Radioactivity detection using very simple ionization chamber and a single J-FET transistor
Today I will show a very simple ionization chamber that can detect radioactivity. I was able to detect with itΒ ionizing radiation from a smoke detector (Am241Β isotope). Itβs also immune to electromagnetic interference (EMI) due to a good shielding. This device doesnβt explicitly use any power supply. Itβs connected to a multimeter set to measure resistance, […]