Stability of Brillouin flow in planar, conventional, and inverted magnetrons
Abstract
The Brillouin flow is the prevalent flow in crossed-field devices. We systematically study its stability in the conventional, planar, and inverted magnetron geometry. To investigate the intrinsic negative mass effect in Brillouin flow, we consider electrostatic modes in a nonrelativistic, smooth bore magnetron. We found that the Brillouin flow in the inverted magnetron is more unstable than that in a planar magnetron, which in turn is more unstable than that in the conventional magnetron. Thus, oscillations in the inverted magnetron may startup faster than the conventional magnetron. This result is consistent with simulations, and with the negative mass property in the inverted magnetron configuration. Inclusion of relativistic effects and electromagnetic effects does not qualitatively change these conclusions.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 01, 2015
- Source ID
- 10.1063/1.4927798
Entities
People
- B. W. Hoff
- David Simon
- Geoffrey B. Greening
- Patrick Wong
- Ronald Gilgenbach
- Y. Y. Lau
Organizations
- Air Force Office of Scientific Research
- Air Force Research Laboratory
- Office of Naval Research
- University of Michigan