Title :
Design and Characterization of a Low Power Consumption, HPGe Spectrometer
Author :
Britton, Charles L., Jr. ; Becker, Thomas H.
Author_Institution :
EG&G ORTEC 100 Midland Road Oak Ridge, TN 37830
Abstract :
A low power consumption, high resolution germanium spectrometer is described. The spectrometer consists of an HPGe detector (either conventional or reverse electrode), a charge loop amplifier, a high count rate indicator, detector bias shutdown electronics, and a portable cryostat. A brief analysis of the charge loop amplifier is presented. Data for FET noise at reduced drain currents is also presented. The effects of various circuit components on temperature coefficient of gain are described along with measured temperature coefficient. Finally, the resolution and peak shift versus count rate are presented along with the spectrometer configuration.
Keywords :
Circuit noise; Detectors; Electrodes; Energy consumption; FETs; Gain measurement; Germanium; Noise reduction; Spectroscopy; Temperature measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1985.4336784