There is small labeling?mistake in my tektites and tellurium thermimo xray exciter pic which??I overlooked.
Red??is??my big tektite
Green Mike’s tektite with Rh characteristic hump?
Blue tellurium metal?
On Sunday, August 18, 2024, 8:14 AM, taray singh via groups.io <sukhjez@...> wrote:
Mike
Good input on the scatter study
Well it appears that scattering can accentuate??minor peaks in bg??from outside and within the detector?
Will wait for reply from Amptek
Like to know the purity nature of silicon in si-pin detector
BTW just??thinking what??KV just below??the critical voltage of rhodium anode to??knock off Rh interference in your tektite spectrum?
It will??eliminate the hump below Ba??to large extent?
Thanks
On Saturday, August 17, 2024, 11:16 PM, Mike L. <loughlin3@...> wrote:
Taray,
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As mentioned in my original post,?? I experimented with various samples using an Am241 exciter to study Compton and Raleigh (coherent) backscatter.? The samples were aluminum, copper, and water.? All three showed something near the Te K line at about 27.5 keV.? lt did not appear to vary with the samples at all.? Looking at my results, I think that the big increase in reflected, coherent scatter due to low Z occurs below about 25 keV.?? If you really want to see what the system interference (below 25 keV) is coming from your source, direct it into a distilled water sample.?
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My Aluminum sample was a 6061 alloy, which is pretty clean, metallurgically.? Copper was the only alloying element I saw.
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I think you are on the right track regarding Te.
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