ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
In the energy range from 1 keV down to a few hundred eV, a newly developed "ultralow-energy measurable'' pure-Ge detector for a pulse-height analysis and a current-mode observation has been characterized using synchrotron radiation monochromatized by a grasshopper monochromator at the Photon Factory of the National Laboratory for High Energy Physics (KEK). X-ray measurements in this low-energy region were previously tried out using several types of "windowless'' Si(Li) detectors. These detectors, however, had trouble, including temporal variations in the quantum efficiencies because of their detector-surface deteriorations due to various impurities in vacuum chambers. Our pure-Ge detector has a 4000-A(ring) thick polymer window metalized by a 1400-A(ring) thick Al supported by a 100-μm apart Si-ribbed structure. However, for this liquid-nitrogen-cooled detector with the special window, its actual energy-response data are not available at this time. Therefore, the investigations of its characteristics are reported particularly for the purpose of the reliable x-ray observations in such a low-energy regime. © 1995 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1145675
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