Gaseous Electronics

127

IODOBENZENE

CONTENTS

127.1 Total Scattering Cross Section

127.2 Attachment Rate Constant

References

 

Iodobenzene (C₆H₅I) is a polar electron-attaching gas that has one hydrogen atom from benzene replaced with iodine atom. It has 94 electrons. The electronic polarizability is 17.25 × 10⁻⁴⁰ F m², dipole moment 1.70 D and ionization potential 8.685 eV. Resonances due to electron attachment are measured at 0.59 and 4.3 eV (Olthoff et al., 1985).

127.1 TOTAL SCATTERING CROSS SECTION

Integral electron scattering cross sections have been measured by Lunt et al. (1999) and shown in Figure 127.1. The highlights are

1.Low-energy scattering is observed to be governed by the dipole moment of the target.

2.The cross section increases toward ...