Transport of long-pulse, high-current electron beams in preformed monatomic plasma channels in the ions focus regime

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (USA)

DOI:https://doi.org/10.1109/27.55940· OSTI ID:6780990

Miller, J D ^[1]; Gilgenbach, R M ^[2]

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1. Naval Surface Warfare Center, Silver Spring, MD (US)
2. Michigan Univ., Ann Arbor, MI (USA). Dept. of Nuclear Engineering

Experiments have been performed demonstrating the efficient transport of long-pulse, high-current electron beams in well-diagnosed, preformed plasma channels. Channels were created by the low-energy electron-beam ionization of low-pressure monatomic gases. These transport efficiencies are comparable to the optimum values obtained for similar pulselengths in previous long-pulse, electron-beam transport experiments in laser-preionized diethylaniline gas. Experimental results show the development of both transverse current centroid oscillations characteristic of the ion hose instability and the microwave emission indicative of relativistic electron beam-plasma electron two-stream instability. Significant microwave emission indicating rapid growth of the two-stream instability has been observed in the {ital S}-band when the space-charge neutralization fraction {ital f{sub e}} exceeds unity.

• OSTI ID: 6780990
• Journal Information: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (USA), Journal Name: IEEE Transactions on Plasma Science (Institute of Electrical and Electronics Engineers); (USA) Vol. 18:3; ISSN 0093-3813; ISSN ITPSB
• Country of Publication: United States
• Language: English

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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AMINES
ANILINE
AROMATICS
BEAM INJECTION
BEAMS
ELECTROMAGNETIC RADIATION
ELECTRON BEAM INJECTION
ELECTRON BEAMS
EMISSION SPECTRA
FLUIDS
GASES
INSTABILITY
IONIZATION
LEPTON BEAMS
LONG WAVE RADIATION
LOW PRESSURE
MICROWAVE RADIATION
ORGANIC COMPOUNDS
PARTICLE BEAMS
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA PRODUCTION
RADIATIONS
RADIOWAVE RADIATION
SPACE CHARGE
SPECTRA
TWO-STREAM INSTABILITY