Wave Propagation in Linear Media | re-examined

3.5 A dispersive system: the lossless plasma
0
L
2
4
6
8
10
0.01
0.1
1
ρ
10
0
100
0.6 0
0.4 0. ve/c
Figure 3.9: Evaluation of the `e ective' energy velocity (3.53) in the pass band of a lossless plasma
depending on length L and the termination factor . The signal frequency is !p=! =0:8. Note the
partially logarithmic scale.
0.01
0.6
0.4
ve/c
0.2
0
0
0.1
2
ρ
1
4
10
L
100
6
Figure 3.10: Evaluation of the `e ective' energy velocity (3.54) in the evanescent region of a lossless
plasma depending on the length L and the termination factor for !p=! =1:25. Note the partially
logarithmic scale.
45
8
10
0.2