Hi Matt ...
Here at OSU we use ArArEXPERIMENTS and we set time zero 1 second after the
inlet valve is opened. We do a peak center routine at 17 seconds and start
data acquisition after 42 seconds. This latter time could be pushed back to
30-35 seconds where we typically observe the max intensity for large beams
...
Cheers, Anthony.
Anthony Koppers | Professor of Marine Geology and Geophysics
College of Earth, Ocean and Atmospheric Sciences | Oregon State University
104 CEOAS Admin Bldg | Corvallis, OR 97331-5503 | 541.737-5425
-----Original Message-----
From: Noble Gas Geochemistry Network
[mailto:[log in to unmask]] On Behalf Of Roberto Siqueira
Sent: Monday, June 09, 2014 04:39
To: [log in to unmask]
Subject: Re: survey of Mass_Spec Users
Hi Matt:
Here at the University of Sao Paulo (Brazil) a homemade Python script
controls the Argus VI Qtegra software through a modified version of New
Mexico Tech's RemoteControlServer.
Our timings are: open Inlet -> wait 30s -> close Inlet & set time to
zero -> wait 5s -> start measurement.
Roberto.
Em 05-06-2014 15:18, matt heizler escreveu:
> 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
>
>
|
