High spatial resolution in X-ray fluorescence
Abstract
The design of diffracting crystals for use in X-ray fluorescence spectrometers is discussed. Characteristics of the Johan and Johansson geometries are discussed and intensity profiles are developed. If the diffraction line has a finite width, concentration gradients will not be faithfully reproduced by gradients in the signal as the sample is scanned. Boundary effects for four types of concentration gradient are presented; as step function, linear gradients, exponential gradient, and Gaussian gradient.
- Publication:
-
Presented at the Denver X-ray Conference
- Pub Date:
- 1986
- Bibcode:
- 1986xray.conf.....Z
- Keywords:
-
- Crystals;
- High Resolution;
- Spatial Resolution;
- X Ray Diffraction;
- X Ray Fluorescence;
- Polarization (Waves);
- Signal To Noise Ratios;
- X Ray Sources;
- Solid-State Physics