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Re: vacuum spark gap ( and Xrays)
vacuum + high voltage = xrays
The saving grace is that with low voltages (say 10-20 kV) the xrays will be
pretty "soft" (i.e. low energy) and can be fairly easily shielded. But yes,
this IS a signficant concern for vacuum spark gaps. Not a whole lot of
difference between a cold cathode x-ray tube and a spark gap in a vacuum,
except perhaps the distance between the electrodes.
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Friday, May 12, 2000 1:50 PM
Subject: Re: vacuum spark gap ( and Xrays)
>Original Poster: "Michael Cox" <95moc-at-kings-school.co.uk>
>
>Hi all,
>
>I dont really know much about this, but I saw a demonstartion last year in
>whi9ch X-rays were produced by puting a high voltage across an evacuated
>tube. This sounds worryingly similar to your vacuum spark gap.
>
>Does any one out there actually know anything about this phenomenon and
>should we be wary of using vacuums with high voltages?
>
>cheers
>
>Mike
>
>
>
>At 16:45 11/05/00 -0600, you wrote:
>>Original Poster: "Jim Lux" <jimlux-at-jpl.nasa.gov>
>>
>>I believe that some have built small coils using the Victoreen Vacuum
Spark
>>gaps used for surge suppression.
>>
>>
>>>
>>>
>>>Very interesting response. And it supports what some people say, and
>>>contradicts what others say, just like the returns on my internet search
>>>(the biggest point of contention is that some people say that a spark
won't
>>>jump in a vacuum and other people, like you, say it will) . My opinion is
>>>that a sealed vacuum spark gap can be very good in tesla use. When I
build
>>>it and have something to report (brag about), I will post the results
here.
>>>
>>>Regards, Alfred Erpel
>>>
>>>
>>>
>>
>>
>>
>>
>
>
>