NDLI: Experimental study of Xe-Ne proportional counters for X-ray detection

Content Provider	IEEE Xplore Digital Library
Author	Borges, F.I.G.M. Santos, F.P. Amaro, F. Dias, T.H.V.T. Veloso, J.F.C.A. Conde, C.A.N.
Copyright Year	2004
Description	Author affiliation: Departamento de Fisica, Coimbra Univ., Portugal (Borges, F.I.G.M.; Santos, F.P.; Amaro, F.; Dias, T.H.V.T.)
Abstract	The use of appropriate mixtures of noble gases in proportional counters can take advantage of the Penning effect, a process of energy transfer between the two species which produces extra electrons. The Penning effect can occur in Xe-Ne mixtures and recent Monte Carlo simulation and experimental measurements have shown that a small percentage of Xe (below about 1%) brings to a minimum the fluctuations in the formation of the primary electron cloud and decreases the w-value to a magnitude near the case of pure Xe. In addition, the excitation and ionization thresholds and the fluctuations in charge multiplication become lower and the ionization efficiency becomes higher than in the pure Xe case, indicating that improved gas gain and energy resolution can be achieved at low applied voltages for a Xe-Ne filled proportional counter. In this work, we present an experimental study of the performance of a cylindrical proportional counter filled with several Xe-Ne mixtures at atmospheric pressure, for 5.9 keV X-rays. Results are presented in particular for the energy resolution and gas multiplication factor and a discussion of the experimental results is made.
Starting Page	523
Ending Page	525
File Size	413296
Page Count	3
File Format	PDF
ISBN	0780387007
ISSN	10823654
e-ISBN	0780387015
DOI	10.1109/NSSMIC.2004.1462248
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-16
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Counting circuits X-ray detection Electrons Fluctuations Ionization Energy resolution Gases Energy exchange Current measurement Charge measurement
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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