Wave Propagation in Linear Media | re-examined

3.5 A dispersive system: the lossless plasma
0
0.66
ve/c 0.4 .4
0.2 .2
0
100
2
4
X
6
10
8
10
1
ρ
0.1
0.01
Figure 3.7: Evaluation of the energy velocity (3.46) in the pass band of a lossless plasma depending
on the spatial coordinate X and the termination factor . The length of the line is L = 10, the signal
frequency is given by !p=! =0:8. Note the partially logarithmic scale.
0
100
2
10
4
X
6
1
ρ
8
10
0.1
0.01
0.2
0
0.6
0.4
ve/c
Figure 3.8: Evaluation of the energy velocity (3.47) in the evanescent region of a lossless plasma
depending on the spatial coordinate X and the termination factor . The parameters are L = 10 and
!p=! =1:25 . Note the partially logarithmic scale.
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