Simulation of the critical ionization velocity - Effect of using physically correct mass ratios

Details Simulation of the critical ionization velocity - Effect of using physically correct mass ratios Simulation of the critical ionization velocity - Effect of using physically correct mass ratios

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.6451b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A5, May 1, 1992, p. 6451-6465.

Physics

6

Computerized Simulation, Critical Velocity, Gas Ionization, Mass Ratios, Frequency Response, Ion Cyclotron Radiation, Ion Production Rates, Particle In Cell Technique

Scientific paper

Numerical simulations of the critical ionization velocity using artificial and realistic mass ratios are compared. An implicit particle-in-cell code is employed to allow the realistic mass ratio simulations to be performed efficiently. Several numerical aspects of using implicit codes, such as the undesirable damping of upper hybrid heating, are discussed. The results indicate that when scaled appropriately, simulations using physical and unphysical mass ratios provide nearly identical results when the anomalous ionization rate is either much lower than the ion cyclotron frequency or greater than the ion cyclotron frequency.

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