Effects of rf magnetic field and wave reflection on multipactor discharge on a dielectric
- Institute of Applied Physics, Russian Academy of Sciences, 603950 Nizhny Novgorod (Russian Federation)
This paper analyzes the effects of the rf magnetic field and partial reflection of the circularly polarized electromagnetic wave on multipactor discharge on a dielectric. A statistical theory (taking into account the velocity spread of injected electrons) is constructed to evaluate the multipactor induced breakdown and saturation level. It is concluded that the spread of initial velocities considerably changes the condition for multipactor initiation in comparison with the dynamic approach. This effect is especially strong for the case of relatively low rf electric field amplitude (when the transit time essentially exceeds the rf period) and leads to the oscillation suppression of effective electron yield and to an increase in the threshold of multipactor growth. It is established that the rf magnetic field eliminates the upper boundary of the susceptibility diagram, while the low boundary almost remains unchanged. It is also found that the presence of partial reflection causes degradation of the saturation level (in comparison with the nonreflecting case) and results in decreasing of the characteristic time required to achieve the steady state.
- OSTI ID:
- 21347214
- Journal Information:
- Physics of Plasmas, Vol. 17, Issue 3; Other Information: DOI: 10.1063/1.3356082; (c) 2010 American Institute of Physics; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Multipactor susceptibility on a dielectric with a bias dc electric field and a background gas
Particle-in-cell simulation of multipactor discharge on a dielectric in a parallel-plate waveguide