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High resistivity ZnSe coated substrates for microstrip gas chambers

Journal Article · · IEEE Transactions on Nuclear Science
DOI:https://doi.org/10.1109/23.682395· OSTI ID:624137
; ; ;  [1]; ;  [2]; ;  [3]
  1. Spire Corp., Bedford, MA (United States)
  2. Lawrence Berkeley National Lab., CA (United States). Physics Div.
  3. Carleton Univ., Ottawa, Ontario (Canada). Centre for Research in Particle Physics
+ Show Author Affiliations
Microstrip gas chambers (MSGCs) require substrates with sheet resistance in the range of 10{sup 13}--10{sup 16} ohms/square to eliminate polarization and surface charging effects between the electrodes. Thin films of II-VI semiconductors deposited on glass or plastic substrates are attractive for this application since bulk resistivity of these semiconductors vary in the range 10{sup 9}--10{sup 12} ohm-cm and films with good uniformity can be deposited over large-areas using inexpensive deposition techniques. In this paper, deposition, characterization, and fabrication of MSGCs using ZnSe thin films are reported for the first time. ZnSe thin films were deposited on glass and plastic substrates by thermal evaporation. Sheet resistance of ZnSe varied in the range of 10{sup 15} to 10{sup 16} ohms/square depending on the deposition conditions. A MSGC detector fabricated using a 0.5 {micro}m thick ZnSe layer on glass substrate exhibited best values; gas gain of 25,000 and an energy resolution of about 16.7% FWHM at a gain of 1,080 for a {sup 55}Fe source.
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
FG02-95ER82073
OSTI ID:
624137
Report Number(s):
CONF-971147--
Journal Information:
IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3Pt1 Vol. 45; ISSN 0018-9499; ISSN IETNAE
Country of Publication:
United States
Language:
English

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Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CHARGED PARTICLE DETECTION
COATINGS
ELECTRIC CONDUCTIVITY
GAS TRACK DETECTORS
PROPORTIONAL COUNTERS
SUBSTRATES
X-RAY DETECTION
ZINC SELENIDES