The pressure sensitivity for a classic design can easily be eliminated. I'm pretty sure that the old Varian R20 cell was mostly immune. Either using the R20 design or stiffer convex ends in a modern design would work. Also a sealed optical unit has been used to get rid of the pressure problem. Any of these methods would be trivial in a new design. The Rb/glass absorption is mostly in the lamp, when using the proper glasses in the cell and using similar lasers to what the cold standard uses eliminates that.
Newer RF architecture would also help, NLDL multiplier, low noise synthesis, etc. My main gripe was that either they were either intentionally reducing the performance of their masers or using a setup that did not do justice to them. Cheers, Corby _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
