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2 November 2000 Compound x-ray refractive lenses made of polyimide
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Theoretical considerations of the parameters that enable the construction of compound refractive lenses are treated in this writing. The best performing compound refractive lenses that have been constructed to date were made by Adelphi Technology Inc. stacking individual paraboloidal lenses made of polyimide (KaptonTM). Polyimide lenses are capable of focusing photon with energies between 4 keV and 60 keV with focal lengths below 60 cm. They are not affected much by small misalignment of the individual lenses. Surface finish is less stringent than for visible light lenses. The increase in intensity in the image plane relative to the intensity that would have been obtained without a lens or gain measured at the experimental station of a bend magnet beam line was found to be 5.5 at 9 keV x-rays with transmission of 10% at that same energy. The measured values were in good agreement with the theoretical predictions at all wavelengths tested.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
H. Raul Beguiristain, J. Theodore Cremer, Melvin A. Piestrup, Richard H. Pantell, Charles K. Gary, and Joseph Feinstein "Compound x-ray refractive lenses made of polyimide", Proc. SPIE 4144, Advances in Laboratory-based X-Ray Sources and Optics, (2 November 2000);


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