My power supply blew up shortly afterwards and although I have bought
some new ones (they are only a few pounds) I have not set it up again as
it has been rather overtaken by events
Nigel
On 24/04/2017 02:17, Eric Walker wrote:
On Sun, Apr 23, 2017 at 5:21 PM, Nigel Dyer <l...@thedyers.org.uk
<mailto:l...@thedyers.org.uk>> wrote:
If I remember correctly it was something like that. The counter
had to be very close to register clicks, such that it was
consistent with alpha particles, but it was not stopped by a peice
of paper, which would have stopped alpha particles, but which
would allow through a voltage transient.
I believe paper will allow beta particles through, which will also be
picked up by a GM counter. I assume you were correct in your
assessment that the dV/dT was messing with your GM counter. But I
doubt a piece of paper would rule out everything interesting.
Eric
