Small-Angle X-Ray Scattering System with Linear Position-Sensitive Detector

A linear position-sensitive detector has been constructed for use in small-angle x-ray scattering experiments. It is a one-dimensional, pressurized gasfilled detector with a delay line read-out. Calculated efficiency of the detector at 8.04 keV and 45 psi for Ar-CH4 filling is 60%, and for Xe-CO2 filling is 90% limited only by the thickness of the entrance beryllium window. Inherent resolution of the detector is 0.1 mm for normal incident x-rays. The overall resolution of the detection system is determined by the width and angular divergencies of the point collimated Cukα, beam used in the experiment. The performance of the system is described in terms of measurements on Al-Zn alloy samples.