Cs137 at 32 keV is what I calibrate to.? Putting an elemental Ce material next to Am241 might be interesting though.

El dom., 21 de oct. de 2018 a la(s) 13:59, <GEOelectronics@...> escribió:

Very interesting Charles. Normally I discount self-XRF ideas but your scans make a compelling argument. Will look into that in future...

Meanwhile you can get some elemental cerium (glass polish etc) and irradiate it with a weak source, to make a pure, clean set of Ce K lines for you calibration setup. This is one of the really helpful aspects of XRF, make your own absolutely precise spectrum lines!

Geo