In reply to Bill Antoni's message of Fri, 3 Dec 2021 02:21:19 +0100: Hi, If you put your detector in a well grounded Faraday cage, it may eliminate most radio interference produced by sparking. Use metal (not nylon) fly wire for the Faraday cage (or at least for a window if you prefer the whole cage be made of metal sheet). The space between the wires is small enough to shield most EM below about 150 GHz, but alpha, beta, or gamma should get through easily. I suggest you add a little credit card sized microprocessor to the detector, that can run on batteries for a few hours, and can easily be included in the Faraday cage, with no protruding wires. The microprocessor can log the counts, and the time, and store it on a microSD card for later use. (Protruding wires would act as an antenna, for the EM, defeating the purpose of the Faraday cage.)
BTW to eliminate the Radon, just make the experiment portable, and take it elsewhere. Also let the detector run for a while before the experiment starts, so that you get a good indication of average background radiation. [snip] Regards, Robin van Spaandonk <mixent...@aussiebroadband.com.au>
