At the 38th Annual Symposium on Frequency Control (1984), a presentation was given on the “Lifetime and Reliability of Rubidium Discharge Lamps for Use in Atomic Frequency Standards” by Aerospace Corp., Efraton-Ball, and EG&G. https://ieeexplore.ieee.org/document/1537723/
The spattering of Rubidium on the lamp’s inside glass is discussed. greg, w9gb Sent from iPad Air > On Jul 7, 2018, at 5:30 PM, Gregory Beat <[email protected]> wrote: > > In 2008, G Molenkamp, VK3UM noted that of the 20 Efratom model FRS-C units he > restored, component failure due to long heat exposure caused most of the > failures. > http://www.vk3um.com/Rubidium%20rejuvination.pdf > He notes that some lamps had Rb splattered over the inside wall of the glass. > > In these cases, the Rb material was not consolidated in the “pinch of the > glass lamp”. > Using the “heat gun process” he was able to rejuvenate those Rb lamps. > > w9gb > == > >Time-Nuts Group, > >For someone interested in working on the Rb package which I believe is the > >FRK series. Worked great in my lab for years and recently started being real > >slow to lock during power cycles and now won't lock at all. Not sure what > >the fair asking price would be in this condition. Maybe someone has > >repair/refurb experience with the Efratom FRK. > >Contact me if interested. > >Don > _______________________________________________ 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.
