Re: Trinitite

Dude All Messages By This Member #818 开云体育 Geo, That dead time is pretty high. Its best to Set the tube ?current to keep the dead time around 10% or less than 35K cps. First shot should use full voltage then set the Kv’s ?to target the absorption edge of element range of interest? say about 1.5 the times the edge. Use filters for that edge to target the element of interest. ?Good luck sorting out Ba from decay, XRF and that in the soil. Dud ? ? toggle quoted message Show quoted text From: [email protected] [mailto:[email protected]] On Behalf Of GEOelectronics@... Sent: Tuesday, February 18, 2020 1:28 PM To: [email protected] Subject: Re: [XRF] Trinitite ? Now my largest green-glass Trinitite sample tests. Trying to determine the "best" settings to detect good XRF on the Si-PIN sensor: This test is?XRF by X-Ray tube at different kVp levels and current levels.Other tests will use AmX8 exciter and anything else I can think of. All the settings agree, there is considerable barium element present. Some is from Cs-137 beta decay (Ba-137m) and is responsible for the familiar 662 keV peak we all use for calibration. Some could be old fission products and some could have been in the soil before Trinity. A few different X-Ray setting results .mca attached. There should be enough data here to really determine the sweet spot for settings, taking into account peak broadenings, deadtime, and runtime. Geo>K0FF

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