Design and feasibility of quick EXAFS scans for a 'broomstick' double-crystal monochromator at PLS beamline.

Design and feasibility of quick EXAFS scans for a 'broomstick' double-crystal monochromator at PLS beamline. Research Abstract Details 

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Design and feasibility of quick EXAFS scans for a 'broomstick' double-crystal monochromator at PLS beamline. Abstract Text:

J M Lee,N E Sung,J K Park,J G Yoon,J H Kim,M H Choi,K B Lee,

A data-collection technique for quick extended X-ray absorption fine-structure spectroscopy (QEXAFS) was developed with a new 'broomstick' double-crystal monochromator, which has been installed for X-ray absorption fine-structure (XAFS) applications at the Pohang Light Source. The monochromator operates in a fixed-exit scan mode as the Bragg angle is varied from 8 to 80 degrees, corresponding to 2-14 keV, using an Si(111) crystal. The monochromator scan capability was investigated by analysing EXAFS data quality from step-scan and from continuous rotation of the Bragg crystal reflection angle. In our fast continuous-scan design, the electronic pulsing speed of the step motor is adjustable to avoid the monochromatic beam instability caused by serious mechanical resonance. The feasibility of QEXAFS scanning is demonstrated by a typical EXAFS scan (e.g. 1 keV range) being taken within 1 min.

Design and feasibility of quick EXAFS scans for a 'broomstick' double-crystal monochromator at PLS beamline. Publishing Authors By Initials

JM Lee,NE Sung,JK Park,JG Yoon,JH Kim,MH Choi,KB Lee,

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Design and feasibility of quick EXAFS scans for a 'broomstick' double-crystal monochromator at PLS beamline. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of synchrotron radiation

VOLUME: 5

Page Numbers: 524-6

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ISSN: 0909-0495

DAY: 1

MONTH: 05

YEAR: 1998

Design and feasibility of quick EXAFS scans for a 'broomstick' double-crystal monochromator at PLS beamline. Information

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LANGUAGE: eng

NlmUniqueID: 9888878

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Grant and Affiliation Information for Design and feasibility of quick EXAFS scans for a 'broomstick' double-crystal monochromator at PLS beamline.

AFFILIATION: Beamline Research Division, Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Korea.

Country: Denmark

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MEDLINETA: J Synchrotron Radiat

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