[time-nuts] homebrew H maser
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
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.
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