Wide dynamic range germanium detector for perturbation crystallography
An IR detector based on a cooled germanium photodetector has been tested for applications in X-ray diffraction. The detector can be used simultaneously in photon-counting mode and current mode giving a dynamic range from < 1 to 10(9) photons s(-1). Since germanium is used as the photodetector, it...
| Veröffentlicht in: | Journal of synchrotron radiation. - 1994. - 3(1996), Pt 4 vom: 01. Juli, Seite 156-9 |
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| Weitere Verfasser: | , , |
| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1996
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| Zugriff auf das übergeordnete Werk: | Journal of synchrotron radiation |
| Schlagworte: | Journal Article |
| Zusammenfassung: | An IR detector based on a cooled germanium photodetector has been tested for applications in X-ray diffraction. The detector can be used simultaneously in photon-counting mode and current mode giving a dynamic range from < 1 to 10(9) photons s(-1). Since germanium is used as the photodetector, its efficiency at energies above 25 keV is much better than the silicon equivalents. The detector proved to be highly linear both in the low-flux region (< 10(5) photons s(-1)) where photon counting is used and in the high-flux region (> 10(5) photons s(-1)) where the detector is run in current mode. The response time of the detector is of the order of 1 mus, making it suitable for studies in perturbation crystallography, especially when coupled to a lock-in amplifier. As an example, the shift of a reflection of LiNbO(3) induced by an external electric field was determined with the germanium detector and lock-in amplifier |
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| Beschreibung: | Date Completed 02.10.2012 Date Revised 16.05.2006 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 0909-0495 |