Total cross section measurements for positrons and electrons colliding with molecules. II. HCl

Abstract

Total cross sections (TCSs) for 0.7-400 eV positrons and 0.8-400 eV electrons colliding with hydrogen chloride (HCl) have been measured using a linear transmission method. The data were corrected for the effects of forward scattering using the differential cross section (DCS). The magnitude of the correction was very large in the low energy region. The method of the correction is given in detail. The TCS curve of electrons has a small hump near 3 eV. The TCS for positrons is somewhat lower than that for electrons in the low energy region. In the intermediate energy region, the values of the TCSs for positrons and electrons approach each other.