Hi,
Buffert gas slows down the rubidium atoms, which increases the Q value.
Already that is an important factor in the performance of rubidiums.
Then, the inevitable wall-shift can be first degree compensated by the
buffer gas mixture, and in there can the details of the RF synthesis be
compensated to suitable range.
Toss in the concerns of modern times that Bob mentioned and you start to
see that it is quite a few issues in there.
Also, the buffer gas in the lamp and in the reference cell is two
separate things.
Cheers,
Magnus
On 05/05/2013 02:48 AM, Bob Camp wrote:
Hi
Buffer gas combo's are he voodoo of Rb cells. You can fiddle them to impact the
temperature coefficient of the cell. They can also improve the degradation from
impact with the cell walls. The Efratom boys came up with a way to improve
filtering with a buffer gas mixture.
Bob
On May 4, 2013, at 8:37 PM, Mark Spencer<mspencer12...@yahoo.ca> wrote:
Hi, while skimming some articles I found re GPS satellites, I found some
references to certain buffer gasses in Rb cells working much better with
optical filters than others. As far as I know Rb buffer gas formulations are
not disclosed by the manufacturers so I suspect this info may not be very
actionable for those of us looking to improve our Rb's.
This has been a useful diversion to some academic stuff I'm dealing with this
weekend (:
All the best
Mark S
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