Emission of electrons from a streaming plasma - Determination of 'emission' electron temperature
Abstract
The paper describes an experimental study of thermionic emission from a plasma jet (the cathode of a vacuum diode) produced by an intense 30-ns pulse from a neodymium laser. Large emission currents are explained by a mechanism of compensation of electron space-charge and the presence of virtual diodes on which effective potential drop occurs. The effect of load on current is associated with the existence of significant displacement currents. Values of convection current and of electron temperature are determined from an analysis of volt-ampere characteristics.
- Publication:
-
Teplofizika Vysokikh Temperatur
- Pub Date:
- September 1977
- Bibcode:
- 1977TepVT..15..941D
- Keywords:
-
- Electron Emission;
- Electron Energy;
- Plasma Diagnostics;
- Plasma Jets;
- Thermionic Emission;
- Tube Cathodes;
- Convection Currents;
- Electrical Resistivity;
- Laser Plasmas;
- Neodymium Lasers;
- Pulsed Lasers;
- Temperature Measurement;
- Vacuum Tubes;
- Volt-Ampere Characteristics;
- Plasma Physics