Comment xactix SNF 2008-02-04 14:14:55: source chamber leak?

yeh at snf.stanford.edu yeh at snf.stanford.edu
Mon Feb 4 14:14:55 PST 2008


expansion chamber was at 0.3torr.  when i opened the source chamber valve, the pressure went up to >46torr.  xef2 crystals sublimates to 4torr at room temp.  leak into source chamber likely.




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