Abstract
We introduce the concept of a liquid compound refractive X-ray zoom lens. The lens is generated by pumping a suitable liquid lens material like water, alcohol or heated lithium through a line of nozzles each forming a jet with the cross section of lens elements. The system is housed, so there is a liquid-circulation. This lens can be used in white beam at high brilliance synchrotron sources, as radiation damages are cured by the continuous reformation of the lens. The focal length can be varied by closing nozzles, thus reducing the number of lens elements in the beam.
Highlights
Compound refractive X-ray lenses (CRLs) are X-ray optics useful for photon energies above about 8 keV
We introduce the concept of a liquid compound refractive X-ray zoom lens
The lens is generated by pumping a suitable liquid lens material like water, alcohol or heated lithium through a line of nozzles each forming a jet with the cross section of lens elements
Summary
Compound refractive X-ray lenses (CRLs) are X-ray optics useful for photon energies above about 8 keV. They consist of a large number of focusing lens elements, first described in [1] and realized by [2]. Called transfocators have been designed to tune the focal length [14,15,16,17] In these transfocator sets of CRL elements can be removed using actuators. The Liquid Compound Refractive X-ray Lens (LCRL) is formed by a number of liquid jets generated through a line of nozzles with double parabolic cross-sections. The lens can be configured for line or point focus, or even astigmatic geometry to compensate for asymmetrical source dimensions, and thereby achieve a more circular focal spot on a sample
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