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Diffrazione - Consorzio Elettra 2000

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<strong>Diffrazione</strong> da KE<br />

Attenuazione Supplementare (2/3)<br />

Posto<br />

" = x $<br />

2 a + b<br />

! ab<br />

2<br />

2 a + b<br />

L S<br />

= E 0<br />

E = ! ab<br />

1<br />

2 a + b<br />

! ab<br />

h'<br />

# dx =<br />

+%<br />

&<br />

0<br />

+%<br />

&<br />

2 a+b<br />

! ab<br />

e " j # 2 $ 2 d$<br />

d"<br />

e " j # 2 $ 2 d$<br />

2 a + b<br />

! ab<br />

=<br />

h'<br />

+%<br />

&<br />

2 e " j # 2 $ 2 d$<br />

0<br />

+%<br />

&<br />

2 a+b<br />

! ab<br />

e " j # 2 $ 2 d$<br />

1 j #<br />

!<br />

4 = !<br />

" e<br />

2<br />

1<br />

2<br />

( 1 j)<br />

Integrale di Fresnel<br />

ν 0 : parametro di Fresnel<br />

L S<br />

= E 0<br />

E = 1<br />

+$<br />

1 + j<br />

e ! j " 2 # 2 d#<br />

2<br />

%<br />

# 0<br />

Si noti che:<br />

! o<br />

= h " 1<br />

2

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