DocumentCode
1223076
Title
A variable temperature cryostat that produces in situ clean-up of germanium. detector surfaces
Author
Pehl, R.H. ; Madden, N.W. ; Malone, D.F. ; Cork, C.P. ; Landis, D.A. ; Xing, J.S. ; Friesel, D.L.
Author_Institution
Lawrence Berkeley Lab., CA, USA
Volume
36
Issue
1
fYear
1989
fDate
2/1/1989 12:00:00 AM
Firstpage
190
Lastpage
193
Abstract
Variable-temperature cryostats that can maintain germanium detectors at temperatures from 82 K to about 400 K while the thermal shield surrounding the detectors remains much colder have been developed. Cryostats such as these offer the possibility of cryopumping material from the surface of detectors to the colder thermal shield. The diode characteristics of several detectors have shown very significant improvement following thermal cycles up to about 150 K in these cryostats. The possible applications of such cryostats are discussed
Keywords
cryostats; elemental semiconductors; germanium; semiconductor counters; 82 to 400 K; Ge detectors; cryopumping; diode characteristics; in situ clean-up; semiconductor detectors; thermal shield; variable temperature cryostat; Cyclotrons; Diodes; Fingers; Germanium; Heating; Impedance; Infrared detectors; Nitrogen; Radiation detectors; Temperature distribution;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/23.34432
Filename
34432
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