Problem metalica SNF 2012-08-24 12:58:05: Pressure drop after Ar on

wtzhao at wtzhao at
Fri Jan 11 13:08:40 PST 2013

worked fine under 9e10-7 until turn on the Ar key, then the pressure dorped significantly to 10-2. Have to close ion guage and everything.Re-pumped again, but still failed at the same step.  

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