 Observations on diurnal indoor variations in gamma ray count rates
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radhoo
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Registered Member #1938
Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 699
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Some interesting results, following Richard's research on diurnal indoor variations in gamma ray cpm:
"Conclusion and comment
* A small magnitude diurnal fluctuation in gamma count rate was observed in the 18-day aggregated data although this was hard to spot day to day in the raw data. This seems broadly in line with published data for outdoor observations.
* An obvious limitation to the interpretation of this data is that the absolute magnitude of the diurnal variation in count rate is small (range approx 0.45 cpm) compared with the standard deviation for the data c 0.3 cpm) so the findings may not be statistically significant.
* Replication of the experiment with a longer period of observation will reduce the dispersion in the data and allow for more confident interpretation."
Full article here: 
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Conundrum
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Fri Sept 12 2014, 03:30AM
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Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
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Also occurs to me that you might (maybe) be sensing what I suggested shortly after reading this, ie an effect of solar axions on radioactive decay of some nearby widely distributed isotope.
40K is likely to be the culprit as it has a very long (BY) decay and more likely to have quantum mechanical effects that would show up anything strange going on.
A good test for this would be to put the 40KCl crystal/tube setup near a working fusion reactor (fusor) behind lots and lots of shielding, then run it at X-ray only mode and above the fusion threshold voltage to see if there is any detectable difference.
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