Hi,
I have used ARTEMIS to fit the EXAFS of a simple
Cu foil with the two diffrent machines, a 32 bit and 64 bit
ones, both running widows7, 32 ans 64 bit respectively.
The results obtained are slightly different, I
have appended the message with these results. the very low
value of R-factor produced with the 64bit system is difficult
to interpret. the questions are;
1- how to account for these differences?
2- if I to publish something, which measure of
the quality should I present? and how can I interpret it?
regards
Sameh
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32bit windows 7
Independent points = 12.172851562
Number of variables = 6.000000000
Chi-square = 53.001967099
Reduced Chi-square = 8.586301900
R-factor = 0.000163791 !!!
Measurement uncertainty (k) = 0.000110566
Measurement uncertainty (R) = 0.057163282
Number of data sets = 1.000000000
Guess parameters +/-
uncertainties (initial guess):
amp = 0.9907500 +/- 0.0312520
(1.0000)
enot = 5.6814210 +/- 0.3815760
(0.0000)
delr1 = 0.0016460 +/- 0.0033990
(0.0000)
ss1 = 0.0099820 +/- 0.0004090
(0.0030)
w1 3rd cumulant = 0.0001710 +/- 0.0000340
(0.0000)
p1 4th cumulant = 0.0000240 +/- 0.0000070
(0.0000)
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64bit windows 7
Independent points = 12.172851562
Number of variables = 6.000000000
Chi-square = 54.036163164
Reduced Chi-square = 8.753841335
R-factor = 0.309664502E-06 !!!
Measurement uncertainty (k) = 0.000097377
Measurement uncertainty (R) = 0.050344538
Number of data sets = 1.000000000
Guess parameters +/-
uncertainties (initial guess):
amp = 1.0029100 +/- 0.0296670
(1.0000)
enot = 5.7522760 +/- 0.4614510
(0.0000)
delr1 = 0.0024980 +/- 0.0040190
(0.0000)
ss1 = 0.0101430 +/- 0.0003790
(0.0030)
w1 3rd cumulant = 0.0001780 +/- 0.0000410
(0.0000)
p1 4th cumulant = 0.0000260 +/- 0.0000070
(0.0000)
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