Author Topic: wishlist  (Read 411 times)

Ben Buse

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wishlist
« on: September 10, 2018, 05:37:46 am »
Would it be possible to export standard compositions from standard database, into calczaf for calculating ZAF and K-values using specified composition.

Thanks

Ben

John Donovan

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Re: wishlist
« Reply #1 on: September 10, 2018, 12:13:31 pm »
Would it be possible to export standard compositions from standard database, into calczaf for calculating ZAF and K-values using specified composition.

Hi Ben,
Almost everything is possible!   :)

Since the Standard app already outputs the matrix corrections and k-ratios as seen here:

St   19 HfSiO4 (Hafnon)
TakeOff = 40.0  KiloVolt = 15.0  Density =  6.900  Type = silicate

Synthetic material
Flux grown by John Hanchar
Elemental Composition

Average Total Oxygen:         .000     Average Total Weight%:  100.000
Average Calculated Oxygen:    .000     Average Atomic Number:   50.841
Average Excess Oxygen:        .000     Average Atomic Weight:   45.096

ELEM:       Hf      Si       O
XRAY:      la      ka      ka
ELWT:   65.967  10.380  23.653
KFAC:    .5410   .0533   .0838
ZCOR:   1.2194  1.9481  2.8232
AT% :   16.667  16.667  66.667

Can you explain exactly what you have in mind for running this in CalcZAF?  What is it you are after? 

If I understand the purpose better I can make it right the first time.
john
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Ben Buse

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Re: wishlist
« Reply #2 on: September 11, 2018, 02:00:48 am »
Hi John,

Thanks, I didn't notice that was in standard app.

That will do my current purpose kvalue = concentration * 1/ZCOR. (I trying to see if my measurements match predicted kvalue.

Previously I've also used the absorption parameter when converting from MAN curve to actual background intensity when calculating errors - for unmeasured materials.

Thanks

Ben

John Donovan

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Re: wishlist
« Reply #3 on: September 11, 2018, 09:18:22 am »
Hi John,

Thanks, I didn't notice that was in standard app.

That will do my current purpose kvalue = concentration * 1/ZCOR. (I trying to see if my measurements match predicted kvalue.

Previously I've also used the absorption parameter when converting from MAN curve to actual background intensity when calculating errors - for unmeasured materials.

Thanks

Ben

Hi Ben,
No worries, just let me know if you need something else done.

Remember to be sure to change the keV value in the Analytical | Operating Condition menu dialog if you are not at 15 keV!
john
John J. Donovan, Pres. 
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John Donovan

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Re: wishlist
« Reply #4 on: September 11, 2018, 09:45:12 pm »
That will do my current purpose kvalue = concentration * 1/ZCOR. (I trying to see if my measurements match predicted kvalue.

Hi Ben,
As you know, the "predicted" values are *just* a model. The values shown will depend on the matrix correction method and MACs selected in the software. Our measurements are (in principle), the true k-ratios.  Assuming of course that we're making good measurements. Which is not always easy to do!

Some day I will attempt to better understand the physics of measuring N Ka in a Ti matrix! I've got a bottle of the TiN material prepared by Bastin many years ago sitting on my desk.  Wish me luck.   :)
john
John J. Donovan, Pres. 
(541) 343-3400

"Not Absolutely Certain, Yet Reliable"