[time-nuts] So what’s inside that Cs Beam Tube anyway?

Richard (Rick) Karlquist richard at karlquist.com
Wed Nov 2 20:01:13 EDT 2016

On 11/2/2016 10:23 AM, Tom Van Baak wrote:
> Hi Rick,

> You know the famous 1971 Hafele-Keating experiment with four 5061 cesium clocks flying around the world. Several years later, a more precise measurement was made by Carroll Alley using better clocks. What I read is that he got Len Cutler to hack the 5061A so that its beam current would be higher, thereby improving performance for the duration of the experiment. Same tube, just different operating parameters.

Never heard that story.  You gotta love it:  a hot rod atomic clock.


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