[time-nuts] homebrew H maser
Hal Murray
hmurray at megapathdsl.net
Thu Sep 2 05:36:05 UTC 2010
jimlux at earthlink.net said:
> The gas diffusing out through the drilled bolt.. sure it's drilled, but the
> conductance is so patheticaly low, you're literally waiting until the gas
> molecules happen to randomly bounce their wey up the hole.
I've never worked with vacuum gear.
I assume "drilled bolt" refers to a bolt through a drilled hole so there is
some slop between the bolt and the hole.
Can I use vacuum grease as a seal around the bolt? Or does it outgas too
much if you are going for seriously low pressures?
Can I use a soft(er) metal washer and mash it to a gas tight fit by
tightening the bolt enough?
How low a pressure does a H maser need? Where is it relative to say
fingerprints outgassing?
Is there an easy to understand scale of difficulty? (like dishes rattle for
the Richter scale)
--
These are my opinions, not necessarily my employer's. I hate spam.
More information about the time-nuts
mailing list