After trying many slight thickness variations of Source Filter components, the best result is show in the second picture.
First up is the spectra coming out of the Am exciter source with just a paper alpha blocking filter. That alone made significant improvements at the low end vs no alpha filter. The goal of this project is to apply a filter to the source that will effectively remove most of the low energy component that is caused by Np- daughter and self-XRF of elements in the button, such as Au, Ag, Fe.
Now a filter applied to the source and another Gamma Spectrum ran.
Thanks to member Dudley Emer for the design of the filter elements and thicknesses, based on selective filtering using the K-edge X-Ray absorption effect.
Geo
