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SolarSurveyMonitor
Mexico
14 Posts |
 Posted - 04/29/2019 : 17:33:24
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It is known that some gas mantles are radioactive. I managed to found some of them, however, as I searched lately, those are doped with Thorium dioxide. The mantles are in a sealed plastic bag, and with GMC-300E+ 4.50 measures 660 to 780 average CPM. If I separate the counter, more than 2 or 3 cm, it decreases drastically.
Few doubts I have:
1. With plastic bag, filters out all alpha particles?, next
2. With same above, but now wrapped with aluminum foil, should block beta particles right?, and
3. All above plus a steel sheet of 0.8 ~ 1.0 mm, must block alpha and beta particles and only pass gamma rays?
Should I still keep them in their bags or it is needed more shielding?
I will provide photos if needed, any foreword is welcome meanwhile.
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Radioactive gas mantle and storage
