Author Topic: Probe Software Forum Newsletters  (Read 4931 times)

John Donovan

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Re: Probe Software Forum Newsletters, Winter 2017
« Reply #15 on: February 02, 2017, 01:54:15 pm »
Hi all,
The Probe Software user forum has been very busy this winter, with over 42 new topics and over 300 new posts since Nov 1. The forum totals currently stand at 5411 Posts in 801 Topics by 350 Members... here are some recent highlights.

Brian Joy and Anette von der Handt had a discussion regarding changes in Bragg crystal reflectivity and peak shape over time:

http://probesoftware.com/smf/index.php?topic=854.0

Probeman was at the San Francisco AGU (American Geophysical Union) in December to present his new trace element methods, but was disturbed to see some talks in which some trace element "diffusion" profiles appeared to be merely secondary fluorescence artifacts from boundary phases... don't geologists read the Journal of Applied Physics?  Apparently not!    :)

http://probesoftware.com/smf/index.php?topic=58.msg5435#msg5435

Anette von der Handt posted some useful on-line resources for EPMA, WDS, EDS and SEM:

http://probesoftware.com/smf/index.php?topic=856.0
http://probesoftware.com/smf/index.php?topic=855.0

Probeman posted a nice summary of accuracy and precision of trace element measurements using the MAN background correction method (along with the blank correction method):

http://probesoftware.com/smf/index.php?topic=307.msg5426#msg5426

Ben Buse and John Donovan discuss how to deal with negative intensities when performing quantification of x-ray maps- we don't want to just cut things off at zero!  Do you know why?

http://probesoftware.com/smf/index.php?topic=861.0

John Donovan has improved the WDS (and EDS) simulation modes in Probe for EPMA to more accurately simulate EPMA for teaching and demonstration. Every student in your EPMA class can have PFE (and CalcZAF) on their own laptops so they can follow right along with their mouse pointer.  Your students will already understand how to run the microprobe before they've even sat down with the instrument!

http://probesoftware.com/smf/index.php?topic=837.msg5480#msg5480

Probeman posted a discussion on halogens replacing stoichiometric oxygen in various minerals and how that should be corrected for in PFE:

http://probesoftware.com/smf/index.php?topic=42.msg5473#msg5473

Ben Buse posted a nice summary of using PCC (Probe Column Condition) files in PFE for handling characterization of inclusions at multiple beam energies:

http://probesoftware.com/smf/index.php?topic=5.msg5504#msg5504

John Donovan posted an update on where we are at with regard to synchronized EDS and WDS x-ray mapping on Cameca and JEOL EPMA instruments for integration with Thermo, Bruker and JEOL EDS systems:

http://probesoftware.com/smf/index.php?topic=865.msg5500#msg5500

Karsten Goemann and John Donovan implemented a new feature in PFE that allows the user to select a different default "sample basis" for updating multiple selected samples for both the Elements/Cations and Standard Assignments dialogs:

http://probesoftware.com/smf/index.php?topic=42.msg5511#msg5511

Walter asked several questions about utilizing different applications (Casino, pyPenelope, CalcZAF, DTSA-II, etc.) for quantifying EDS intensities from an SEM:

http://probesoftware.com/smf/index.php?topic=870.0

Julien Allaz asks about diode vs. triode ion pumps:

http://probesoftware.com/smf/index.php?topic=869.0

John Donovan discusses how Probe Software handles errors returned by the instrument, compared to JEOL and Cameca:

http://probesoftware.com/smf/index.php?topic=868.msg5533#msg5533

Emma asks about mounting magnetic powders for imaging in an SEM:

http://probesoftware.com/smf/index.php?topic=872.msg5544#msg5544

Owen Neill posts an announcement of a standard materials symposium at M&M this summer in St. Louis:

http://probesoftware.com/smf/index.php?topic=99.msg5531#msg5531
John J. Donovan, Pres. 
(541) 343-3400

"Not Absolutely Certain, Yet Reliable"

John Donovan

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  • Posts: 1908
  • Other duties as assigned...
    • Probe Software
Re: Probe Software Forum Newsletters, Spring 2017
« Reply #16 on: June 18, 2017, 10:44:57 am »
Welcome to your Probe Software Forum Spring 2017 Newsletter!  A couple of stats to begin with: we now have 373 members, 5641 posts in 811 topics. Some of the more notable new topics/posts this spring:

John Donovan presented a new method for correction of x-ray mapping of beam sensitive samples (e.g., alkali glasses), using fast replicate x-ray maps to quantitatively extrapolate ion migration effects using the time dependent intensity correction (also known as a volatile correction), but now on a pixel by pixel basis as seen here:

http://probesoftware.com/smf/index.php?topic=912.0

Amazingly, although these significant artifacts (see the grid patterns in the alkali element maps) are created (even when mapping at low beam currents and short dwell times), this new TDI scanning correction seems to be able to accurately correct for such ion migration effects quantitatively. Perhaps even more surprising is that the same method appears to quantitatively correct for carbon contamination effects as shown here:

http://probesoftware.com/smf/index.php?topic=933.0

John Donovan has also significantly improved the simulation mode of Probe for EPMA to better enable the teaching of EPMA in the classroom as discussed here:

http://probesoftware.com/smf/index.php?topic=837.msg5472#msg5472

The latest versions of Probe for EPMA now allows instructors and students to simulate both EDS and WDS acquisition and quant processing in the classroom without wasting time on the instrument.  Every students gets a free copy of the software which they can also use to re-process actual probe data for their own projects.

Paul Carpenter, Ben Buse and Probeman discuss the history of the Cal Tech "Shaw" dataset here:

http://probesoftware.com/smf/index.php?topic=890.msg5922#msg5922

Andrew Mott and Probeman discuss problems with carbon coating here:

http://probesoftware.com/smf/index.php?topic=921.0

After seeing an interesting poster by Ery Hughs and a question by Ed Vicenzi on water by difference at the EMAS meeting, Probeman discusses some subtleties with the water by difference calculation here:

http://probesoftware.com/smf/index.php?topic=922.0

John Donovan started a new topic on the "History of EPMA" where you all can share your stories from the "early days":

http://probesoftware.com/smf/index.php?topic=924.0

Probeman started a topic on "Applications for EPMA" to help document the many apps available for various EPMA/SEM calculations:

http://probesoftware.com/smf/index.php?topic=927.0

Please feel free to add your own knowledge of EPMA applications to the topic!

A new board for discussing the SAMx STRATAGem software has been started:

http://probesoftware.com/smf/index.php?board=33.0

Probeman wrote a long post on strategies for accurate trace element characterization. Maybe he's right or maybe he's wrong- feel free to chime in...

http://probesoftware.com/smf/index.php?topic=928.0

Cesc Salvat shared a new Java application to assist in the creation of geometry files for Penepma Monte Carlo calculations:

http://probesoftware.com/smf/index.php?topic=202.msg5961#msg5961

Probeman shows results from different materials regarding the infamous "holes" in the continuum at the Ti Ka peak position on PET crystals:

http://probesoftware.com/smf/index.php?topic=29.msg5974#msg5974

Anette von der Handt is designing a new lab for her new EPMA instrument. Here are some items of interest for those that might be in a similar situation:

http://probesoftware.com/smf/index.php?topic=879.msg5962#msg5962

Regards,
The Probe Software Users Forum Team.

http://probesoftware.com:80/smf/index.php
John J. Donovan, Pres. 
(541) 343-3400

"Not Absolutely Certain, Yet Reliable"