Abstract
Experimental results are presented obtained with a cryogenically cooled high-resolution X-ray spectrometer based on a 141 × 141 μm Nb-Al-Al2O3-Al-Nb superconducting tunnel junction (STJ) detector in an SR-XRF demonstration experiment. STJ detectors can operate at count rates approaching those of semiconductor detectors while still providing a significantly better energy resolution for soft X-rays. By measuring fluorescence X-rays from samples containing transition metals and low-Z elements, an FWHM energy resolution of 6-15 eV for X-rays in the energy range 180-1100 eV has been obtained. The results show that, in the near future, STJ detectors may prove very useful in XRF and microanalysis applications.
Original language | English (US) |
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Pages (from-to) | 515-517 |
Number of pages | 3 |
Journal | Journal of Synchrotron Radiation |
Volume | 5 |
Issue number | 3 |
DOIs | |
State | Published - May 1 1998 |
Externally published | Yes |
Keywords
- Cryogenic detectors
- Low-temperature detectors
- Microcalorimeters
- X-ray fluorescence
- X-ray spectroscopy
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Instrumentation