ABSTRACT

Excitation level of 6.8 eV makes a strong contribution to the excitation cross section.

118.1 Selected References for Data ......................................................................................................................................... 630 118.2Total Scattering Cross Section...................................................................................................................................... 630 118.3 Differential Scattering Cross Section............................................................................................................................ 631 118.4 Elastic and Momentum Transfer Cross Sections.......................................................................................................... 632 118.5Excitation Cross Section................................................................................................................................................ 632 118.6 Ionization Cross Section ................................................................................................................................................ 632 118.7Attachment Processes................................................................................................................................................... 632 118.8Drift Velocity of Electrons............................................................................................................................................ 633 118.9Drift Velocity of Positive Ions....................................................................................................................................... 634 References................................................................................................................................................................................. 634

TABLE 118.1 Vibrational Modes and Energies of C6H6

Mode

Type of Motion Energy (meV)

Type of Motion

Energy (meV)

Shimanouchi (1972) Gallup (1993)

ν1 CH stretch 379.6 C-H stretch 380 ν2 Ring stretch 123.0 C-C stretch 123 ν3 CH bend 164.4 C-H || bend 148 ν4 CH bend 83.4 C-H ⊥ bend 83 ν5 CH stretch 380.4 C-H stretch 380 ν6 Ring deformation 125.2 C-C-C || bend 125 ν7 CH bend 123.4 C-H ⊥ bend 188 ν8 Ring deformation 87.2 C-C-C ⊥ bend 67 ν9 Ring stretch 162.4 C-C stretch 230 ν10 CH bend 142.6 C-H || bend 142 ν11 CH bend 105.3 CH ⊥ bend 105 ν12 CH stretch 379.8 C-H stretch 384 ν13 Ring stret + deform 184.2 C-C stretch 184

continued

See Table 118.3.