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Title: Progress in the Development of New Optics for Very High Resolution Inelastic X-Ray Scattering Spectroscopy

Abstract

We report on the progress in the development of new optics for very high resolution inelastic x-ray scattering spectroscopy. The principle of monochromatization and spectral analysis exploits the effect of angular dispersion in asymmetric Bragg diffraction in backscattering. It has a potential of monochromatizing medium-energy x-rays (5-10 keV) to meV and sub-meV bandwidths. We observe the effect of angular dispersion and study the performance of a CDW monochromator for 9.1 keV x-rays, based on this principle. The monochromator consists of three crystals playing the role of a collimator (C), a dispersing element (D), and a wavelength selector (W). Two CDW monochromators, with the second one functioning as an analyzer, are used to measure the effect of monochromatization. An energy bandwidth of 2.2 meV for a single monochromator is demonstrated.

Authors:
; ;  [1];  [2];  [3];  [4];  [5]
  1. Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)
  2. Physikalisch-Technische Bundesanstalt (PTB), D-38116 Braunschweig (Germany)
  3. Institut fuer Experimentalphysik, Universitaet Hamburg, D-22761 Germany (Germany)
  4. University of Illinois at Urbana-Champaign, IL 61801 (United States)
  5. (United States)
Publication Date:
OSTI Identifier:
21052623
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 879; Journal Issue: 1; Conference: 9. international conference on synchrotron radiation instrumentation, Daegu (Korea, Republic of), 28 May - 2 Jun 2006; Other Information: DOI: 10.1063/1.2436168; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ASYMMETRY; BACKSCATTERING; BEAM OPTICS; BRAGG REFLECTION; COLLIMATORS; CRYSTALS; KEV RANGE; MEV RANGE; MONOCHROMATORS; PERFORMANCE; PHOTON BEAMS; RESOLUTION; WAVELENGTHS; X RADIATION; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY

Citation Formats

Shvyd'ko, Yu. V., Alatas, A., Zhao, J., Kuetgens, U., Rueter, H. D., Lerche, M., and Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439. Progress in the Development of New Optics for Very High Resolution Inelastic X-Ray Scattering Spectroscopy. United States: N. p., 2007. Web. doi:10.1063/1.2436168.
Shvyd'ko, Yu. V., Alatas, A., Zhao, J., Kuetgens, U., Rueter, H. D., Lerche, M., & Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439. Progress in the Development of New Optics for Very High Resolution Inelastic X-Ray Scattering Spectroscopy. United States. doi:10.1063/1.2436168.
Shvyd'ko, Yu. V., Alatas, A., Zhao, J., Kuetgens, U., Rueter, H. D., Lerche, M., and Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439. Fri . "Progress in the Development of New Optics for Very High Resolution Inelastic X-Ray Scattering Spectroscopy". United States. doi:10.1063/1.2436168.
@article{osti_21052623,
title = {Progress in the Development of New Optics for Very High Resolution Inelastic X-Ray Scattering Spectroscopy},
author = {Shvyd'ko, Yu. V. and Alatas, A. and Zhao, J. and Kuetgens, U. and Rueter, H. D. and Lerche, M. and Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439},
abstractNote = {We report on the progress in the development of new optics for very high resolution inelastic x-ray scattering spectroscopy. The principle of monochromatization and spectral analysis exploits the effect of angular dispersion in asymmetric Bragg diffraction in backscattering. It has a potential of monochromatizing medium-energy x-rays (5-10 keV) to meV and sub-meV bandwidths. We observe the effect of angular dispersion and study the performance of a CDW monochromator for 9.1 keV x-rays, based on this principle. The monochromator consists of three crystals playing the role of a collimator (C), a dispersing element (D), and a wavelength selector (W). Two CDW monochromators, with the second one functioning as an analyzer, are used to measure the effect of monochromatization. An energy bandwidth of 2.2 meV for a single monochromator is demonstrated.},
doi = {10.1063/1.2436168},
journal = {AIP Conference Proceedings},
number = 1,
volume = 879,
place = {United States},
year = {Fri Jan 19 00:00:00 EST 2007},
month = {Fri Jan 19 00:00:00 EST 2007}
}
  • No abstract prepared.
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  • High-resolution Resonant Inelastic X-ray Scattering (RIXS) requires diffraction gratings with very exacting characteristics. The gratings should provide both very high dispersion and high efficiency which are conflicting requirements and extremely challenging to satisfy in the soft x-ray region for a traditional grazing incidence geometry. To achieve high dispersion one should increase the groove density of a grating; this however results in a diffraction angle beyond the critical angle range and results in drastic efficiency loss. The problem can be solved by use of multilayer coated blazed gratings (MBG). In this work we have investigated the diffraction characteristics of MBGs viamore » numerical simulations and have developed a procedure for optimization of grating design for a multiplexed high resolution imaging spectrometer for RIXS spectroscopy to be built in sector 6 at the Advanced Light Source (ALS). We found that highest diffraction efficiency can be achieved for gratings optimized for 4{sup th} or 5{sup th} order operation. Fabrication of such gratings is an extremely challenging technological problem. We present a first experimental prototype of these gratings and report its performance. High order and high line density gratings have the potential to be a revolutionary new optical element that should have great impact in the area of soft x-ray RIXS.« less