[time-nuts] HP 5071A Electron Multiplier of Cesium Beam Tube

Magnus Danielson magnus at rubidium.dyndns.org
Tue Sep 8 21:59:58 UTC 2009

J. Forster wrote:
> Is it REALLY a mass spec? After all, it only detects a single ion, like a
> He leak detector. The He units can be tuned for He3 or He4

Well... you need to ionize and then hit the photomultiplier. No fancy 
bending magnetic field really needed...

If I end up with a used Cs tube I'll open it up and check. Would be fun. 
Need some cesium nutrition... :)


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