Hi all,
This e-mail is primarily directed to argon labs that use the
Mass_Spec software, but I'd be happy to gather information from
others.
A few of us have been putting some thought into time-zero for
intercept determinations of peak intensity versus time evolutions. I
know there is some variation in thought on this determination. For
for our ARGUS VI instruments we set time zero nerarly equal to when
the inlet valve opens and we begin data collection at near the time
when the maximum intensity is reached and begins to fall (for large
beams).
Mass_Spec users have a spectrometer set up file where equilibration
time is set. A restricted survey shows a factor of 4 variation in
this equilibration time value (15 seconds to 60 seconds).
If you could take a few minutes and let me know your values for two
parameters I'd appreciate your help.
Please provide:
1. Equilibration time and
2. Time from gas inet until max intensity is reached.
My goal is to determine the range of values out there and/or the
methods of determining time zero in your lab as compared to others.
Thanks and I hope all is well with you.
Matt
--
Matt Heizler
NM Bureau of Geology and Mineral Resources
NM Tech
801 Leroy Place
Socorro, NM 87801
Office 575-835-5244
Argon Lab 575-835-5271
Main Office 575-835-5420
FAX 575-835-6333
http://geoinfo.nmt.edu/staff/mheizler/home.html
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