Re: Micro SSTC + light bulb = plasma globe. Safe( xrays ) ?

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Original poster: "Hydrogen18" <hydrogen18-at-bellsouth-dot-net> 

Thanks alot for this info. I guess my flash tubes arent argon like I was
thinking. Is the gas inside the bulb below or above atmosphere pressure? I
am going to leave this thing running for a while and keep my distance to see
if it can actually destroy a bulb.

---Eric
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, July 28, 2004 11:58 AM
Subject: Re: Micro SSTC + light bulb = plasma globe. Safe( xrays ) ?


 > Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net>
 >
 > At 07:06 AM 7/28/2004 -0600, you wrote:
 > >Original poster: "Hydrogen18" <hydrogen18-at-bellsouth-dot-net>
 > >I looked around a little and it seems that if you heat the enviroment and
 > >emit HV at the same time(I'm definetly doing this) as well as provide
 > >another plate for the electrons to hit you make x rays. Since I do not
have
 > >the receiving plate it eases my mind some, as do your comments on
puncturing
 > >a bulb. Thanks. Btw, can someone explain why the plasma is more intense
in a
 > >vacuum with HF HVAC than in free air(it is a better conductor)?
 > >
 > >---Eric
 >
 > X-rays are unlikely except in a vacuum.  HV and Vacuum is the combination
 > that raises the x-ray hazard.  No, you don't need a plate for the
electrons
 > to hit... anything they hit causes them to slow down, which is what causes
 > the radiation (called bremsstrahlung.. braking radiation in German), just
 > metal works real well, and can conduct away the heat that results (most of
 > the energy goes into heat, and a very little bit goes into the Xrays.
 >
 > Large CRTs are heavy, in part, because the faceplate is loaded with lead
 > oxide (for strength and shielding)
 >
 > Lightbulbs (except very low wattage, 25W) are filled with argon or
 > nitrogen, typically (it keeps the tungsten on the filament from
evaporating
 > as quickly), and, so don't present much of a radiation hazard (i'd worry
 > more about breaking and imploding or exploding)
 >
 > Plasma is more intense at low pressures because it's easier to ionize the
 > gas and keep it ionized.  In a dense gas, the ionized, energetic atoms
tend
 > to hit other cold atoms and lose their energy.
 >
 >