From: "Mark S. Rzeszotarski, Ph.D."
Date: Fri, 06 Oct 2000 05:51:39 -0500
Subject: Re: [TSSP] Progress report 28th Sep 2000
Hello All: At 08:51 AM 10/06/2000 +0100, you wrote in part:>On gap losses, > >I won't go too far into this topic, since I don't know what I'm >talking about! But just one question, perhaps gap conduction >characteristics would be easier to measure in steady state >conditions, using a CW source of a hundred watts or so, stepped >up as necessary, by which the gap AC impedance could be measured >more directly? A bridge arrangement perhaps? This might avoid some >of the difficulties inevitable with the monitoring the transient >ringdown and would eliminate the unknown losses of the impulsed >primary L and C. I have taken a number of gap loss measurements and am beginning to get a handle on them. You cannot simply scale results up since the gap resistance is inversely proportional to the total charge used in the discharge. There are also residual ion considerations which vary as the temperature of the plasma varies. I am looking at gap losses using single shot experiments at typical tesla voltages. When I get more experimental data, I will let the group know what's going on. I have also been doing a number of computer simulations based on coupled lossy LRC circuits and have recognized how important primary losses are in impacting output energy. I am now looking at peak energy coupled into the secondary rather than peak voltage, since it appears to have a better relationship with spark length. I would like to hear the group's comments on this. Mark S. Rzeszotarski, Ph.D., MetroHealth Medical Center,Radiology Department, Cleveland OH 44109-1998
Maintainer Paul Nicholson, paul@abelian.demon.co.uk.