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Variables in the EXAFS formula


 
k
The wave number in units of Åtex2html_wrap_inline3279. tex2html_wrap_inline3405 where E is energy and tex2html_wrap_inline3409 is the Fermi level computed from electron gas theory at the average interstitial charge density.
tex2html_wrap_inline3343

displaymath3413
tex2html_wrap_inline3391
The total central atom phase shift, tex2html_wrap_inline3417
tex2html_wrap_inline3419
The effective curved-wave backscattering amplitude in the EXAFS formula for each shell.
tex2html_wrap_inline3395
The phase shift for each shell
tex2html_wrap_inline3423
The total central atom loss factor, tex2html_wrap_inline3425
R
The distance to central atom for each shell
N
The mean number atoms in each shell
tex2html_wrap_inline3431
The mean square fluctuation in R for each shell
tex2html_wrap_inline3397
The mean free path in Å, tex2html_wrap_inline3437
tex2html_wrap_inline3439
The Fermi momentum at the average interstitial charge density
p(r)
The local momentum, tex2html_wrap_inline3443
tex2html_wrap_inline3445
The energy dependent self energy at energy, tex2html_wrap_inline3447 is the self energy at the Fermi energy.
tex2html_wrap_inline3449
The total absorption cross-section
tex2html_wrap_inline3451
The embedded atomic background absorption



John J. Rehr
Thu Jul 1 14:31:17 PDT 1999