Dear All,
I am having difficulties with energy calibration of my Braun linear PSD, namely I would have to set the voltage near to 4000 instead of the usual value of 3600, to have a centered energy peak. Also, the corundum peaks I usually collect as checks show an intensity say 30% of the normal, but their angular position are correct. I had a look at the Ar-Ch4 pressure, but it is still near 80 bars. I suspect, as the gas was changed say a year ago, that a decay, or a change, may be happened in the gas mixture properties. Has somebody experienced something like that?
best regards Natale Perchiazzi
Chiacchiera con i tuoi amici in tempo reale!
http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com
