A high-resolution and high-efficiency x-ray spectrometer based on a multi-cone crystal

Abstract

A curved x-ray spectrometer based on a multi-cone crystal has been developed and demonstrated to improve
the spectra resolution and intensity e ciency measurements by our experiments and simulations. Here 6000
conical rings with a single-ringe of 10 m to free the stress on the lattice planes was successfully realized
in the multi-cone crystal, which provides a much larger solid collection angle and higher resolution than the
usually-used planer crystal in the general x-ray spectrometer. Thus, the experimental results show that its
spectrum resolution can reach 3.5 eV (full-width half maximum, FWHM) with the corresponding E= E
of 1420 ( 4976 eV). The intesity at the focus spot can be 110 times higher compared to that measured by a
planer cryatal spectrometer. Meanwhile, these results have also been con rmed by our numerical studies with
our new developed x-ray arbitrary-surface-crystal di raction software, X-chase. Attentionaly development
on the x-ray spectrometer is of speci c importance in the high energy density physics (HEDP), inertial
con nement fusion (ICF), and Astrophysics experiments.