Coefficient of volumetric ionization of neutral molecules by electrons¶
At a certain voltage, the gas discharge becomes independent. To find this voltage, it is necessary to know the (volumetric) ionization coefficient. And it, in turn, depends on the energy distribution of electrons and can be approximated by the expression below.
Links:
- ionization_coefficient¶
ionization_coefficientof the gas.- Symbol:
alpha- Latex:
\(\alpha\)
- Dimension:
1/length
- first_constant¶
The first gas constant used in this model.
- Symbol:
A- Latex:
\(A\)
- Dimension:
1/(length*pressure)
- second_constant¶
The second gas constant used in this model.
- Symbol:
B- Latex:
\(B\)
- Dimension:
voltage/(length*pressure)
- electric_field_strength¶
-
- Symbol:
E- Latex:
\(E\)
- Dimension:
voltage/length
- law¶
alpha = A * p * exp(-B * p / E)- Latex:
- \[\alpha = A p \exp{\left(- \frac{B p}{E} \right)}\]