Author Topic: PENEPMA Alpha Factors Binary Wishlist  (Read 2909 times)

Dan Ruscitto

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PENEPMA Alpha Factors Binary Wishlist
« on: August 15, 2013, 08:00:45 am »
Here is my wish list of PENEPMA binary alpha factors that need to be calculated. Presumably this would greatly improve accuracy for low kV work, since the ZAF corrections do not work very well in my experience. Is there a way that I can calculate these easily myself? Do I just need to make .par files? Thanks for any help/advice.

Ni-Ta, Ni-Hf, Ni-Re, Ni-W, Ni-Zr
Al-Hf, Al-Re, Al-W
Ta-Hf, Ta-Re, Ta-W, Ta-Co, Ta-Cr, Ta-Mo, Ta-Zr
Hf-Re, Hf-W, Hf-Co, Hf-Cr, Hf-Mo, Hf-Zr
Re-W, Re-Co, Re-Cr, Re-Mo, Re-Zr
W-Co, W-Cr, W-Mo, W-Zr
Zr-Co, Zr-Cr, Zr-Mo

-Dan
« Last Edit: October 07, 2013, 11:27:13 am by John Donovan »

John Donovan

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Re: PENEPMA Alpha Factors Binary Wishlist
« Reply #1 on: August 15, 2013, 11:30:09 am »
Hi Dan,
You could certainly run these yourself in Standard.exe, but since I'm already all set up to do it, I'll just fire them off myself and let you know as soon as I have them integrated into the matrix.mdb file so you can use them in your low overvoltage analyses in PFE.
john
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Dan Ruscitto

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Re: PENEPMA Alpha Factors Binary Wishlist
« Reply #2 on: August 15, 2013, 11:36:26 am »
Thanks John! That would be a tremendous help. Does the matrix.mdb file get updated during a general PFE update?
-Dan

John Donovan

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Re: PENEPMA Alpha Factors Binary Wishlist
« Reply #3 on: August 15, 2013, 01:23:06 pm »
I'm updating the matrix.mdb file about every two months now, but as soon as these new binaries are ready I will update the matrix.mdb file and let you know.
John J. Donovan, Pres. 
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John Donovan

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Re: PENEPMA Alpha Factors Binary Wishlist
« Reply #4 on: August 21, 2013, 10:39:09 pm »
Download this file to see which binaries have been calculated. If a binary that you are interested in has not been calculated please let me know.
John J. Donovan, Pres. 
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John Donovan

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Re: PENEPMA Alpha Factors Binary Wishlist
« Reply #5 on: April 20, 2015, 10:36:16 pm »
The number of calculated Penepma binaries for alpha factor matrix corrections has been proceeding well. Almost half the periodic table has been calculated at normal precision. Work is beginning on double precision calculations which will greatly improve accuracy at low overvoltage situations.

Here is an example of the fast Penepma derived matrix corrections on a measurement of NIST Hastalloy 2402, which while admittedly is somewhat heterogeneous, yields impressive accuracy in a difficult system at 15 keV:

St  651 Set   2 NIST SRM C2402 (Hastelloy C), Results in Elemental Weight Percents

SPEC:       Co      Si      Mn       V      Cu
TYPE:     SPEC    SPEC    SPEC    SPEC    SPEC

AVER:    1.500    .850    .640    .220    .190
SDEV:     .000    .000    .000    .000    .000
 
ELEM:       Fe      Ni      Cr      Mo       W
BGDS:      LIN     LIN     EXP     LIN     LIN
TIME:   100.00  100.00  100.00  100.00  100.00
BEAM:    29.84   29.84   29.84   29.84   29.84

ELEM:       Fe      Ni      Cr      Mo       W   SUM 
   207   7.920  52.742  16.357  14.968   4.271  99.658
   208   7.665  51.589  16.440  16.132   4.096  99.321
   209   7.805  52.359  16.415  15.261   4.208  99.448
   210   6.692  46.295  16.082  22.657   4.677  99.803
   211   7.604  51.635  16.470  16.253   4.075  99.436

AVER:    7.537  50.924  16.353  17.054   4.265  99.533
SDEV:     .488   2.633    .157   3.180    .244    .194
SERR:     .218   1.178    .070   1.422    .109
%RSD:     6.48    5.17     .96   18.65    5.72

PUBL:    7.300  51.500  16.150  17.100   4.290  99.740
%VAR:     3.25   -1.12    1.26    -.27    -.57
DIFF:     .237   -.576    .203   -.046   -.025
STDS:      526     528     524     542     574

STBE:   1.0000  1.0000  1.0002  1.0016  1.0007
STCT:   6346.7 20768.3 15241.3  8726.4  2235.2

UNBE:    .9459   .9846   .9500  1.2690  1.5858
UNCT:    505.7 10739.8  2627.0  1185.5    60.4
UNBG:     19.5   118.8    71.3    14.9     4.7
KRAW:    .0797   .5171   .1724   .1359   .0270
PKBG:    26.98   91.45   37.85   80.39   13.83


Ok, so that could be luck!  But here's another measurement at 20 keV:

St  651 Set   3 NIST SRM C2402 (Hastelloy C), Results in Elemental Weight Percents

SPEC:       Co      Si      Mn       V      Cu
TYPE:     SPEC    SPEC    SPEC    SPEC    SPEC

AVER:    1.500    .850    .640    .220    .190
SDEV:     .000    .000    .000    .000    .000
 
ELEM:       Fe      Ni      Cr      Mo       W
BGDS:      LIN     LIN     EXP     LIN     LIN
TIME:   100.00  100.00  100.00  100.00  100.00
BEAM:    29.90   29.90   29.90   29.90   29.90

ELEM:       Fe      Ni      Cr      Mo       W   SUM 
   212   7.761  52.059  16.630  16.097   4.175 100.121
   213   7.574  51.048  16.596  17.276   4.102  99.996
   214   7.342  49.414  16.456  18.757   4.209  99.579
   215   6.950  47.710  16.403  20.405   4.268  99.137
   216   7.256  49.131  16.603  18.563   4.134  99.086

AVER:    7.377  49.873  16.538  18.220   4.177  99.584
SDEV:     .310   1.703    .101   1.626    .065    .476
SERR:     .139    .761    .045    .727    .029
%RSD:     4.20    3.41     .61    8.93    1.55

PUBL:    7.300  51.500  16.150  17.100   4.290  99.740
%VAR:     1.05   -3.16    2.40    6.55   -2.62
DIFF:     .077  -1.627    .388   1.120   -.113
STDS:      526     528     524     542     574

STBE:   1.0000  1.0000  1.0002  1.0016  1.0007
STCT:  13994.5 51175.2 30140.3 12198.0  2796.8

UNBE:    .9700  1.0078   .9747  1.3558  1.7182
UNCT:   1064.3 25322.8  5120.5  1655.8    68.2
UNBG:     31.8   204.9   109.1    19.0     5.3
KRAW:    .0761   .4948   .1699   .1357   .0244
PKBG:    34.53  124.61   47.92   88.24   14.03


And yet another at 25 keV which is pretty tough for matrix corrections:

St  651 Set   4 NIST SRM C2402 (Hastelloy C), Results in Elemental Weight Percents

SPEC:       Co      Si      Mn       V      Cu
TYPE:     SPEC    SPEC    SPEC    SPEC    SPEC

AVER:    1.500    .850    .640    .220    .190
SDEV:     .000    .000    .000    .000    .000
 
ELEM:       Fe      Ni      Cr      Mo       W
BGDS:      LIN     LIN     EXP     LIN     LIN
TIME:   100.00  100.00  100.00  100.00  100.00
BEAM:    30.03   30.03   30.03   30.03   30.03

ELEM:       Fe      Ni      Cr      Mo       W   SUM 
   217   7.848  52.058  16.556  16.219   4.141 100.221
   218   7.565  50.339  16.474  17.953   4.270 100.002
   219   7.207  48.493  16.428  19.914   4.433  99.875
   220   7.243  48.395  16.514  19.730   4.225  99.506
   221   7.581  50.382  16.618  17.531   4.144  99.656

AVER:    7.489  49.933  16.518  18.269   4.243  99.852
SDEV:     .266   1.526    .073   1.556    .120    .282
SERR:     .119    .683    .033    .696    .053
%RSD:     3.55    3.06     .44    8.52    2.82

PUBL:    7.300  51.500  16.150  17.100   4.290  99.740
%VAR:     2.58   -3.04    2.28    6.84   -1.10
DIFF:     .189  -1.567    .368   1.169   -.047
STDS:      526     528     524     542     574

STBE:   1.0000  1.0000  1.0002  1.0016  1.0007
STCT:  23100.2 88504.6 46670.5 14785.3  3113.6

UNBE:   1.0002  1.0332  1.0016  1.4466  1.8458
UNCT:   1729.7 42771.5  7706.4  1886.1    71.8
UNBG:     43.9   288.2   147.2    21.0     5.8
KRAW:    .0749   .4833   .1651   .1276   .0231
PKBG:    40.46  149.39   53.35   91.01   13.49


In most cases, the precision is worse than the accuracy, and the accuracy is averaging 2-3% or better in a heavily fluorescent system.
« Last Edit: April 21, 2015, 07:35:45 am by John Donovan »
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Re: PENEPMA Alpha Factors Binary Wishlist
« Reply #6 on: February 14, 2020, 01:00:25 pm »
I wanted to mention that the latest Matrix.mdb database of k-ratios from Penfluor/Fanal Monte Carlo (fluorescence effects from Fanal) calculations is provided in the recent CalcZAF.msi update (v. 12.8.3) here:

https://probesoftware.com/download/CalcZAF.msi

Be sure to download and install this CalcZAF.msi installer, *before* you run the ProbeforEPMA.msi installer, or you might not get your Matrix.mdb database updated. Once can also directly download this Matrix.mdb database file from here (note, the filename is case sensitive!):

https://probesoftware.com/download/Matrix.mdb

This Matrix.mdb file should be copied to the C:\ProgramData\Probe Software\Probe for EPMA folder, and overwrite your existing file.

There are over 460K Monte Carlo derived k-ratios covering much of the periodic table in here. Seems to me this might make an interesting data visualization project for some bright young person!

The details are found in the paper attached to this post:

https://probesoftware.com/smf/index.php?topic=152.msg8276#msg8276
« Last Edit: February 14, 2020, 02:57:32 pm by John Donovan »
John J. Donovan, Pres. 
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