On 10/28/2012 01:13 AM, Chuck Harris wrote:
Two things come to mind:
1) is this the high performance tube? Perhaps it has a different
Zeeman frequency than the standard tube?
2) a non HP replacement tube? FTS Cs beam tubes are way different
Zeeman frequencies than HP.
A high performance tube should give you better signal to noise.
A non HP tube might give you a somewhat different C-field setting for
same center lock-in.
The physics of Cs-133 is still the same, and the RF-chain is still the
same. If not, someone has to teach me something new, or at least inform
me why the high performance tubes are so much different.
Cheers,
Magnus
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