Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx> At 03:52 PM 2/4/2006, you wrote:
Original poster: Steve Conner <steve@xxxxxxxxxxxx>Bottom line though is that the 25"/Hg that your vacuum pump can attain is only slightlybelow ambient atmospheric pressure.Well, is it 3.5" below atmospheric pressure, or 25" below atmospheric pressure? Either way I doubt you would see any X-rays.
It would be 25" below atmospheric (inches of Vacuum is relative to atmospheric, with the negative implied).. about 100 torr. Not really what one would call high vacuum. Good enough for freeze drying, vacuum bagging fiberglass, degassing, etc.
To get X-rays, the mean free path has to be bigger than the size of the container, as a general rule, and that would be in the sub torr area (more like sub-micron)
Steve Conner http://www.scopeboy.com