High resolution x-ray emission spectrometer for multiple hard x-ray emission lines: Demonstration for Cu Kα and Kβ emissions

Abstract

We present a compact 3D printed x-ray emission spectrometer based on the von Hamos geometry that represents a significant upgrade to the existing von Hamos geometry-based miniature x-ray emission spectrometer (miniXES) [Mattern et al., Rev. Sci. Instrum. 83(2), 023901 (2012)]. The upgrades include the incorporation of a higher pixel density 500K detector for improved energy resolution and an enlarged sample area to accommodate a wider range of sample formats. The versatile spectrometer houses removable crystal holders that can be easily exchanged, as well as movable alignment eyelets that give flexibility in Bragg angle selection. Designed for ease of manufacture, all the components, except for the apertures, can be 3D printed and readily assembled. We describe its implementation in measurements of resonant and non-resonant Cu Kα and Kβ x-ray emission and report the theoretical and measured energy resolution and collected solid angle of the emission.

TheAXEAP2program forKβ X-ray emission spectra analysis using artificial intelligence

“…A miniature X-ray emission spectrometer (miniXES) was employed to obtain high-resolution spectra within $ 1 eV (Solovyev et al, 2021;Mattern et al, 2012). The miniXES requires a micro-focused incident X-ray beam with a short working distance, flat analyzer crystals arranged on von Hamos geometry, and two-dimensional position-sensitive detector (2D-PSD) to collect energy-resolved fluorescence signal from the sample.…”

“…The broadening of the spectrum, half width at halfmaximum (HWHM), due to the 2D-PSD pixel resolution was determined by fitting elastic scattering lines with a Gaussian function. The resolution depends on the pixel size, optical geometry and analyzer (Solovyev et al, 2021). The elastic scatterings were collected during the calibration.…”