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- W2021839896 abstract "Focusing and collimation of 8 keV x rays has been demonstrated using microchannel plate (MCP) blanks with cylindrical channels. The focusing effect arises from total external reflection of x rays at the interior surfaces of the channels of a MCP and has been described previously by the authors. Point to point focusing was observed with flat and curved MCPs, and collimation from a point source to a quasi-parallel beam was observed with a curved MCP. Intensity profiles at the image plane and at other planes behind a flat MCP were obtained for a 20 × 40 μm2 x-ray source, and agree well with theoretical predictions. The flux in a 40-μm-diameter collector in the image plane was compared with the flux in the same plane, but without a MCP. The relative gain in flux increases linearly with the source to MCP distance, as predicted. A maximum relative gain in flux of 18 ± 1 was observed for a source to detector distance of 50 cm." @default.
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- W2021839896 date "1990-01-01" @default.
- W2021839896 modified "2023-09-26" @default.
- W2021839896 title "Focusing and Collimation of X Rays Using Microchannel Plates: An Experimental Investigation" @default.
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- W2021839896 doi "https://doi.org/10.3233/xst-1990-2203" @default.
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