ABSTRACT
Parameter i-Butane Butane Units
Polarizability 9.06 9.12 F m2
Dipole moment 0.132 ≤0.05a D
Ionization potential 10.57 10.57 eV
Dissociation potential 3.823 3.854 eV
a Gee and Freeman (1983).
Target gas Molecular formula
Structural formula
Methane
Ethane
Ethene
Propane
Propene
Cyclopropane
n-Butane
Isobutane
1-Butene
Acetylene
C2H6
C2H4
C3H8
C3H6
C3H6
C4H10
C4H10
C4H8
C2H2
CH4
H – C ––– C-H
C
C C
C
CCC
C C C
C C C C
C C C
C C CC
C
C C
C C
1 10 100 Energy (eV)
0 1000
Total cross section
Butane Isobutane Butane
Q T (1
m 2 )
Selected References for D
Quantity Range Reference
W 0.2-30 Td Floriano et al. (1986)
QT 5-400 eV Floeder et al. (1985)
QT 1-50 eV Brüche (1930)
Note:QT = total; W = drift velocity.
