Enhancing primary processing for small-angle X-ray scattering

A program is reported for primary processing of small-angle X-ray scattering from various cameras. The software integrates basic functions necessary for primary processing that include instrument parameter calibration, scattering angle calibration, the conversion of a two-dimensional image to a one-dimensional curve, background and absorption subtraction, and correction for collimation effects. All instrument parameters for primary processing needs were derived with high precision by fitting a diffraction ring of a standard without the measurement of other parameters. The program is applicable whether the detector photosensitive plane is vertical or tilted with respect to the direct beam and operates easily, automatically, and rapidly on Windows computers. This article describes the structure, function, and features of the software.