[time-nuts] Home built cesium clocks???

Bruce Griffiths bruce.griffiths at xtra.co.nz
Sat Jun 28 18:27:43 EDT 2008

Predrag Dukic wrote:
> Microwave components are now cheap and easy to fabricate (thanks to 
> millions of GSMs GPSs and sat receivers).
> Optical pumping/detection is difficult because optical frequencies 
> (hundreds of THz)  have to be accurate and stable within 100khz (1 
> MHz at worst).
> Cesium itself is also difficult part: It has to be extremely pure (N6 
> or better), and filling it without contamination....could be tricky.
> Predrag Dukic


It would appear that constructing one's own hydrogen maser would be 
easier since purifying the hydrogen via a heated nickel or palladium 
leak is much simpler.
Also the vacuum hardware is simpler and there is no need for a caesium 
detector etc.

The biggest hurdle may be coating the storage bulb.


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