16.2 VLEED Capacity and Reliability
325
λ
I
I 0
00
8
1 2
1 6
8
12
16
0
4
8
0
4
8
(%)
0
(a) z
(b)
A
B
A
B
A
B
B
A
0
4
8
α
8
1 2
1 6
(d)
Energy (eV)
0
8
12
16
0
4
8
(c) V
A
A
B
B
Fig. 16.6 VLEED spectral sensitivity to the SPB parameters that vary by ±10% [13, 14]. Panels
(a–c) show the effect of the elastic potential on the phase change of the beams. A 20% change of
the V 0 , z 0 and λ in ReV(z) has the similar effect causing a π phase change. Obviously, the elastic
potential dominates the shape of the spectrum at energy covering the valence band ≤12.0 eV. Broken
line is the reference spectrum [3]. (Reprinted with permission from [13, 14])
325
λ
I
I 0
00
8
1 2
1 6
8
12
16
0
4
8
0
4
8
(%)
0
(a) z
(b)
A
B
A
B
A
B
B
A
0
4
8
α
8
1 2
1 6
(d)
Energy (eV)
0
8
12
16
0
4
8
(c) V
A
A
B
B
Fig. 16.6 VLEED spectral sensitivity to the SPB parameters that vary by ±10% [13, 14]. Panels
(a–c) show the effect of the elastic potential on the phase change of the beams. A 20% change of
the V 0 , z 0 and λ in ReV(z) has the similar effect causing a π phase change. Obviously, the elastic
potential dominates the shape of the spectrum at energy covering the valence band ≤12.0 eV. Broken
line is the reference spectrum [3]. (Reprinted with permission from [13, 14])