RE: Streamer feeds energy back? (was RE: Streamer V/I and energy balance)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Denicolai, Marco" <Marco.Denicolai@xxxxxxxxxxx>

Hi Boris,

It is an interesting point you are making. I 
measured yesterday the frequency of the current 
oscillations and it is always about 8.75 MHz, in 
each breakdown sample I made. It doesn't change 
with a discharge gap of 0.8 m to 1.4 m.

But I can easily add a couple of meters of copper 
band to GND and check if the frequency drops 
down. I'll do that when I'm back from vacation.

I'm also going to try to implement the discharge 
model proposed by Fofana and Beroual in a series 
of papers. The advantage of it is that it's 
pretty practical and resolved as an RLC circuit 
evolving with time. There is a value update after each streamer/leader step.

I'll be on vacation between 4.8-12.8 so I won't 
be able to read TCL emails. Terry, let them come anyway.

Best Regards

> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: 28. heinäkuuta 2005 15:51
> To: tesla@xxxxxxxxxx
> Subject: RE: Streamer feeds energy back? (was RE: Streamer
> V/I and energy balance)
>
> Original poster: boris petkovic <petkovic7@xxxxxxxxx>
>
>
>
>  >  > Can you alter wiring leads lenght to see how much  >
> influence  >  > it has to the discharge response?
>  >
>  > I can maybe just shorten it some 5 cm (!) but I'm  >
> afraid the stochastic spread of the breakdowns  > will hide
> any changes in the reponse.
>  >
> -----
> Well ,5 cm is really nothing for the experimental check-up.
> And I had on my mind increasing the wiring lenght rather than
> shortening it.
> Should we anticipate that the geometry of the discharging
> path measured from the toroid to the earth is some sort of
> semiclosed loop aprox 4-5 long (gap + pole + leads), correct?
> It is not the same as straight wire but if you consider that
> 5 m  straight wire has cca Fo~15 Mhz...
> It would be interesting to see if increasing the size of
> external distributed circuit brings any changes in streamer
> waveform spectra.
>
> That was my point.
>
> Best regards,
> Boris
>
>
>