JP, aha, ok, I see, I didnt know Bickel principle worked on ions, ions in the mix takes this whole thing to a whole new different dimension

. of course it would be best to point directly downwards for best detection. But, if it was simple EM waves radiating from the gold source as I originally thought , then, an omni field would exist instead.
It seems gamma spectroscopy isnt too much expensive or far, but remotely detecting the gamma seems very very far from our reach

. I hope I am wrong
Karl