Environmental Engineering Reference
In-Depth Information
Figure 4.2
The reduced coefficient of transverse diffusion for electrons moving in helium in an
external electric field. The values refer to the regime of a low number density of electrons and
are obtained on the basis of experimental data collected in [37].
Figure 4.3
The reduced coefficient of transverse diffusion for electrons moving in argon in an
external electric field. The values refer to the regime of a low number density of electrons and
were obtained on the basis of experimental data reported in [37].
case where
6Å
2
. We have on the basis of (3.27) for the isotropic part of the
electron distribution function
σ
m
e
2
exp
,
3/2
2
N
e
πΓ
ε
f
0
(
ε
)
D
(4.66)
2
0
(3/4)
ε
ε
0
where this distribution function is normalized to the number density of electrons
and
r
m
a
3
m
e
ε
D
eE
λ
,
0
