Transient response of a plane Langmuir probe
Abstract
The paper investigates the transient process caused by ion motion during a gradual change in surface charge density on a plane Langmuir probe. It is assumed that the time for this process is much greater than the time for the transient process due to electron motion. Use is made of a system of equations consisting of Poisson's equation, the charge conservation law, and an equation of motion. The time dependence of the current density on the probe is determined for three normalized initial ion velocities, and the change in the thickness of the electrode layer is calculated for the same three ion velocities.
 Publication:

Fizika
 Pub Date:
 1976
 Bibcode:
 1976Fiz....19...93K
 Keywords:

 Electrostatic Probes;
 Helium Plasma;
 Plasma Diagnostics;
 Transient Response;
 Conservation Equations;
 Current Density;
 Electron Density (Concentration);
 Equations Of Motion;
 Metallic Plasmas;
 Plasma Layers;
 Poisson Equation;
 Time Dependence;
 Plasma Physics