@article{Mangles:2017:10.1063/1.4986464,
author = {Mangles, SPD and Smid, M and Gallardo, Gonzalez I and Ekerfelt, H and Bjorklund, Svensson J and Hansson, M and Wood, JC and Persson, A and Lundh, O and Falk, K},
doi = {10.1063/1.4986464},
journal = {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}
}

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TY  - JOUR
AB  - 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 (EΔE>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.
AU  - Mangles,SPD
AU  - Smid,M
AU  - Gallardo,Gonzalez I
AU  - Ekerfelt,H
AU  - Bjorklund,Svensson J
AU  - Hansson,M
AU  - Wood,JC
AU  - Persson,A
AU  - Lundh,O
AU  - Falk,K
DO  - 10.1063/1.4986464
PY  - 2017///
SN  - 1089-7623
TI  - Highly efficient angularly resolving x-ray spectrometer optimized for absorption measurements with collimated sources
T2  - Review of Scientific Instruments
UR  - http://dx.doi.org/10.1063/1.4986464
UR  - http://hdl.handle.net/10044/1/48990
VL  - 88
ER  - 

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