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virtual wds

Started by Ben Buse, August 28, 2025, 08:17:35 AM

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Ben Buse

Stephen Reed and Andy Buckley Virtual WDS https://link.springer.com/chapter/10.1007/978-3-7091-6555-3_41 is no longer distributed by Cambridge Enterprise,

It would be good if it was made freely available, is anyone involved in making this happen?

John Donovan

#1
Quote from: Ben Buse on August 28, 2025, 08:17:35 AMStephen Reed and Andy Buckley Virtual WDS https://link.springer.com/chapter/10.1007/978-3-7091-6555-3_41 is no longer distributed by Cambridge Enterprise,

It would be good if it was made freely available, is anyone involved in making this happen?

Just in case it helps whatever you are after, if you have CalcZAF installed, there is a PENEPMA folder with the pure element intensities for 5 to 30 keV beam energies:



It is what we use in PFE to model WDS spectra.
John J. Donovan, Pres. 
(541) 343-3400

"Not Absolutely Certain, Yet Reliable"

Ben Buse

#2
Thanks John, no I just think virtualWDS has a potential as a nice easy learning tool / educational aid for students, if it was freely available

Although it comes with a caveat, the trouble with it scaling pure metals, just like with penepma simulations is don't account for satalite lines which can change peak shape or form additional peaks. And I guess can be done through PFE demonstration mode - you just have to wait for the wavescan to acquire which can take a time for full wavescan. And importantly remember how to do it, of which this is useful https://smf.probesoftware.com/index.php?msg=6612. Does PFE like virtualWDS give a different wavescan for different PHA settings? I tried a 9.5 window and 5.5 window on Si and 2nd Si Ka looked the same.

John Donovan

Quote from: Ben Buse on September 02, 2025, 02:05:16 AMThanks John, no I just think virtualWDS has a potential as a nice easy learning tool / educational aid for students, if it was freely available

Although it comes with a caveat, the trouble with it scaling pure metals, just like with penepma simulations is don't account for satalite lines which can change peak shape or form additional peaks. And I guess can be done through PFE demonstration mode - you just have to wait for the wavescan to acquire which can take a time for full wavescan. And importantly remember how to do it, of which this is useful https://smf.probesoftware.com/index.php?msg=6612. Does PFE like virtualWDS give a different wavescan for different PHA settings? I tried a 9.5 window and 5.5 window on Si and 2nd Si Ka looked the same.

Yeah, PFE just takes the PENEPMA generated spectra and adds some instrumental artifacts such has background, detector absorption edges, etc., but like PENEPMA, PFE does not add any chemistry effects.

And while the PHA settings in simulation mode do affect the acquired PHA display, they don't affect the generated spectra.  It's just a crude teaching tool.

Sounds like a cool project for you to write... physics and chemistry in one package!
John J. Donovan, Pres. 
(541) 343-3400

"Not Absolutely Certain, Yet Reliable"