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DAFS - Universidad de Zaragoza

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Zona <strong>de</strong>l umbral (DANES) Mo<strong>de</strong>lo reflexión ATS<br />

2 16<br />

∝ 16 = // f⊥<br />

3<br />

I002 fb<br />

( ) 2<br />

f −<br />

Simulación “ab initio”:<br />

Calculos XANES <strong>de</strong> la sección<br />

eficaz <strong>de</strong> absorción s para un<br />

cluster FeO 6 con Fe(D)3d<br />

1s → 4p<br />

" ωmc<br />

µ = N σ f = 2<br />

4πNe "<br />

f ⇐ Kramers − Kronig ⇒<br />

'<br />

' 2 ω<br />

f P<br />

'2<br />

π ∫<br />

0 ω<br />

∞<br />

=<br />

f<br />

" (<br />

ω<br />

−ω<br />

'<br />

)<br />

'2<br />

d<br />

'<br />

ω<br />

µ<br />

f<br />

'<br />

7115 7120 7125 7130 7135<br />

E (KeV)<br />

f "<br />

µ ⊥≠µ //<br />

∆E≈2eV

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