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H ≡ 0 , E = E0 ey . (144)<br />

The stationary Maxwell equations, in region 2,<br />

with<br />

0=c ∇×(E + E D ) , (145)<br />

0=j D el − c ∇×(H + H D ), (146)<br />

H D = −αc∇×E, E D = βc∇×H, j D el = σ E (147)<br />

are satisfied by the general solution<br />

where<br />

Ey = Ec + A e −x/λ , (148)<br />

Hz = − σ<br />

c Ec x + Hc − λ<br />

βc A e−x/λ ,<br />

<br />

αβc<br />

λ =<br />

2<br />

; (149)<br />

1+βσ<br />

The constant amplitudes Ec, Hc and A are to be determined from the connecting<br />

conditions at x = 0. These are (91), (93) and (97) (no surface current)<br />

Ht + H D t =0, Et + E D t = E0 ey , (150)<br />

c H D t = ζ1 n × E D , (151)<br />

where the last equation is a result of E D ≡ 0 and H D ≡ 0 in vacuum, leading<br />

to<br />

R sf = ...c H D t · (n × E D ). (152)<br />

So the special solution is<br />

1<br />

Ey =<br />

1+βσ E0 + A e −x/λ , (153)<br />

σ<br />

Hz = −<br />

c (1 + βσ) E0 x − λ<br />

βc A e−x/λ − σλ<br />

A,<br />

c<br />

(154)<br />

E D y = βσ<br />

1+βσ E0 − A e −x/λ , (155)<br />

24

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