Recent Posts

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PictureSnapApp (NEW!) / Re: PictureSnapApp version 1.5.4
« Last post by John Donovan on Today at 10:29:05 am »
And here's another example showing the current position and current FOV on the PictureSnapApp base map:



Try it out in demo (and text input mode) mode:

http://probesoftware.com/PictureSnapApp.html
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PictureSnapApp (NEW!) / Re: PictureSnapApp version 1.5.4
« Last post by John Donovan on Today at 10:16:40 am »
So here are some PictureSnapApp examples of displaying BSE images from PFE displayed on a sample thin section scanned on a Nikon slide scanner with crossed polars:



These "thumbnail" images could be any image source (CL, SE). One can also simply check a box and only the outlines of the image will be visible:

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PictureSnapApp (NEW!) / Re: Image Locator Feature
« Last post by John Donovan on May 25, 2018, 10:33:59 am »
I realized last night that I had forgotten to save the current screen DPI for modified sub images in their corresponding ACQ files, so that is now fixed.   This only matters if one moves a set of images from one computer to another and they have different DPI values for the screens.

If you downloaded or updated PictuyreSnapApp in the last few days, please update again.  Sorry and thanks.
4
DTSA II / Re: phi rho z curves
« Last post by jrminter on May 25, 2018, 10:03:01 am »
Ben,

Just took a quick look at the source. The detector is not used in the Phi-Rho-Z computation but is used in the Spectrum properties function to pass the energy to the algorithm initialization. See lines 677 and 734 in the two functions (one reports in Z nor rho*Z). I suspect that most algorithms use a similar method to pass parameters and need more than the energy from the SpectrumProperties parameter. This one did not...

Best regards,
John
5
DTSA II / monte carlo depth ranges
« Last post by Ben Buse on May 25, 2018, 07:16:34 am »
Hi,

I have a question about the ranges in the report - shown below -



Can anyone confirm that these are calculated from the monte carlo simulation. I'm a bit confused as they are available for 'bulk simulation' but not 'inclusion in bulk' simulation, so I was wondering are they empirical calculations?

Thanks

Ben
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EPMA Standard Materials / Re: SrCs4(PO3)6 synthesis
« Last post by Brian Joy on May 25, 2018, 06:38:34 am »
I haven't had a chance to look at the crystals under the microscope yet, but the habit appears to be consistent with the crystal system (hexagonal).

So apparently I posted too quickly.  I had a sneaking suspicion that the symmetry looked too low, and I just verified this under the microscope.  The crystals appear to be monoclinic and may be Sr2Cs(PO3)5.  This could also explain the relatively low yield.  I'll probably start a second attempt later today.
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DTSA II / Re: phi rho z curves
« Last post by Ben Buse on May 25, 2018, 06:32:40 am »
Hi John,

I've just come across your script for plotting phi-rho-z curves from PAP or XPP in DTSAII. It's very nice. I just wanted to ask you why does it have a detector - is this solely to define take-off angle?- for DTSAII is not running monte carlo.?

Script
Code: [Select]
import dtsa2.jmGen as jmg
    e0  =  7
    nSteps = 500
    rho = 0.5*(7.874 + 8.908)
    feni = material("FeNi", density=rho)
    det = findDetector("FEI FIB620 EDAX-RTEM")
    trs=[epq.XRayTransition(epq.Element.Fe,    epq.XRayTransition.LA1), epq.XRayTransition(epq.Element.Ni,    epq.XRayTransition.LA1)]
    a = jmg.compPhiRhoZ(feni, det, e0, nSteps, xrts=trs,    alg=epq.PAP1991(), base="pap-prz", outdir="c:/temp/")

found here
https://github.com/jrminter/dtsa2Scripts/blob/master/jmGen/jmGen.py
The output is great for gnuplot. Its good for those non-windows computers that don't run calczaf.

Thanks

Ben
8
EPMA Standard Materials / SrCs4(PO3)6 synthesis
« Last post by Brian Joy on May 24, 2018, 07:37:48 pm »
With a ton of help from fellow forum member crystalgrower, I've just completed my first SrCs4(PO3)6 synthesis run.  I haven't had a chance to look at the crystals under the microscope yet, but the habit appears to be consistent with the crystal system (hexagonal).  The run produced several thousand small, acicular crystals that I'll intend to use as seed crystals in subsequent runs.  In the photo below, the width of the field of view is about 35 mm.  The largest crystals are perhaps 4 mm in length but very narrow.  I'll probably start the next run to produce larger crystals late tomorrow.

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PictureSnapApp (NEW!) / Re: Image Locator Feature
« Last post by John Donovan on May 23, 2018, 03:12:55 pm »
I should also point out that when one moves these PSA images to another instrument, the stage units and orientations are automatically converted (the files are appropriately renamed), and after one recalibrates the main image, all annotations and (sub) images are automatically calibrated to the new instrument stage.

The idea being that by using PictureSnapApp one can easily move one's folder of images to another instrument, re-calibrate the main image and be navigating your sample on the new instrument in minutes.
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CalcZAF and Standard / Re: Nasty Boundary Fluorescence Analytical Situations
« Last post by Probeman on May 23, 2018, 03:09:00 pm »
no idea who reviewed it.....

Ha!

But we certainly appreciated the reviewer's very helpful suggestions nonetheless...     :)
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