A Dispersive Inelastic X-ray Scattering Spectrometer for Use at X-ray Free Electron Lasers
A Dispersive Inelastic X-ray Scattering Spectrometer for Use at X-ray Free Electron Lasers
复制标题
用于 X 射线自由电子激光器的色散非弹性 X 射线散射光谱仪
DOI:
10.3390/app7090899
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
C. Milne
中科院分区:
文献类型:
--
作者:
J. Szlachetko;M. Nachtegaal;D. Grolimund;G. Knopp;Sergey Peredkov;J. C. –. Masztafiak;C. Milne
We report on the application of a short working distance von Hamos geometry spectrometer to measure the inelastic X-ray scattering (IXS) signals from solids and liquids. In contrast to typical IXS instruments where the spectrometer geometry is fixed and the incoming beam energy is scanned, the von Hamos geometry allows measurements to be made using a fixed optical arrangement with no moving parts. Thanks to the shot-to-shot capability of the spectrometer setup, we anticipate its application for the IXS technique at X-ray free electron lasers (XFELs). We discuss the capability of the spectrometer setup for IXS studies in terms of efficiency and required total incident photon flux for a given signal-to-noise ratio. The ultimate energy resolution of the spectrometer, which is a key parameter for IXS studies, was measured to the level of 150 meV at short crystal radius thanks to the application of segmented crystals for X-ray diffraction. The short working distance is a key parameter for spectrometer efficiency that is necessary to measure weak IXS signals.
影响因子:
1.6
作者:
Alonso-Mori, Roberto;Kern, Jan;Bergmann, Uwe
通讯作者:
Bergmann, Uwe
影响因子:
4.4
作者:
Bergmann, Uwe;Di Cicco, Andrea;Nilsson, Anders
通讯作者:
Nilsson, Anders
影响因子:
1.6
作者:
Sokaras, D.;Nordlund, D.;Bergmann, U.
通讯作者:
Bergmann, U.