[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)




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These are my opinions, not necessarily my employer's.  I hate spam.






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