| T O P I C R E V I E W |
| mimichris |
Posted - 11/28/2022 : 02:56:18
I have a source of 0.8 uCi which comes from a smoke detector, I do not know its accuracy, but I only have this, how far can this source from the Geiger tube be placed to have a reliable measurement?
I also have a piece of natural U238 and a radium source also from a smoke detector but I don't know its value.
Thanks. |
| 2 L A T E S T R E P L I E S (Newest First) |
| mimichris |
Posted - 11/28/2022 : 07:50:05
with a RHElectronics ver 2.15 Geiger counter and an SBM20 tube at 13mm from the tube: 1.44uSv/h and 256 CPM.
with another Chinese CG-01 Geiger counter tube J321 at 13mm from the tube: 1.70 uSv/h and 240 CPM.
With a RHElectronics ver 1.2 Geiger counter with a tube J305 at 13mm from the tube: 1.70uSv/h and 214 CPM. |
| ullix |
Posted - 11/28/2022 : 03:06:14
Try it out, nothing can go wrong.
Except: if these appear dusty, or pieces may come off, put them in a plastic bag. I would not want to have any alpha emiiter around me, which I could breath in!
With the GMC-500 you could not detect alpha anyway, and enough betas will pass. Gammas will almost not be weakened at all.
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