrode effect is produced by strips. The free carrier density distributions following the absorption of a gamma-ray are calculated by solving the continuity equations. Combined with the strip weighting field, this provides the signal inducedin the strip. Simulations are made for various detector geometries and for both the anode and cathode strips. Simulated signals are compared with actual signals measured on CdZnTe detectors.

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Documento generato il 27/11/20 alle ore 09:43:57