Abstract
The absolute total electron scattering cross sections for NH3, OCS and N2O were measured using a linear transmission technique. The presented results cover the range of impact energy from 1 to 80 eV for NH3 and from 40 to 100 eV for OCS and N2O. The most prominent feature of the cross section for NH3 is the very broad hump centred at about 10 eV with a maximum value of 23.5*10-20 m2. Above 10 eV the present results on NH3 are in excellent agreement with recent calculations of Jain (1988).