Re: FW: [XRF] 59.5keV spectrum cleanup
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From what I know about XRD it requires careful preparation of the sample.? I know grinding is involved.? Interpreting the results is also not as straightforward as XRF.
For now, the XRF is working exceptionally well.? My hobby consists of a narrow niche of mineral collecting.? Between the XRF, the appearance of the mineral, and the minerals reported from the area I can determine with some confidence the id of a specimen.
Charles
I agree, and we can't expect anything below ~2keV in air, but what this shows me is with a helium atmosphere, we could have a shot at down to 1. ?I tried propane (once) and it changed things, bit of course is not practical, just as hydrogen is not practical. Vacuum is best, but at this time it's not in the cards for me.
Charles have you considered XRD for your minerals? If so check out the Tel-X-Ometer unit. I have several of those waiting a turn in the counting room. The way XRD works baffles me but it seems to be a very popular mode for determining crystal structure and maybe oxidation states (?). No immediate plans to do so but have used the internal copper-target X-Ray source in it many times for other purposes. Switch selectable 20 / 30 kV at 80uA. These have an integral goniometer, and the ones I get usually have that part damaged by corrosion due to leaving salt crystals in it when stored (they are a college teaching tool).
Geo
----- Original Message ----- From: Charles David Young < charlesdavidyoung@...> To: XRF < [email protected]> Sent: Fri, 30 Oct 2020 10:53:09 -0400 (EDT) Subject: Re: FW: [XRF] 59.5keV spectrum cleanup
It just looks like noise to me.? I would have to see a lot more counts and reproducible runs to believe it.
Charles
forgot the picture: ![19.2us_U_L_X-Rays.png]()
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