Influence of LIGA Raster on Spatial Distribution of Radiation from Flash X-ray Generator

The development of microcollimators for photon energy in the range of 30-200 keV was carried out. A quasi-spherical or quasi-plane X-ray wave can be formed when the propagation vector of the collimator is locally parallel to the wave front, either near the X-ray focus or away from it. The method was tested to collimate the widespread beam from an X-ray generator. In the experiment, a flat nickel raster 1200 μm thick with tubes of 80 μm in diameter manufactured using LIGA technique, was used. For a flash X-ray device with an explosive electron emission and an anode voltage of 150 kV, a quasi-collimated X-ray beam with an angular divergence of up to 2.8 degrees (FWHM) was formed.