Re: strength of vacuum

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Crow Leader" <tesla-at-lists.symmetric-dot-net> 

That's a hard vacuum, and from what I'm being told, pretty hard to get. The
vacuum pro I chatted with (I got a difusion pump to make tubes at home) said
you need to bake out anything you are evacuating for hours, use materials
that don't outgas, have correct diameter tubing to your pump, and you may
still never get a vacuum anywhere near the rating of your pump. Unless all
your parts are glass/ceramic and metal, you won't get a vacuum that hard
anyways.

KEN


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, October 31, 2003 12:41 PM
Subject: strength of vacuum


 > Original poster: "RIAA/MPAA's Worst Nightmare" <mike.marcum-at-zoomtown-dot-com>
 >
 > I was thinking of encasing my big HV stuff/tesla coil in vacuum as opposed
 > to oil (heavy in 15+ gallon quanities). Anyone know what the dielectric
 > strength of  a 1.5x10E-7 micron vacuum is? Is there a formula to calculate
 > it from a known micron level (below the glow discharge region of 1-1000
 > microns)? This is the lower limits of my 2-stage rotary/turbomolecular
 > setup (probably the only way to get a better vacuum is to go out into
 > interstellar/intergalactic space and open a jar). I was also going to make
 > some vacuum pulse caps (RF lossless and nearly indestructable other than
 > from a vacuum leak), but with a k of 1, I need to get the plates as close
 > as possible for a given voltage.
 >
 >
 >