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Re: Beading caught on film.

Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

Hi, one of the pix i took of my coil working here at the mill(dusty place)
thot it was reflected immage from lenses and tossed it. when working with
TEA lasers years ago we had a lot of problems with dust being hit by the
beam and consequently discharging the beam energy. there were some 15,000
frame per second pictures taken, and i remember there being some beading. i
wunder if its a small streamer made of short hops between dust particles?
perhaps the burning of those particles helped keep the beaded chain going?
the lasers were infared mode power levels above 5,000 joules 30 to 60
picosecond discharges. cul brian f.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, May 03, 2005 9:04 PM
Subject: Re: Beading caught on film.


> Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi Mike,
>
> I may have seen one little bead shown here:
>
> http://hot-streamer.com/temp/bead.JPG
>
> It is at the very end of the streamer.  I thought it might just be some
> tiny flying bug that bought the big one, or a flake of dust burning up.
>
> It was a pretty hot arc that the camera sort of missed.  But the little
> bright spot sure seems odd.  I pulled the high res original and this is
> what it looks like as close as the pixels allow:
>
> http://hot-streamer.com/temp/bead-01.JPG
>
> But I don't seem to see them much with the eye.  I wonder if it is some
> long time frame effect???
>
> Don't know what it is...
>
> Cheers,
>
>          Terry
>
>
> At 06:38 PM 5/3/2005, you wrote:
> >Hi All,
> >            Going through the pictures, this one
> >is a photo made off one of the 16 mm frames, caught a discharge
> >in the beading mode. Another strike hits plane elswhere but the
> >beading is of more interest, see topof picture.
> >www.hot-streamer.com/mike2004/Beading3.jpg
> >
> >Mike (Re-Posting this, prior sent 2:46 AM Eastern, May 3, 2005, never
made it)
>
>
>