[time-nuts] Re: Passive maser update 7

[Ed Marciniak]

This is awesome to see. It’s great mind food.

The first question I have is whether the cavity resonance is really shifting from the gas within, or whether it’s simply being crushed by the lack of air pressure.

If you were to put it into a 55 gallon plastic drum with a V band clamp and simultaneously pump both down, and my theory is correct, the pressure change shouldn’t cause frequency change. You wouldn’t be able to take all of the atmosphere out, but even a 2% drop ought to be doable ought to be easily observable. Letting air back into the drum would then show the pressure shift. Or you could even pressurize the drum slightly and see the shift increase.

My rationale is that 100 microstrains while seemingly tiny is not completely insignificant with the precision you require.

-Ed
NB0M

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________________________________
From: Corby Dawson via time-nuts <time-nuts at lists.febo.com>
Sent: Friday, February 3, 2023 5:18:29 PM
To: time-nuts at lists.febo.com <time-nuts at lists.febo.com>
Cc: cdelect at juno.com <cdelect at juno.com>
Subject: [time-nuts] Passive maser update 7

Passive maser saga, Update 7 is here:

http://www.leapsecond.com/maser/UPDATE7.pdf

Cheers,

Corby
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