So, George, do you think that if I had, say, 10 Am241 buttons mounted on a lead ring as described in this article that it would be in any way equivalent to an xray tube in terms of exciting XRF in my minerals and competing with the internal radiation?? Of course, I know I need a detector with more resolution in the low energy xray area as well.
Attached is a page from Glenn F. Knoll's "Radiation Detection and Measurement".
I ran across this about 18 years ago and have used it in practice many times since. Eventually this little article morphed into my interest in XRF and the development of the RAPCAP etc.