[time-nuts] Home built cesium clocks???
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
The biggest hurdle may be coating the storage bulb.
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