COLLISIONS OF KILO-ELECTRON-VOLT H+ AND HE+ WITH MOLECULES AT SMALL ANGLES - ABSOLUTE DIFFERENTIAL CROSS-SECTIONS FOR CHARGE-TRANSFER

Absolute differential cross sections for charge-transfer scattering of H+ and He+ from molecules are reported over the laboratory angular range 0.02°1.0°. Cross sections have been determined at 0.5, 1.5, and 5.0 keV for collisions of H+ with N2 and O2, and at 1.5 keV for collisions of H+ with CO, CO2, NO, and CH4, and of He+ with H2, N2, O2, CO, and NO. The data exhibit considerable structure over the experimental angular range. Absolute integral cross sections from 0°to 1.0°have been obtained and are compared with the published total cross sections. © 1990 The American Physical Society.