From: "John Franke" <[EMAIL PROTECTED]> Subject: Re: [time-nuts] Home built Ammonia cell std !! / Home built cesiumclocks??? Date: Sun, 29 Jun 2008 14:02:06 -0400 Message-ID: <[EMAIL PROTECTED]>
> No, I am talking about the 1948 gas absorption design by Lyons, not the > ammonia MASER. There is no state-selection. There is no flowing gas > molecules. There is no quadrapole device. It is a simple oscillator locked > to the attenuation dip in an absorption cell. Once built, there is no gas > replenishment or need for additional pumping. But, the accuracy is limited. > By the way, Lyons cell path was 25 feet not 33 feet as I had thought. Sorry, my bad. I suspect wall-pulling is significant. Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
