Re: Short video clip of 18" x18" Lichtenberg Figure being discharged (fwd)

["High Voltage list" <hvlist@xxxxxxxxxx>]

Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Thu, 01 Mar 2007 09:12:39 -0600
From: Bert Hickman <bert.hickman@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Short video clip of 18" x18" Lichtenberg Figure being discharged
    (fwd)

Dave,

Sounds interesting - please contact me off list to familiarize me with 
the mechanics/details of X-ray film cassettes (physical size, how to 
load and where to get them developed, etc...).

I assume the exposed side of the container uses a relatively thin 
plastic material? If we interposed a thin grounded metal foil or screen 
between the specimen and the cassette, we should be able to suppress any 
HV transients and prevent Kirlian discharges to the film without too 
much blocking of lower energy X-rays.

It certainly sounds like something to try during a future production run!

Bert


High Voltage list wrote:
> Original poster: Steven Roys <sroys@xxxxxxxxxx>
> 
> 
> 
> ---------- Forwarded message ----------
> Date: Tue, 27 Feb 2007 22:25:02 -0500
> From: David Speck <dave@xxxxxxxxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: Short video clip of 18" x18" Lichtenberg Figure being discharged
>     (fwd)
> 
> Bert,
> 
> Perhaps you might consider placing a X-ray film cassette under the 
> Lichtenbergs before discharging one, or a number of similarly shaped 
> ones.  If the discharges were making any X-rays, you might see an image 
> on the film.  I have a couple of old cassettes if you want to try.  I 
> don't know how sensitive they are, but they would be a start. 
> 
> Of course, you might have to take precautions against seeing some sort 
> if Kirlian image formation.  With the energy densities and strong fields 
> involved, preventing that might be challenging. 
> 
> Any chance of posting the video of the irradiation process?
> 
> Thanks,
> 
> Dave
> 
> High Voltage list wrote:
>> Original poster: Steven Roys <sroys@xxxxxxxxxx>
>>
>>
>>
>> ---------- Forwarded message ----------
>> Date: Tue, 27 Feb 2007 11:26:43 -0600
>> From: Bert Hickman <bert.hickman@xxxxxxxxxx>
>> To: High Voltage list <hvlist@xxxxxxxxxx>
>> Subject: Re: Short video clip of 18" x18" Lichtenberg Figure being discharged
>>     (fwd)
>>
>> Dave,
>>
>> Interesting question - possible x-ray generation via runaway electrons! 
>> We didn't think to bring radiation measuring equipment. Unfortunately, 
>> the only radiation measuring device I have is a Geiger Counter, and it's 
>> unlikely that this would have detected any short x-ray pulses during 
>> discharges, if they existed.
>>
> 
>