Re: Trinitite
¿ªÔÆÌåÓýThere is quite a big mass difference between a piece of DU and the little amount Pu decay in the Trinitite. There can also be a big difference in detector efficiencies. Dud From: [email protected]
[mailto:[email protected]] On Behalf Of GEOelectronics@...
Sent: Friday, October 23, 2020 4:55 PM To: [email protected] Subject: Re: [XRF] Trinitite ? Of course I agree. But given the very accurate ICP-mass spectrometer analysis of this material made by national labs, not by a youtuber, what known isotopes would cause these particular 3 X-Ray combinations and obvious intensities? Don't forget to factor in half-life of precursor- I see two. Pu-2xx and Pa-234m (and a tiny fraction Pa-234). ? By the way with a different sensor, I'm struggling to find?185.71 from U-235. Even with the best grade of DU, you still see the residual 185 peak. Geo ? ? From:
"DFEMER"
<dfemer@...> ? Suppose your Pu is Pu-243 you¡¯ll get an Am decay x-ray Pu-239 a U x-ray. If its Np-234 you get a U decay x-ray, if its Np-237 it¡¯s a Pa x-ray. For Pa-234 you get a U x-ray if its Pa231 you get an Ac decay x-ray etc.. Gamma rays are unique for ID, decay X-rays change with mass number. Dud ? From: [email protected] [mailto:[email protected]] On Behalf Of GEOelectronics@... ? " A Pu decay U x-ray looks like a Pa U decay x-ray or any other U x-ray" ? I mentioned Pa-234m decay to U-234 before.?Pa-234m decay can be eliminated by the lack of other peaks at the appropriate places. ? ?What are some other examples? ? Geo ? From:
"DFEMER"
<dfemer@...> ? That was not missed by them even though it¡¯s a wet chem. Pu extraction aliquot, but you cannot assign these x-rays to any particular source. So its labeled a U x-ray not Pu. ?A Pu decay U x-ray looks like a Pa U decay x-ray or any other U x-ray ¨C you can¡¯t say the source. A gamma ray will ID the source not the decay X-ray. You don¡¯t know, what you don¡¯t know, you know,. Dud From: [email protected] [mailto:[email protected]] On Behalf Of GEOelectronics@... ?
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