So it fits a function to the whole wavescan range is that right?

So Parabolic and Gaussian only work if wavescan range is restricted to the width of the peak, whereas Brent Maxima always works, as its using a parabolic interpolation to find the maxima -

Hi Ben,
Yes I noticed that also.

We will try to modify the fitting code to only utilize the current "zoom" range.  Give us a few days.
john

Hi John,

Thanks, you learn something new everyday.

So it fits a function to the whole wavescan range is that right?

So Parabolic and Gaussian only work if wavescan range is restricted to the width of the peak, whereas Brent Maxima always works, as its using a parabolic interpolation to find the maxima -

Thanks

Ben

Hi Ben,
Well, you can either uncheck the "Relative Position" checkbox in the Plot! window and use the mouse cursor to display in spectrometer units, as shown here:



Or you can use one of the peak fitting methods in the Model Backgrounds dialog as seen here:

History: "The past is never dead. It's not even past."--Hemingway

I am the archivist of the Microanalysis Society (formerly Microbeam Analysis Society and back in the ancient times, the Electron Probe Analysis Society of America) and recently in sorting through old files left by my predecessor Everett Glover (1917-2017), I came across a page cut out of “ARL Probe News, a quarterly newsletter published by Applied Research Laboratories’ Research Instruments Product Group, Stephen O. Friend, Editor”. By any chance, does anyone happen to have any copies of this newsletter, which they would be willing to donate to the MAS Archives? (We will be installing our archives at the Science History Institute in Philadelphia in 2021.) Or if you have any other historical materials from the 1960s onward that document our field (newsletters, correspondence, white papers, etc).

Thanks.

John
johnf@geology.wisc.edu

I was told (and had specified for my lab) that keeping humidity between 30% and 60% as the target. Of course the architects of our building nodded and then did nothing (because it is expensive or they just didn't care),. So now my lab has no humidity control and I often have a humidity of 10% in the dry Midwest winter and feel I need to drink gallons of water besides getting shocked often. On the upside, the machine reaches a good vacuum in no time after sample change

I had bought the largest stand-alone humidifier I could find but it would only raise the humidity by 5% (large lab though) and made a giant ruckus and needed to be refilled constantly so I eventually gave up on it. To get proper humidity control, I was told I need to tap into the steam system which was too expensive. A different lab in the building did that though and now they have controlled humidity but the controllers in their hallway generate so much heat that the heat load is causing other problems for them.

I have dissipative flooring though, so it could be worse. I also got these 5$ anti-static key chain eliminators that you can find on Amazon/ebay.

Would be interested to learn if there are other solutions. Obviously it depends strongly on the humidity range in the region how difficult it is to maintain within a range.