Universal mask for hard X rays
David Ceddia, Alaleh Aminzadeh, Philip K. Cook, Daniele Pelliccia,, Andrew M. Kingston, David M. Paganin

TL;DR
This paper demonstrates a novel method called ghost projection for flexible patterning of hard X-ray beams, enabling dynamic beam shaping and potential applications in lithography and other particle fields.
Contribution
It introduces the concept of ghost projection for hard X rays, providing a proof-of-concept and discussing its potential for universal, on-demand patterning and beam shaping.
Findings
Experimental proof-of-concept for hard X-ray ghost projection
Pattern flexibility up to a tunable constant offset
Potential for universal lithographic masks and beam-shaping devices
Abstract
The penetrating power of X rays underpins important applications such as medical radiography. However, this same attribute makes it challenging to achieve flexible on-demand patterning of X-ray beams. One possible path to this goal is ``ghost projection'', a method which may be viewed as a reversed form of classical ghost imaging. This technique employs multiple exposures, of a single illuminated non-configurable mask that is transversely displaced to a number of specified positions, to create any desired pattern. An experimental proof-of-concept is given for this idea, using hard X rays. The written pattern is arbitrary, up to a tunable constant offset, and its spatial resolution is limited by both (i) the finest features present in the illuminated mask and (ii) inaccuracies in mask positioning and mask exposure time. In principle, the method could be used to make a universal…
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Taxonomy
TopicsRandom lasers and scattering media · Advanced X-ray Imaging Techniques · Orbital Angular Momentum in Optics
