Re: Streamer formation on the scope...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

I was thinking about modeling the spark as a transmission line, but I 
hadn't even thought about the surface propagation modes of the toroid 
itself... you're right, mindbendingly complex.  Clearly a good application 
for a FEM code of some sort (FDTD?), rather than trying to come up with an 
analytical solution.  The saving grace might be that high order conductive 
modes could get killed off mighty quick by the losses due to skin effect, 
although surface wave and evanescent modes aren't as affected by surface 
losses.


At 04:11 PM 9/6/2002 -0600, you wrote:
>Original poster: "Paul Nicholson by way of Terry Fritz 
><twftesla-at-qwest-dot-net>" <paul-at-abelian.demon.co.uk>
>
>Jim wrote:
>
> > I think that quasistatic approximations (the 220K+1pF/ft) kind of
> > approximation works nicely for large scale modeling (i.e. fRes
> > calculations).  But, for dynamic effects such as streamer growth,
> > we need some sort of model for the actual streamer.



>I'm left totally awed contemplating the surface modes of a toroid.
>Those of a sphere are interesting enough!  Still a 2d surface, but
>the hole in the middle splits the modes into those that link the hole
>and those that don't.  A rich subject to which some very modern math
>could be applied, if only it were comprehensible. :)
>--
>Paul Nicholson
>--