Electrical conductivity of a partially ionized gas mixture in a magnetic field

1965 ◽  
Vol 6 (4) ◽  
pp. 41-43
Author(s):  
V. M. Zhdanov
Keyword(s):  
Magnetic Field ◽  
Electrical Conductivity ◽  
Gas Mixture ◽  
Ionized Gas ◽  
Partially Ionized

Exploring the nonextensive thermodynamics of partially ionized gas in magnetic field

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
June Young Kim ◽  
Hyo-Chang Lee ◽  
Geunwoo Go ◽  
Yeong Hwan Choi ◽  
Y. S. Hwang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Ionized Gas ◽  
Nonextensive Thermodynamics ◽  
Partially Ionized

The Effects of Hall and Ion Slip on the Electrical Conductivity of Partially Ionized Gases for Magnetohydrodynamic Re-Entry Vehicle Application

1962 ◽  
Vol 84 (2) ◽  
pp. 177-184 ◽  
Author(s):  
M. J. Brunner
Keyword(s):  
Electrical Conductivity ◽  
Cross Sections ◽  
Effective Conductivity ◽  
Ionized Gas ◽  
Equilibrium Conditions ◽  
Degree Of Ionization ◽  
Slip Effects ◽  
Wide Range ◽  
Ion Slip ◽  
Partially Ionized

The presence of a partially ionized gas around a hypersonic vehicle permits the application of magnetohydrodynamic (MHD) devices during re-entry. The operation of such MHD devices on a re-entry vehicle will largely depend on the magnitude of the electrical conductivity of the gas between the electrodes. In some cases it may be necessary to seed the air in order to insure high conductivity. The operation of the re-entry vehicle at relatively low gas densities and high magnetic fields will produce Hall and ion slip effects which may materially reduce the effective conductivity between the electrodes. The electrical conductivity including Hall and ion slip effects for air is presented for a wide range of pressures and temperatures and for a typical re-entry vehicle, with and without seeding. The electrical conductivity is evaluated for equilibrium conditions considering the number density and collision cross sections for electrons, neutrals, and ions. The Hall and ion slip effects are evaluated from the degree of ionization, the cyclotron frequency, and the time between collisions for electrons, neutrals, and ions.

Ramsauer–Townsend effect and the electrical conductivity of a partially ionized gas

1978 ◽  
Vol 21 (5) ◽  
pp. 856 ◽  
Author(s):  
Robert L. W. Chen ◽  
Edward R. Hobbs
Keyword(s):  
Electrical Conductivity ◽  
Ionized Gas ◽  
Partially Ionized

scholarly journals The Electrical Conductivity of a Partially Ionized Argon-Potassium Plasma in a Magnetic Field

1966 ◽  
Vol 21 (9) ◽  
pp. 1468-1470 ◽  
Author(s):  
W. Feneberg
Keyword(s):  
Magnetic Field ◽  
Electrical Conductivity ◽  
Laguerre Polynomials ◽  
Lorentz Gas ◽  
Small Deviations ◽  
Starting Point ◽  
Potassium Plasma ◽  
Partially Ionized ◽  
Ramsauer Effect ◽  
The Magnetic Field

In the case of small deviations from thermal equilibrium the second ENSKOG approximation is used as a starting point for solving the BOLTZMANN equation of the electrons in a partially ionized plasma. The distribution function is expanded according to LAGUERRE polynomials up to the order of 3. In this order the electrical conductivity of a LORENTZ gas, which is known exactly, is obtained to an accuracy of roughly 5%. The approximation tested in this way was then used to calculate the conductivity of an argon-potassium mixture at electron temperatures between 2000°K and 3500°K.If only he collisions between electrons and argon atoms were to be considered, the electrical conductivity in the absence of a magnetic field would, in view of the RAMSAUER effect, be greater by a factor of 2.8 than that obtained with an infinitely strong magnetic field. When the interaction with the potassium atoms and the COULOMB interaction are taken into account as well the conductivity in the magnetic field varies by about 20%.

ALFVÉN WAVES IN PARTIALLY IONIZED GASES

1961 ◽  
Vol 39 (8) ◽  
pp. 1197-1211 ◽  
Author(s):  
Tomiya Watanabe
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Ionized Gas ◽  
Partially Ionized

The conditions for a wave, propagated in a partially ionized gas along an external magnetic field, to be of Alfvén type have been obtained.

Heat Transfer From Partially Ionized Gases in the Presence of an Axial Magnetic Field

1962 ◽  
Vol 84 (2) ◽  
pp. 169-176 ◽  
Author(s):  
V. J. Raelson ◽  
P. J. Dickerman
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Field Strength ◽  
Axial Magnetic Field ◽  
Plasma Generator ◽  
Ionized Gas ◽  
Test Channel ◽  
Boundary Layer Region ◽  
Partially Ionized ◽  
Layer Region

This work was performed in order to investigate the influence of an axial magnetic field on the flow properties and heat-transfer characteristics of a partially ionized gas in a cylindrical flow channel. A description of the plasma generator and test channel is given along with experimental results for heat-transfer measurements at the channel wall and flow conditions within the channel as a function of field strength. Data obtained show a heat-flux reduction to the walls of the order of 20 per cent for a field strength of 20 kilogauss with indications that the interaction is limited to the boundary-layer region.

Sign in / Sign up

Export Citation Format

Share Document