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Subject: How to make Mg (K) x-rays
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Date: 03/26/01 at 10:15 PM
Posted by: David OHara
We want to generate Mg (K) x-rays (1250 eV) emanating from a small spot (25 microns) and need the most intense flux from said spot. We can get a grounded filament electron source capable of focusing to such a small spot but need ideas for the anode. Since it will be at HV, rotation or cooling may be difficult. Anyone have ideas concerning unusual anode geometry (conical cavity anodes or others) which might yield high intensity? We would like to seal this x-ray source with 8 micron thick Be foil which means small area. We need only a 7 degree full cone angle out of the source meaning about a 1mm diameter Be covered hole at 1 cm from source. Any suggestions appreciated.
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