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Great results, we can't wait to see whyat yopu come up with next Charles/ With NaI(Tl), Cs-137 @ 662 is pretty much the standard where quality is tested, for these silicon nand cadmium detect5ors the benchmark is 5.9 keV, the Ka peak of Mn. This can be had either by exciting Mn directly ( scrap a dead carbon-zinc cell for several? kinds of nearly pure elements!) or by obtaining a Fe-55 source from SpecTech. Cd-109 is a good source too, for its silver Ka peak,(22.16) but now my disks are old, I just use a silver "stamp" and excite it with the RAPCAP/ Geo ----- Original Message ----- From: Charles David Young <charlesdavidyoung@...> To: [email protected], Mike Loughlin <loughlin3@...> Sent: Tue, 07 Jan 2020 13:42:31 -0500 (EST) Subject: Re: [XRF] Tritium with Amptek Si-PIN vs NaI And here is an XRF of a Nb disk that George provided me that is being excited by a single Am241 button.? I have included a photo of the setup. The Am241 is glued to a lead strip and is pressed up against the Nb disk in a baggy.? The red Si-PIN protective cap is peeking out below just behind the lead strip.? As you can see the Nb Ka and Kb peaks are very clear and there is hardly a trace of the normal Np peaks from the Am241.? For comparison I have included that same Nb scan alongside an Am241 scan that is not shielded (blue) It really is amazing how nice an exciter Am241 is when it is properly shielded and placed in front of the target. Charles On Tue, Jan 7, 2020 at 10:59 AM Charles David Young <charlesdavidyoung@...> wrote:
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