[time-nuts] It is possible to "recharge" a hydrogen maser?

[EB4APL]

The H maser that we had at NASA-DSN in the 80´s had a small H2 bottle 
which supplied it to the palladium valve, so it could be refilled. We 
never needed a refill but once we had to open the plumbing, it was 
necessary to reestablish the vacuum before opening the H2 valve. it was 
done using a mechanical pump and then a (then unknown to me) "molecular 
sieves" pump that was chilled with a bucket of liquid N2. The procedure 
was quite convoluted.

Regards,

Ignacio


El 05/07/2019 a las 16:11, Luiz Paulo Damaceno escribió:
Hi friends,

We have a hydrogen maser here at the university that i work. It seems the
hydrogen is over. This is possible? If yes, It is possible to recharge It?

Best regards,

Luiz.
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