On Sun, 29 Apr 2012 13:19:08 -0700
ed breya <[email protected]> wrote:
> If the Rb cell "drifted" enough (maybe if it was filled with water)
> to de-tune the mechanical cavity resonator, it wouldn't work at all.
> Only a small amount of the RF power in the cavity is coupled into the
> Rb gas. The bandwidth of the Rb resonance is a fraction of a Hz (Q in
> the millions), while the bandwidth of the cavity is probably 20-50
> MHz, (Q may be up to 100).
Not quite true. While the theoretical line width of Rb is very small,
the line width of a Rb gas cell is in the range of 100Hz to 100kHz,
depending on the size of the cell, wall coatings, the buffer gas type,
the pressure and temperature.
Attila Kinali
--
Why does it take years to find the answers to
the questions one should have asked long ago?
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