[Sneap] Sneap Digest, Vol 39, Issue 5

[cslee]

Dear Victor Rotberg:

I do apprciate your reply.   First question I would like to ask is that what 
solution do you use?  Because I always use the solution   Cathode
 Coating T-33C-118 (Ba-Sr-Ca) CO3 56-31-13%.,manufactured  by Transene 
Company, INC, Danvers MA 01923.  Before this soultion  was exactly described 
as manual mentioned:
[" wash" the filament back and forth in the coating to insure it flows 
through the gauze mesh.  Approximately 20 seconds is sufficient.  ] .

But now it was very hard to coat the solution on the mesh cathode.  And most 
of all it can't make the ion siource have a stable discharge. For the time 
being the main reason I can say is that the voltage differencce across the 
anode and the intermediate electrode is only 2 volt, much less than the 
required 34 volts.  Which means that there isn't enough thermal electrons 
produced.  We put the whole bottle on a vibrating machine and shake it at 
least 4~5 hours. It is a very strong vibrating any way.  Is that right?


I do appreciate that now I know some one use the same machine as I do, at 
least that make me not feel so isolated.

Best regards

CS Lee