Electrode-plasma-driven radiation cutoff in long-pulse, high-power microwave devices

Journal Article · Fri Mar 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4794955· OSTI ID:22107732

Rose, D. V.; Miller, C. L.; Welch, D. R. ^[1]; Portillo, S. ^[2]

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1. Voss Scientific, LLC, Albuquerque, New Mexico 87108 (United States)
2. Naval Surface Warfare Center, Dahlgren, Virginia 22448 (United States)

The impact of electrode plasma dynamics on the radiation production in a high power microwave device is examined using particle-in-cell simulations. Using the design of a compact 2.4 GHz magnetically insulated line oscillator (MILO) as the basis for numerical simulations, we characterize the time-dependent device power and radiation output over a range of cathode plasma formation rates. These numerical simulations can self-consistently produce radiation characteristics that are similar to measured signals in long pulse duration MILOs. This modeling capability should result in improved assessment of existing high-power microwave devices and lead to new designs for increased radiation pulse durations.

• OSTI ID: 22107732
• Journal Information: Physics of Plasmas, Vol. 20, Issue 3; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CATHODES
COMPUTERIZED SIMULATION
DESIGN
GHZ RANGE 01-100
MICROWAVE RADIATION
NUMERICAL ANALYSIS
OSCILLATORS
PLASMA
PLASMA SIMULATION
PULSES
TIME DEPENDENCE