Gamma Spectrometry Forum

Dear colleagues,

I would like to ask for your help. I measured the gamma spectrum of uranium glass using my gamma spectrometer and obtained the following spectrum. The radionuclides I was able to easily match to their corresponding peaks include U-235, with peaks at 143.8 keV and 185.7 keV, as well as Pa-234m, with peaks at 766.4 keV and 1000.9 keV. A small peak at 511 keV corresponds to the annihilation peak. With slightly less confidence, I assigned peaks at 112.8 keV and 258.3 keV to U-238, but I’m not entirely sure if this is correct. However, the peaks at 34, 67, 80, and 96 keV are a complete mystery to me. Some of them could be due to lead fluorescence (perhaps 80 and 96 keV?). Could you take a look at the spectrum and share your opinion?

Thanks!

More details are at http://www.scintillix.com/index.php?id= ... nium-glass

Dear Milos,
The peak @34 keV is most likely from x-rays
@67 keV I guess you have Th 234 (63.28 keV)
@80 keV you have Pb fluorescence as you also proposed
@96 keV - Th 234 (92.59 keV)

Greetings,

Hi Svilen,

Thank you for your suggestion.

Regards,
Milos