NetNotes
I agree with Reinhard. Te specifics depend on the type of FEG
that you have. In general FEG microscopes require a high vacuum. Te SEM and FIB in my lab had Schottky Field Emission guns. Like all FEGs, they required very high vacuums to work. Te tip was always on. If your microscope is like this, you may use the microscope for only a few hours per month, but the tip is running all the time. A complete shutdown of our FEG SEM and FIB for more than a day or so required a bake-out procedure to bring it back up. Tis could take a day or two to get the microscope back to working order. Like Reinhard’s microscope, our microscopes had a “standby” mode where the gun was maintained under vacuum with the ion getters on and could be restarted easily and the tip turned back on in a few hours. I never tried using this mode for longer than a week or two. We typically needed to replace the tip every couple of years, but our microscopes were used daily. I recommend you contact the manufacturer and ask for their best practices for your microscope and use case. John Minter
jrminter@gmail.com Mon Oct 29
EDS:
new video tutorials for software Over the years, many people have asked about video tutorials for
NIST DTSA-II. NIST DTSA-II provides soſtware for quantification and simulation of electron-generated energy dispersive x-ray spectra. It is used all over the world in both the laboratory and class-room environments. Recently, in response to the requests, we’ve created half-a-dozen videos and published them on YouTube. Te YouTube channel is here: https://
www.youtube.com/channel/UCt4nKyhfFQ8xecHyuTnCvIA or
search
for DTSA-II on YouTube. Currently, the videos cover an introduction to DTSA-II, quantification, simulation and a couple of other topics. Subscribe to the channel, and you will be notified when new videos are published. Hopefully, you find the videos helpful. Nicholas Ritchie
nicholas.ritchie@nist.gov Fri Oct 5
Quantitative Microanalysis Topical Conference QMA 2019
June 24–27, 2019 University of Minnesota, Minneapolis
Early Career Scholar financial support available
Improve your microanalysis skills, meet new people, and learn from the experts
SCIENTIFIC PROGRAM
Quantitative WDS and EDS microanalysis · FE-EPMA and SEM · Microanalysis standards · Compositional mapping · Quality control · Sample preparation · Hardware developments · Microanalysis applications · CL and Soſt X-ray spectroscopy · Early Career Scholar presentations · Sponsor technical presentations
GROUP SESSIONS
Tutorials · User group meetings · Problem solving · Microanalysis soſtware tools and demonstrations
SCIENTIFIC AND SOCIAL EVENTS
Opening reception · Group meals and banquet · Poster session · Networking opportunities
www.microbeamanalysis.org
QUANTITATIVE MICROANALYSIS
UNIVERSITY OF MINNESOTA MINNEAPOLIS
44
www.microscopy-today.com • 2019 January
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