Diffrazione - Consorzio Elettra 2000
Diffrazione - Consorzio Elettra 2000
Diffrazione - Consorzio Elettra 2000
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Ipotesi 2 + Ipotesi 3<br />
<strong>Diffrazione</strong> da Knife-Edge (3/4)<br />
F(θ,φ) = A costante ; χ ≅ 0<br />
d ≈ a , ρ ≈ b<br />
a denominatore si pone d = a , ρ = b<br />
negli esponenziali a numeratore si osserva che<br />
d ! a =<br />
( ) ( ) 2 2 2<br />
x + y<br />
x + y + a ! a = a 1+<br />
! a<br />
1+<br />
z<br />
!<br />
z"<br />
0<br />
' +<br />
d ! a ( a%<br />
1+<br />
%&<br />
2a<br />
( ) x<br />
2 2<br />
+ y<br />
1+<br />
z<br />
2<br />
(<br />
2 2) (<br />
2 2)<br />
x y $ x + y<br />
2<br />
" ! a =<br />
"#<br />
2a<br />
# " b !<br />
(Analogamente)<br />
2b<br />
2<br />
a<br />
2<br />
2
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