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nice experiment!
160ms 65KV 7.5mA resulting in an accumulated total dose of 0.038uSv? What was the distance from the head to the detector?
Those are the numbers I recorded.
About 1-2 cm, pointed as good as possible to the center of the GM tube.
I’ll do some calculations on this later. Wish Stella was here to add some input. Good old 4HV days.