Portable electro-mechanically cooled high-resolution germanium detector
We have integrated a small, highly-reliable, electro-mechanical cryo-cooler with a high-resolution germanium detector for portable/field applications. The system weighs 6.8 kg and requires 40 watts of power to operate once the detector is cooled to its operating temperature. the detector is a 500 mm{sup 2} by 20-mm thick low-energy configuration that gives a full-width at half maximum (FWHM) energy resolution of 523 eV at 122 keV, when cooled with liquid nitrogen. The energy resolution of the detector, when cooled with the electro-mechanical cooler, is 570 eV at 122 keV. We have field tested this system in measurements of plutonium and uranium for isotopic and enrichment information using the MGA and MGAU analysis programs without any noticeable effects on the results.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 100399
- Report Number(s):
- UCRL-JC-118973; CONF-9505227-5; ON: DE95015886
- Resource Relation:
- Conference: 17. ERSADA symposium on safeguards and nuclear material management, Aachen (Germany), 9-11 May 1995; Other Information: PBD: May 1995
- Country of Publication:
- United States
- Language:
- English
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