Mean energy of electrons in the oxygen discharge plasma

The mean energy of electrons in the homogeneous form of the positive column in an oxygen discharge is determined. The mean energy of electrons is calculated from double-probe characteristics under the assumption of a Druyvesteyn distribution using volt-equivalents of the electron temperature. The relation between the mean energy of electrons andE/p is compared with the theoretical results of another author. As a result of this comparison it can be concluded that for some discharge conditions the energy distribution of electrons is very close to a Druyvesteynian. We also analyze the influence of the negative ions on the double-probe characteristics.The author is obliged to Dr. O.tirand, Dr. L.Pekárek and Dr. J.Skála for their support of this work and helpful comments.