Fresnel zone plate telescopes for X-ray imaging I: experiments with a quasi-parallel beam

TL;DR

This paper demonstrates the use of Fresnel Zone Plate telescopes for X-ray imaging through experiments with a quasi-parallel beam, analyzing fringe patterns, image reconstruction, and performance comparison with existing space-astronomy devices.

Contribution

It provides experimental validation and theoretical analysis of Fresnel Zone Plate telescopes for X-ray imaging, including fringe pattern study and image reconstruction techniques.

Findings

Successful imaging with zone plate pairs in a quasi-parallel beam

Good agreement between experimental results and Monte-Carlo simulations

Performance comparison shows advantages over traditional X-ray imaging devices

Abstract

Combination of Fresnel Zone Plates (FZP) can make an excellent telescope for imaging in X-rays. We present here the results of our experiments with several pairs of tungsten made Fresnel Zone plates in presence of an X-ray source kept at a distance of about 45 feet. The quasi-parallel beam allowed us to study sources placed on the axis as well as off the axis of the telescope. We present theoretical study of the fringe patterns produced by the zone plates in presence of a quasi-parallel source. We compare the patterns obtained from experiments with those obtained by our Monte-Carlo simulations. The images are also reconstructed by deconvolution from both the patterns. We compare the performance of such a telescope with other X-ray imaging devices used in space-astronomy.