[time-nuts] Zeeman frequency oddness

J. Forster jfor at quikus.com
Sun Oct 28 00:48:26 UTC 2012


Is there perhaps a hemisphere jumper for the sign of nulling fields?

-John

==========



> 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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