I'm not sure what you mean there, I think the arc, or the detection event in a GM tube can be considered 'low' resistance.
I'd like to re-establish credentials as to why we're discussing this on LTSpice's forum.?
1) to show interest in spark gaps, arresters, neons, GM tubes -? what simulation models exist, what's missing and might be nice to have or to develop.?
2) how they are used - I can offer some detail on GM tube drivers, real measurements,?
3) maybe a simplified model for the GM tube as a narrow pulse current sink, enough to discharge its [3pF] capacitance by 50-100V? - in a time that I can confirm by measurement?
4) perhaps evaluate the "quench" circuit mentioned above - is it faster than the tube, does it work, is it any benefit??
5) provide a locus for any future enquiries about this sort of thing.?
6) Ideally, find a poor mans Geiger tube that works well enough and doesn't cost ?300
A basic GM tube spec is here:?https://www.jameco.com/Jameco/Products/ProdDS/2210141.pdf
They recommend 10Meg anode resistance, with their 3pF tube capacitance that's an RC of 30us, which is in keeping with the quoted minimum recovery time of 90us (3xRC).?
I'm guessing the volts drop from V_operating [500V] to V_min [325V] minus a bit, so a swing of 200V, 250V, to guarantee the tube quenches.?
The magnitude and duration of the ionisation current is not specified, but its quick compared to 90us, I'll measure it if I can't find a published figure.?
Bonkers