Wide dynamic range germanium detector for perturbation crystallography.

Wide dynamic range germanium detector for perturbation crystallography. Research Abstract Details 

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Wide dynamic range germanium detector for perturbation crystallography. Abstract Text:

H Graafsma,P Thorander,G W Heunen,J Morse,

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.

Wide dynamic range germanium detector for perturbation crystallography. Publishing Authors By Initials

H Graafsma,P Thorander,GW Heunen,J Morse,

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Wide dynamic range germanium detector for perturbation crystallography. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of synchrotron radiation

VOLUME: 3

Page Numbers: 156-9

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ISSN: 0909-0495

DAY: 1

MONTH: Jul

YEAR: 1996

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LANGUAGE: eng

NlmUniqueID: 9888878

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Country: Denmark

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MEDLINETA: J Synchrotron Radiat

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