¿ªÔÆÌåÓýAm is not cleaner than a tube with all the Np interference. A tube allows you to target the K edges and functions to selectively target a Z range of elements. To do that with a isotopic source you need to change sources Am for high Z, Cd? or Co 57 for the lower Z¡¯s. The choice of a sealed source is targeted for the elements of interest same for a tube anode. There are advantages of using a sealed source with monochromatic energy but that is usually application specific like looking for layers of Pb paint with Cd-109.? Sealed sources are in the mCi category to get the intensity needed for a good count while tubes are dial-dose. Dud ? From:
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Behalf Of GEOelectronics@... ? Taray I'm experimenting with a tube generator for education, and that's the "beam". Otherwise I use the AmX8 extensively. It is still the best way from a number of standpoints, and I will continue trying to improve the arrangement. The 59.5 is higher than 50kV max on these small tube generators, and infinitely "cleaner" than a tube. ? Unfortunately the AmX8 is not as powerful as tube, so the skimming is not working as well. Pic shows the same old sources that started this whole thing, each with only 8 pcs. More or stronger does not help much, getting the rays in the right positionand angle s more important. ? ? ? ----- Original Message
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From: taray singh via groups.io <sukhjez@...> To: [email protected] Sent: Sat, 30 Jan 2021 11:41:49 -0500 (EST) Subject: Re: [XRF] Supplements exposed :filling materials of pharmaceuticals ?
This thing is very sensitive??indeed The size,distance??and??Z of??any mount or base matters??besides the Am button arrangement? ?I have removed all supporting clips now ?I am using an old cardboard box as platform??so that it??is sufficiently far??from my ceramic tiles My tiles were shooting Zn peaks. I hope any recycling stuff???from the box is not causing any contaminations either? My room is ?small and?cramped up. So I use the floor instead??as a base. I think it appears to be better now Anyway I am still??seeing Fe in my aspirin pills? No I have tried any Fe pills or foodstuff. Very interesting using such small amounts?? with small sensor windows? Are u using Am or X ray? Nice if you??could??show us the setup??once you get it going. ? Taray
On Saturday, January 30, 2021, 10:59 PM, GEOelectronics@... wrote:
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