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Design of a multilayer-based collimated plane-grating monochromator for tender X-ray range
DOI:
10.1107/S1600577516017884
Authors:
Xiaowei
Yang
(Tongji University)
,
Hongchang
Wang
(Diamond Light Source)
,
Matthew
Hand
(Diamond Light Source)
,
Kawal
Sawhney
(Diamond Light Source)
,
Burkhard
Kaulich
,
Igor V.
Kozhevnikov
(Shubnikov Institute of Crystallography of Federal Scientific Research Centre `Crystallography and Photonics' of Russian Academy of Sciences)
,
Qiushi
Huang
(Tongji University)
,
Zhanshan
Wang
(Tongji University)
Co-authored by industrial partner:
No
Type:
Journal Paper
Journal:
Journal Of Synchrotron Radiation
, VOL 24
, PAGES 168 - 174
State:
Published (Approved)
Published:
January 2017

Abstract: Collimated plane-grating monochromators (cPGMs), consisting of a plane mirror and plane diffraction grating, are essential optics in synchrotron radiation sources for their remarkable flexibility and good optical characteristics in the soft X-ray region. However, the poor energy transport efficiency of a conventional cPGM (single-layer-coated) degrades the source intensity and leaves reduced flux at the sample, especially for the tender X-ray range (1–4 keV) that covers a large number of K- and L-edges of medium-Z elements, and M-edges of high-Z elements. To overcome this limitation, the use of a multilayer-based cPGM is proposed, combining a multilayer-coated plane mirror with blazed multilayer gratings. With this combination, the effective efficiency of cPGMs can be increased by an order of magnitude compared with the conventional single-layer cPGMs. In addition, higher resolving power can be achieved with improved efficiency by increasing the blaze angle and working at higher diffraction order.
Journal Keywords: X-ray optics; monochromator; diffraction grating; multilayer
Subject Areas:
Technique Development
Technical Areas:
Optics
Documents:
ve5066.pdf
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