Observed on 3 R XSR, on 10 5065A decommissioned together after 10...20 years
of service (blue ones with Patek clock, green, black and green...with 10811A
and digital clock...) --they were replaced by a GPS based synchronisation
network--. plus some 5065A got here and there. The lamp assy I
Corby, I have a question to add regarding the HP units: is the tip
temperature hot
enough to melt Rb in addition to providing vapor? If so, doesn't the
orientation of
the physics package in earth's gravity have to be about correct in order to
keep
the excess Rb in the tip?
Thanks,
Dana
On
JF, Reference your statement:
"Sorry, but I don't agree with your first statement about the 5065A :
after long use, the rubidium plates on the inner envelope of the lamp
(like silver on a mirror) and years after years the Rb light and photo I
decreases."
After working on the 5065A for over 40
Sorry, but I don't agree with your first statement about the 5065A : after
long use, the rubidium plates on the inner enveloppe of the lamp (like silver
on a mirror) and years after years the Rb light and photo I decreases. Finaly,
adjustement becomes imossible. The solution (as described a
There are two separate Rubidium migration problems.
The first is Lamp flooding which occurs when too much Rubidium enters the
main bulb and plates onto the bulb envelope. (usually after long storage
or storage at high temperatures) This mainly in the small telecomm
Rubidiums due to design flaws.
