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Figure 3
Design and mounting of capillary optics. A precision-bored barrel (a) encloses the glass capillary, which is supported by two location discs of precisely defined aperture. Gentle pressure is applied using a plug with viton cushions to hold the optic in place. A guard aperture to remove parasitic scatter is positioned at the end of the enclosure about 10 mm from the tip of the capillary. The barrel is mounted on a movable base (b) controlled with a piezomotor (red in the lower left) from New Focus, San Jose. A black registration mark on the end of the barrel (right) marks the tip of the capillary and is used for manual positioning. The sample is mounted on the yellow plastic base at the far right.

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ISSN: 1600-5775
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