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Já a inclusão do senϕ leva a:<br />

ρ+ρ 2ρρcos( ϕ−ϕ)<br />

ρ+ρ<br />

−<br />

ω ω ω − ϕ imϕ<br />

2 2 2 2<br />

0 0 0 0<br />

− ∞<br />

2 2 2<br />

0 0 0<br />

im<br />

0<br />

e − e ⎛2ρρ<br />

⎞<br />

0<br />

sen ϕ e e = e ∑ e e Im<br />

2<br />

=<br />

m=−∞<br />

2i<br />

⎜ ω ⎟<br />

⎝ 0 ⎠<br />

iϕ<br />

−iϕ<br />

2 2<br />

ρ+ρ0<br />

− ∞<br />

ω<br />

2<br />

0 − im ϕ<br />

0<br />

im ( 1) im ( 1) 2 0<br />

(<br />

+ ϕ − ϕ<br />

⎛ ρρ<br />

∑<br />

) m<br />

⎜ 2<br />

m=−∞<br />

ω0<br />

1<br />

⎞<br />

= e e e − e I<br />

=<br />

2i<br />

⎟<br />

⎝ ⎠<br />

⎧<br />

⎪ ⎛ ⎞ ⎛ ⎞⎤<br />

= e ⎨ e e I ⎜ ⎟<br />

− e I<br />

⎜ ⎟⎥<br />

+<br />

⎪ ⎣ ⎝ ⎠ ⎝ ⎠⎥⎦<br />

2 2<br />

ρ+ρ0<br />

− ∞<br />

ω<br />

2<br />

⎪ 1<br />

0<br />

im ϕ<br />

⎡ − im ( + 1) ϕ 2ρρ<br />

0 0 − im ( − 1) ϕ 2ρρ<br />

0<br />

0<br />

∑ ⎢<br />

m+ 1 2 m−1<br />

2<br />

2i<br />

m=−∞<br />

⎢<br />

ω0 ω0<br />

⎪⎩ m≠0<br />

⎛2ρρ<br />

⎞⎤<br />

0<br />

e − e I1 ⎜ =<br />

2 ⎟⎥<br />

0<br />

⎡ 1 (<br />

iϕ0 −iϕ0<br />

⎢<br />

)<br />

2i<br />

⎜ ω ⎟<br />

⎢⎣<br />

⎝ ⎠⎥⎦<br />

2 2<br />

ρ+ρ<br />

⎧⎡<br />

⎤<br />

⎫<br />

0<br />

− ∞<br />

2 1<br />

0<br />

im im<br />

0<br />

i 2<br />

0 0 i 2<br />

0<br />

0 2 0<br />

e ω ⎪<br />

⎢<br />

e ϕ<br />

e − ϕ<br />

⎡<br />

e − ϕ<br />

⎛ ρρ ⎞<br />

Im<br />

1 e ϕ<br />

⎛ ρρ ⎞⎤⎥<br />

⎛ ρρ ⎞<br />

⎪<br />

= ⎨⎢<br />

∑ ⎢ + I<br />

2 m−1 sin<br />

2 0I1<br />

2<br />

2i<br />

⎜ ⎟<br />

− ⎜ ⎟⎥⎥+ ϕ ⎜ ⎟⎬=<br />

⎪<br />

m=−∞<br />

⎢⎣<br />

⎝ ω0 ⎠ ⎝ ω0 ⎠⎥⎦<br />

⎝ ω0<br />

⎠⎪<br />

⎪⎩⎢⎣<br />

m≠0<br />

⎥⎦<br />

⎪⎭<br />

2 2<br />

ρ+ρ<br />

⎧⎡<br />

⎤<br />

⎫<br />

0<br />

− ∞<br />

2 1<br />

0<br />

im im ( 1) 2<br />

0 0 2i<br />

2<br />

0<br />

0 2 0<br />

e ω ⎪⎢<br />

e ϕ<br />

e − − ϕ<br />

⎡ ⎛ ρρ ⎞<br />

Im<br />

1 e − ϕ<br />

⎛ ρρ ⎞⎤⎥<br />

⎛ ρρ ⎞<br />

⎪<br />

= ⎨⎢<br />

∑ ⎢ − I<br />

2 − m+<br />

1 sin<br />

2 ⎥⎥+ ϕ0I1<br />

2<br />

⎬ (3. 180)<br />

2i<br />

⎜ ⎟ ⎜ ⎟ ⎜ ⎟<br />

⎪<br />

m=−∞<br />

⎢⎣<br />

⎝ ω0 ⎠ ⎝ ω0 ⎠⎥⎦<br />

⎝ ω0<br />

⎠⎪<br />

⎪⎩⎢⎣<br />

m≠0<br />

⎥⎦<br />

⎪⎭<br />

Com isso, os campos radiais elétrico e magnético ficam <strong>da</strong>dos por:<br />

2 2<br />

ρ+ρ0<br />

∞ −<br />

2<br />

m ikz 1<br />

0<br />

( 1) 2<br />

0 0 2 2<br />

0<br />

0<br />

0 sin ω ⎪ im ϕ − im − ϕ ρρ − i ϕ ρρ<br />

r = ∑ θ ⎢ m− 1 +<br />

2 m+<br />

1 2<br />

m=−∞<br />

⎩<br />

2<br />

⎢ ω0 ω0<br />

m≠0<br />

⎧ ⎡ ⎛ ⎞ ⎛ ⎞⎤<br />

E E e e ⎨ e e I ⎜ ⎟<br />

e I<br />

⎜ ⎟⎥<br />

⎪ ⎣ ⎝ ⎠ ⎝ ⎠⎥⎦<br />

⎛ ⎞⎫<br />

+ cosϕ → = θ<br />

∞<br />

2ρρ0<br />

⎪ m ikz imϕ<br />

m<br />

0I1 ⎜ 2 ⎟⎬⎟<br />

Er<br />

∑ E0e sin e Fr<br />

⎝ ω0<br />

⎠⎭⎪<br />

m=−∞<br />

m≠0<br />

(3. 181)<br />

2 2<br />

ρ+ρ0<br />

∞ −<br />

2<br />

m ikz 1<br />

0<br />

( 1) 2<br />

0 0 2 2<br />

0<br />

0<br />

0 sin ω ⎪ im ϕ − im − ϕ ρρ − i ϕ ρρ<br />

r = ∑ θ ⎢ m− 1 −<br />

2 m+<br />

1 2<br />

m=−∞<br />

2i<br />

⎩<br />

⎢ ω0 ω0<br />

m≠0<br />

⎧ ⎡ ⎛ ⎞ ⎛ ⎞⎤<br />

H H e e ⎨ e e I ⎜ ⎟<br />

e I<br />

⎜ ⎟⎥<br />

⎪ ⎣ ⎝ ⎠ ⎝ ⎠⎥⎦<br />

(3. 182).<br />

⎛ ⎞⎫<br />

+ sin ϕ → = θ<br />

∞<br />

2ρρ0<br />

⎪ m ikz imϕ<br />

m<br />

0I1 ⎜ 2 ⎟⎬⎟<br />

Hr<br />

∑ H0e sin e Ir<br />

⎝ ω0<br />

⎠⎭⎪<br />

m=−∞<br />

m≠0<br />

Agora pod<strong>em</strong>os usar uma relação <strong>em</strong> m <strong>da</strong>s funções modifica<strong>da</strong>s de Bessel<br />

I− m( x) = Im( x)<br />

para limitar os somatórios de m = 0 até infinito, isolando o termo com<br />

m = 0 , reescrevendo as expressões acima como:<br />

114

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