[Amps] Ion Pump

donroden at hiwaay.net donroden at hiwaay.net
Mon Jul 21 08:26:48 EDT 2014

>>> From: "Roger (K8RI)"
  We used a roughing pump to get to 10^-1 Torr, then
>>> a diffusion pump to make 10^-6, (-7.with a liquid N2 cold trap) At that
>>> point we'd start the ion pump.

So, did William Shakespeare predict the vacuum tube when he wrote
"Much Ado About Nothing" in  1598 ?


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