Interaction of Electromagnetic Waves of Radio-Frequency in Isothermal Plasmas: Collision Cross Section of Helium Atoms and Ions for Electrons

Microwave Interactions in Cryogenic Afterglow Plasmas

“…1 ' 2 The relaxation of the electron collision frequency in the wake of the "heating" wave, as detected by the "sensing" signal, has been related to electron-collisional processes within the plasma and in the case of helium at 300°K has been demonstrated to have an exponential behavior for sufficiently small electron energy deviations. 3 The purpose of this note is to briefly report significant deviations from the previously reported behavior of both the "quenching" of the afterglow light intensity and the microwave cross modulation in the case of helium under circumstances where the parent gas is maintained at 4.2°K and 77°K and in the case of neon maintained at 77°K.…”

Effect of the radio frequency discharge on the dust charging process in a weakly collisional and fully ionized plasma

“…Useful information about experimental measurements of the collision frequency between neutral atoms, electrons, and ions has been gathered in two comprehensive reviews. 16,17 However, for a fully ionized gas, the dominated collision is the ion-electron collision. 3 An array of well-known books 1-3 and articles [18][19][20] has investigated this situation when two charged particles collide with each other.…”

Simulation of geophysical phenomena in the laboratory

“…31 > 32 Using this technique, it was possible to determine the effective electron-neutral collision frequency and also to ascertain the electron-ion contribution to the conductivity. 33 Subsequent studies 34 led to a determination of the times for equipartition of energy between electrons and ions due to Coulomb collisions. Further refinement enabled a study of electron-electron effects 35 in the plasma and electron temperature dependence of the recombination coefficient 36 by the same techniques.…”