denoted

Figs. 9-12 are given for different values of coefficients
f i ( i = 1,2,3,4) and different number of FCs.
E - E / E
t1 t2 0
0.005
0.004
0.003
0.002
0.001
N =50 e
-1 -0.5 0.5 1 x/a
0.0002 N e=80
0.00015
0.0001
0.00005
E t1- E t2/
E0
-1 -0.5 0.5 1 x/a
Fig. 9 - Change of tangential component of electrostatic field at
the separating surface air - dielectric body for
f 1 = 0.9 , f 2 =1.2 , f3 = 0. 9 , f 4 = 1. 1
and different number of fictitious charges
E t1- E t2/
E0
0.0000175
0.000015
0.0000125
0.00001
7.5.
10 -6
5.
10 -6
.
2.5 10 -6
N =50 e
-1 -0.5 0.5 1 x/a
2.
.
1.5 10 - 8
.
110 - 8
.
E t1- E t2/
E0
10 - 8
5 10 -9
N =80 e
-1 -0.5 0.5 1
x/a
Fig. 10 - Change of tangential component of electrostatic field
at the separating surface air - dielectric body for
f 1 = 0.8 , f 2 =1. 4 , f3 = 0.6 , f 4 =1. 2
and different number of fictitious charges
E t3- E t4/
E0
0.0175
0.015
N e=50
0.0125
0.01
0.0075
0.005
0.0025
E t3- E t4/
E0
0.001
0.0008
0.0006
0.0004
0.0002
0.3 0.4 0.5 0.6 0.7 x/a
N =80 e
0.3 0.4 0.5 0.6 0.7 x/a
Fig. 11 - Change of tangential component of electrostatic field
at the separating surface dielectric body - cavity for
f 1 = 0.9 , f 2 =1. 2 , f3 = 0.9 , f 4 =1. 1
and different number of fictitious charges
E t3- E t4/
E0
0.00025
0.0002
0.00015
0.0001
0.00005
N =50 e
0.3 0.4 0.5 0.6 0.7
E t3- E t4/
E0
1.2.
10 -6
110 . -6 N e=80
8.
10 -7
6.
10 -7
410 . -7
210 . -7
0.3 0.4 0.5 0.6 0.7
x/a
x/a
Fig. 12 - Change of tangential component of electrostatic field
at the separating surface dielectric body - cavity for
f 1 = 0.8 , f 2 =1. 4 , f3 = 0.6 , f 4 =1. 2
and different number of fictitious charges
A good satisfaction of boundary condition is accomplished
with increase of FCs number. However, better satisfaction
of boundary condition is obtained when FCs are
a little further from separating surface (Fig. 10 and Fig.