
TY  - JOUR
A1  - Hegerberg, R 
A1  - Crompton, RW 
T1  - Diffusion, Attachment and Attachment Cooling of Thermal Electrons in Oxygen and Oxygen Mixtures
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1983
VL  - 36
IS  - 6
SP  - 831
EP  - 844
KW  - 
UR  - https://doi.org/10.1071/PH830831 
N2  - The Cavalieri electron density sampling technique has been used to measure the diffusion and attachment rate coefficients for thermal electrons in O2, and in O2&#8211;N2 and O2&#8211;C02 mixtures. The observed pressure dependence of the three-body attachment rate coefficient va/N2 is shown to be caused by the selective removal of electrons from the distribution at the attachment resonance energy, and the magnitude of this effect (so-called 'attachment cooling') is shown to be a measure of the magnitude of the rotational excitation cross sections in O2 and N2. Three-body rate coefficients for the formation of O2 involving O2, N2 and CO&#175;2 as third bodies have been found to be 2.2,011 and 3.5 X 10&#175;30 cm6 S&#175l respectively. The value of the diffusion coefficient ND for thermal electrons in O2 is found to be (37 ± 3) x 1021 cm&#175;1s&#175;1. 
ER  -

