59.5keV spectrum cleanup
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Good info, I can try those K-edge filters, will report back. From: "DFEMER" <dfemer@...> To: [email protected] Sent: Tuesday, October 27, 2020 2:00:57 PM Subject: Re: FW: [XRF] 59.5keV spectrum cleanup Geo, These Am and Np peaks are monochromatic having discrete energies not the broad bremsstrahlung you get from a X-ray tube. The tube¡¯s characteristic lines are also monochromatic. The issue is getting rid of the Np lines which van be done with a source filter. To optimize the 13 ¨C 17keV range of the Np lines from the source you would use 150 um Cu , 25 um Ti, and a 300 um Al filter. At 20 keV just a 0.3mm Al filter would reduce that original count to 6%. At 17 keV it would be a 1% reduction. ?Remember that the Np lines are also acting as a source for xrf of the lower Z ?elements. When using a tube source you would run 3 tube voltages 50, 40 and 15 or so to the maximize each energy region of interest. ? Dud ? From: [email protected]
[mailto:[email protected]] On Behalf Of GEOelectronics@... ? "The x-ray tube has a broad energy range while you have a
monochromatic source." ? This is the source we all have, it is not monochromatic: ? |