The response of xenon X-ray detectors to full-energy absorption and fluorescence-escape events: measurement and modelling

Author

Dias, T.H.V.T. ; Santos, F.P. ; dos Santos, J.M.F. ; Lopes, J.A.M. ; Veloso, J.F.C.A. ; Rachinhas, P.J.B.M. ; Morgado, R.E. ; Stauffer, A.D. ; Conde, C.A.N.

Author_Institution

Dept. de Fisica, Coimbra Univ., Portugal

Volume

43

Issue

3

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

1432

Lastpage

1441

Abstract

We have observed that the pulse-height distributions of X-ray events that deposit essentially the same amount of energy in a xenon gas detector will vary according to the deexcitation pathways available to the photoionized atoms. A xenon gas proportional scintillation counter was used to compare the pulse-height distributions of events in which fluorescence X-rays from xenon escape detection. Experimental results are presented and the behaviour for different types of events is clarified using Monte Carlo simulation. The results indicate that particular care must be taken when using escape peaks for energy calibration of xenon gas detectors.

Keywords

Monte Carlo methods; X-ray detection; calibration; detector circuits; fluorescence; gas scintillation detectors; nuclear electronics; proportional counters; pulse height analysers; xenon; Monte Carlo simulation; X-ray detectors response; Xe; deexcitation pathways; energy calibration; escape peaks; fluorescence-escape events; full-energy absorption; gas detector; photoionized atoms; proportional scintillation counter; pulse-height distributions; Atomic layer deposition; Electromagnetic wave absorption; Event detection; Fluorescence; Gas detectors; Scintillation counters; Solid scintillation detectors; X-ray detection; X-ray detectors; Xenon;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.507079

Filename

507079