Enhanced X-Ray Angular Dispersion and X-ray Spectrographs with Resolving Power Beyond 10$^{8}$
Abstract
Spectrograph is an optical device that is used to disperse photons of different energies into distinct directions and space locations, and to take a snapshot of the whole spectrum of photon energies with a spatially sensitive photon detector. Substantial advantage of a spectrograph over an ordinary spectral analyzer, is its ability to deal with many photon energies simultaneously, thus reducing exposure time per spectrum considerably. To realize a spectrograph, dispersing elements with large angular dispersion rate are required. Here we show, on the example of CDW x-ray optics [1-3], that multi-crystal arrangements may feature cumulative angular dispersion rates more than an order of magnitude larger than those attainable in single Bragg reflections. This makes, first, hard x-ray spectrographs feasible, and, secondly, a resolving power beyond achievable.
Cite
@article{arxiv.1110.6662,
title = {Enhanced X-Ray Angular Dispersion and X-ray Spectrographs with Resolving Power Beyond 10$^{8}$},
author = {Yuri Shvyd'ko},
journal= {arXiv preprint arXiv:1110.6662},
year = {2015}
}