High-Resolution Hard X-Ray and Gamma-Ray Spectrometers Based on Superconducting Absorbers Coupled to Superconducting Transition Edge Sensors [electronic resource]
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| Online Access: |
Online Access (via OSTI) |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C : Oak Ridge, Tenn. :
United States. Department of Energy. Office of the Assistant Secretary for Defense Programs ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2000.
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| Subjects: |
| Abstract: | We are developing detectors based on bulk superconducting absorbers coupled to superconducting transition edge sensors (TES) for high-resolution spectroscopy of hard X-rays and soft gamma-rays. We have achieved an energy resolution of 70 eV FWHM at 60 keV using a 1 x 1 x 0.25 mm³ Sn absorber coupled to a Mo/Cu multilayer TES with a transition temperature of 100 mK. The response of the detector is compared with a simple model using only material properties data and characteristics derived from IV-measurements. We have also manufactured detectors using superconducting absorbers with a higher stopping power, such as Pb and Ta. We present our first measurements of these detectors, including the thermalization characteristics of the bulk superconducting absorbers. The differences in performance between the detectors are discussed and an outline of the future direction of our detector development efforts is given. |
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| Item Description: | Published through SciTech Connect. 09/21/2000. "ucrl-jc-137361" 4140 ISSN 0277-786X. SPIE Meeting, San Diego, CA (US), 07/30/2000--08/04/2000. van den Berg, M.; Chow, D.; Loshak, A.; Cunningham, M.F.; Barbee, T.W.; Matthias, F.; Labov, S.E. |
| Physical Description: | 719 Kilobytes pages : digital, PDF file. |