Thermal effects and space-charge limited transition in crossed-field devices
Abstract
A fully kinetic model for the electron flow in a crossed field device is derived and used to determine the system stationary states. It is found that for low injection temperatures, there is a simultaneous presence of distinct stationary solutions and an abrupt transition between accelerating and space-charge limited regimes. On the other hand, for high injection temperatures, there is only a single stationary solution branch and the change between the regimes becomes continuous. For intermediate temperatures, it is then identified a critical point that separates the abrupt and continuous behaviors. It is also investigated how intrinsic space-charge oscillations may drive stationary states unstable in certain parameter regimes. The results are verified with N-particle self-consistent simulations.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 01, 2014
- Source ID
- 10.1063/1.4893313
Entities
People
- Felipe B. Rizzato
- Renato Pakter
- Samuel Marini
Organizations
- Air Force Office of Scientific Research
- Federal University of Rio Grande do Sul