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Highly efficient angularly resolving x-ray spectrometer optimized for absorption measurements with collimated sources

Šmíd, M.; Gallardo González, I. LU ; Ekerfelt, H. LU ; Björklund Svensson, J. LU ; Hansson, Martin LU ; Wood, J. C.; Persson, Anna LU ; Mangles, S. P. D.; Lundh, O. LU and Falk, K I (2017) In Review of Scientific Instruments 88(6).
Abstract

Highly collimated betatron radiation from a laser wakefield accelerator is a promising tool for spectroscopic measurements. Therefore, there is a requirement to create spectrometers suited to the unique properties of such a source. We demonstrate a spectrometer which achieves an energy resolution of <5 eV at 9 keV (E/Delta;E>1800) and is angularly resolving the x-ray emission allowing the reference and spectrum to be recorded at the same time. The single photon analysis is used to significantly reduce the background noise. Theoretical performance of various configurations of the spectrometer is calculated by a ray-tracing algorithm. The properties and performance of the spectrometer including the angular and spectral resolution... (More)

Highly collimated betatron radiation from a laser wakefield accelerator is a promising tool for spectroscopic measurements. Therefore, there is a requirement to create spectrometers suited to the unique properties of such a source. We demonstrate a spectrometer which achieves an energy resolution of <5 eV at 9 keV (E/Delta;E>1800) and is angularly resolving the x-ray emission allowing the reference and spectrum to be recorded at the same time. The single photon analysis is used to significantly reduce the background noise. Theoretical performance of various configurations of the spectrometer is calculated by a ray-tracing algorithm. The properties and performance of the spectrometer including the angular and spectral resolution are demonstrated experimentally on absorption above the K-edge of a Cu foil backlit by a laser-produced betatron radiation x-ray beam.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Review of Scientific Instruments
volume
88
issue
6
publisher
American Institute of Physics
external identifiers
  • scopus:85021112163
  • wos:000404641300002
ISSN
0034-6748
DOI
10.1063/1.4986464
language
English
LU publication?
yes
id
61857b73-3154-44cc-b4bc-fbf079b25b1d
date added to LUP
2017-07-12 10:54:45
date last changed
2017-09-18 11:38:11
@article{61857b73-3154-44cc-b4bc-fbf079b25b1d,
  abstract     = {<p>Highly collimated betatron radiation from a laser wakefield accelerator is a promising tool for spectroscopic measurements. Therefore, there is a requirement to create spectrometers suited to the unique properties of such a source. We demonstrate a spectrometer which achieves an energy resolution of &lt;5 eV at 9 keV (E/Delta;E&gt;1800) and is angularly resolving the x-ray emission allowing the reference and spectrum to be recorded at the same time. The single photon analysis is used to significantly reduce the background noise. Theoretical performance of various configurations of the spectrometer is calculated by a ray-tracing algorithm. The properties and performance of the spectrometer including the angular and spectral resolution are demonstrated experimentally on absorption above the K-edge of a Cu foil backlit by a laser-produced betatron radiation x-ray beam.</p>},
  articleno    = {063102},
  author       = {Šmíd, M. and Gallardo González, I. and Ekerfelt, H. and Björklund Svensson, J. and Hansson, Martin and Wood, J. C. and Persson, Anna and Mangles, S. P. D. and Lundh, O. and Falk, K I},
  issn         = {0034-6748},
  language     = {eng},
  month        = {06},
  number       = {6},
  publisher    = {American Institute of Physics},
  series       = {Review of Scientific Instruments},
  title        = {Highly efficient angularly resolving x-ray spectrometer optimized for absorption measurements with collimated sources},
  url          = {http://dx.doi.org/10.1063/1.4986464},
  volume       = {88},
  year         = {2017},
}