The Debye-Scherrer camera at synchrotron sources: a revisit

Tine Straasø; J. Becker; Bo B. Iversen; Jens Als-Nielsen

doi:10.1107/s0909049512039441

The Debye-Scherrer camera at synchrotron sources: a revisit

Tine Straasø, J. Becker, Bo B. Iversen, Jens Als-Nielsen

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16 Citationer (Scopus)

Abstract

In a powder diffraction pattern one measures the intensity of Miller-indexed Bragg peaks versus the wavevector transfer sin/. With increasing wavevector transfer the density of occurrence of Bragg peaks increases while their intensity decreases until they vanish into the background level. The lowest possible background level is that due to Compton scattering from the powder. A powder diffraction instrument has been designed and tested that yields this ideal low-background level, obtainable by having the space between sample and detector all in vacuum with the entrance window so far upstream that scattering from it is negligible. To minimize overlap of Bragg peaks the combination of fine collimation of synchrotron radiation, a thin cylindrical sample and a high-resolution imaging plate detector is taken advantage of.

Originalsprog	Engelsk
Tidsskrift	Journal of Synchrotron Radiation
Vol/bind	20
Udgave nummer	Part 1
Sider (fra-til)	98-104
ISSN	0909-0495
DOI	https://doi.org/10.1107/s0909049512039441
Status	Udgivet - 1 jan. 2013

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10.1107/s0909049512039441

http://journals.iucr.org/s/issues/2013/01/00/wa5043/wa5043.pdf

Citationsformater

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AU - Becker, J.

AU - Iversen, Bo B.

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AB - In a powder diffraction pattern one measures the intensity of Miller-indexed Bragg peaks versus the wavevector transfer sin/. With increasing wavevector transfer the density of occurrence of Bragg peaks increases while their intensity decreases until they vanish into the background level. The lowest possible background level is that due to Compton scattering from the powder. A powder diffraction instrument has been designed and tested that yields this ideal low-background level, obtainable by having the space between sample and detector all in vacuum with the entrance window so far upstream that scattering from it is negligible. To minimize overlap of Bragg peaks the combination of fine collimation of synchrotron radiation, a thin cylindrical sample and a high-resolution imaging plate detector is taken advantage of.

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JO - Journal of Synchrotron Radiation

JF - Journal of Synchrotron Radiation

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ER -

The Debye-Scherrer camera at synchrotron sources: a revisit

Abstract

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