IIRC, there's a description in the 5065A manual about how to restore the lamp if this happens, but I think the mechanism tends to occur during long periods of storage, not during operation.
The small telco Rb's certainly have the flooding problem and there the restoral methods are a bit more ad hoc. John ---- On 10/24/19 5:27 PM, Charles Steinmetz wrote: > John wrote: > >> The 5065A is a Rubidium standard and unlike Cesium units it doesn't >> have a "wear out" mechanism. With a little TLC they can run >> indefinitely. > > We have heard a lot about vaporized Rb plating (condensing) out on the > cooler spots of the envelope, and the need to refurbish tubes by heating > the envelope to encourage the Rb to condense back to its original > position to keep the physics package running. > > All of the discussion I recall pertained to the small-cell telecom Rb > units, but I may have missed posts about refurbishing 5065A Rb cells. Is > the 5065A free from this mode of deterioration, and/or is there a > similar fix for them? (I could easily imagine that it takes a much > longer time for a large Rb cell to show degradation from this cause.) > > Best regards, > > Charles > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
