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430 LES PORTIQUES
20 L = H =10 20 L = 10 ; H = 5
W h1 h2 W h1 h2
18 Hα α 18 Hα α
16 bL b 16 bL b
14 Hα α 14 Hα α
12 b Lb 12 bLb
10 k=1 10 k=1
2 8 2
8 64
8 64 10
10
∞
8∞
Z =0.75 Z =0.75
6 k=1 6 k=1 Z =0.375
∞ ∞ Z =0.25
2 2
L
8 6 4 8 6 4 H
10 10 8 9 10
4 ∞ 10 8 6 4 2 k=1 Z =0.375 4 ∞ 10 8 6 4 2 k=1 b
H 1.10
Z =0.25
1
2 2 0.90
0.83
L 0.80
0 H 0.70
01234567 0 0.60
0.57
8 9 10 01234567 0.50
50 Figure 2.23.7. b 50 Figure 2.23.8. 0.40
H 1.10 0.36
α L = H = 10 α L =10 ; H = 5
h1 h2 1 h1 h2 0.30
Hα α 0.90 Hα α
40 0.83 40
0.80
Z =0.25 b Lb
Z =0.375 Hα α 0.70 Z =0.25 b Lb
30 Z =0.375 Hα α
bL b 0.60 30 bL b
0.57 Z =0.75
0.50
Z =0.75
20 0.40 20
0.36
0.30
0.20 0.20
k=1
10 k=1 10
2
2
0.10 4 0.10
4 6
8
6 10
8
L
10
L
HH k =∞
0 k =∞ 0
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Figure 2.23.9. Figure 2.23.10.
