Effects of beam divergence and polychromaticity on small angle x-ray scattering measurements with laser plasma sources
Source abstract
Abstract
We explore the feasibility of small angle x-ray scattering (SAXS) measurements with intense laser-induced plasma sources. Such x-ray sources are inherently polychromatic and divergent. We simulate SAXS patterns using monochromatic and polychromatic x-ray sources with different divergences of polydisperse particle systems with different size distributions. The beam divergence is adjusted via varying x-ray source size, pinhole size, and the source-to-pinhole distance. Three typical laser plasma He-α sources (Fe, Cu, and Ge) are considered. The scattering curves are analyzed using the modified Guinier approach and the total non-negative least squares method. We demonstrate certain feasibility of SAXS measurements using laser plasma sources with a finite size, without a monochromator and additional software desmearing.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Atomic and Molecular Physics · X-ray Spectroscopy and Fluorescence Analysis · Laser-Plasma Interactions and Diagnostics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
The Peac Institute of Multiscale Sciences 1 , Chengdu, Sichuan, People’s Republic of China
School of Materials Science and Engineering, Southwest Jiaotong University 2 , Chengdu, Sichuan, People’s Republic of China
Funding
National Natural Science Foundation of China
References (23)
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