Calculations of drift velocity of electrons in inert gases at low E/N

Abstract

The zero field reduced mobilities of electrons μ0 in helium, neon, argon, krypton, and xenon have been calculated as a function of gas temperatures T using the Boltzmann equation and compared with the values of the thermal electron mobilities of electrons μN obtained by Mozumder [J. Chem. Phys. 72, 6289 (1980)]. Discussion has been made about the large discrepancies between the measured and calculated values of μN in neon which were pointed out by Mozumder. The calculated exact drift velocities W in helium as a function of E/N and T have been compared with the experimental results of W for wide E/N and T ranges. A summarized figure is shown for anomalous electron mobilities in helium as a function of N at low E/N.

e--Ar scattering length from drift velocities measured in argon-hydrogen mixtures

“…Among those phenomena are negative differential conductivity (Long et al 1976, PetroviE et al 1984, Robson 1984, Lando et al 1987. electron thermalization and transient negative conductivity (Mozumder 1981, Hayashi and Usheroda 1983, Shizgal and McMahon 1985. and discharge instabilities (Zigman and MiliC 1988).…”

Multipactor susceptibility on a dielectric with a bias dc electric field and a background gas

“…In this study, we choose Argon as an example for simplicity in its chemistry; its ionization and other collision cross sections are well characterized [35][36][37] and straightforward (compared with air). At low gas pressure (<50 Torr), the electron energy distribution may be approximated as Maxwellian, 24…”

Influence of Penning Ionization on Glowlike Dielectric Barrier Discharge Formation in Medium-Pressure Ar

“…Therefore, the effective -coefficient must be lower in Ar/C 2 H 4 (0.1%) than that in pure Ar. Figure 4 shows the direct ionization coefficient in Ar/C 2 H 4 mixtures, as obtained by Boltzmann equation analysis of two-term approximation using cross sections for Ar [15][16][17][18][19] and C 2 H 4 . 20) The small amount of added C 2 H 4 increases the ionization coefficient at low E=N (below 30 Td) because the ionization of C 2 H 4 becomes dominant in this region.…”