Highly efficient angularly resolving x-ray spectrometer optimized for absorption measurements with collimated sources
File(s)
Accepted version
Author(s)
Type
Journal Article
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∕ΔE>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.
Date Issued
2017-06-19
Date Acceptance
2017-06-05
Citation
Review of Scientific Instruments, 2017, 88
ISSN
1089-7623
Publisher
AIP Publishing
Journal / Book Title
Review of Scientific Instruments
Volume
88
Copyright Statement
© 2017 The Authors. Published by AIP Publishing.
Sponsor
Commission of the European Communities
Science and Technology Facilities Council (STFC)
Grant Number
682399
ST/P002021/1
Subjects
Science & Technology
Technology
Physical Sciences
Instruments & Instrumentation
Physics, Applied
Physics
Applied Physics
09 Engineering
02 Physical Sciences
03 Chemical Sciences
Publication Status
Published
Article Number
063102