DocumentCode
908742
Title
Performance of a Gamma-Ray and X-Ray Spectrometer Utilizing Germanium and Si(Li) Detectors Cooled by a Closed-Cycle Cryogenic Mechanical Refrigerator
Author
Stone, R.E. ; Barkley, V.A. ; Fleming, J.A.
Author_Institution
EG&G ORTEC 100 Midland Road Oak Ridge, Tennessee 37830 U.S.A.
Volume
33
Issue
1
fYear
1986
Firstpage
299
Lastpage
302
Abstract
A mechanically cooled spectrometer has been constructed and tested separately with Si(Li) planar, high-purity germanium (HPGe) planar, and HPGe coaxial detectors. For each of these types of semiconductor detectors, this spectrometer has attained the lowest noise and best resolution at 5.9 keV, 122 keV, or 1.33 MeV of any closed-cycle mechanically cooled spectrometer which has been reported on in the literature. Resolutions at 5.9 keV were 175 eV FWHM with a 4 mm diameter Si(Li) detector and 202 eV with a 16 mm HPGe planar detector. With a 10% relative efficiency HPGe coaxial detector, resolutions of 816 eV at 122 keV and 1.70 keV at 1.33 MeV were obtained.
Keywords
Coaxial components; Cryogenics; Gamma ray detection; Gamma ray detectors; Germanium; Refrigeration; Spectroscopy; Testing; X-ray detection; X-ray detectors;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1986.4337104
Filename
4337104
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