11 November 1994 Conical foil optics for the collimation of soft x rays
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Abstract
Physitron has constructed a grazing incidence nested optic designed to collect and collimate a broad energy bandwidth of diverging soft x-rays (nominally 1.5 keV) emanating from a point source. Although this optic was designed to collimate rather than focus x-rays, our optic is similar to the nested conical foil x-ray telescopes which have been constructed and successfully used by NASA. Key differences exist between our optic and NASA's telescopes. First, the aperture of our optic is 28 cm2 which is considerably smaller than NASA's telescopes. Second, the reflectors in NASA's telescopes are contained in an annular ring, leaving the middle of the optic open. Our optic has a much smaller open area at its radial center. These differences required an innovative fabrication technique in which the reflective rings are formed as complete rings from lacquer-smoothed aluminum foil instead of forming the reflectors as quadrants as in NASA's technique. This paper will discuss the key design considerations and procedures for the collimator in addition to a description of the fabrication technique used.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Samuel L. Espy, David B. O'Hara, Scott Scarborough, Melvin L. Price, "Conical foil optics for the collimation of soft x rays", Proc. SPIE 2279, Advances in Multilayer and Grazing Incidence X-Ray/EUV/FUV Optics, (11 November 1994); doi: 10.1117/12.193128; https://doi.org/10.1117/12.193128
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