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  • 1
    Electronic Resource
    Electronic Resource
    Resonator amplification of microwave emission from a relativistic beam-plasma system (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 5381-5385 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Electromagnetic emission produced by a propagating electron beam in a cylindrical drift chamber can be amplified by axially reflecting screens. Radiation appears at the first and second plasma harmonics with linewidths ∼0.1 νp. Amplification scales with νp2 and lags electron-beam voltage by several hundred nanoseconds, implying that electrostatic waves moving at the electron thermal speed must traverse the resonator before amplification begins. Rotating the reflectors beyond 30° lessens amplification, suggesting a broad reflection property.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350558
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Microwave radiation by a relativistic electron beam propagation through low-pressure air (1985)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 28 (1985), S. 366-371 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Intense relativistic electron beams fired into air at varying pressures display a wide range of microwave signatures. These experiments held beam current, energy, and pulse length constant while varying gas pressure. Our observing window is 10 to 40 GHz. At low pressures (〈10 mTorr) exponential spectra result, consistent with beam reflexing or virtual cathode oscillations. Above 20 mTorr the spectrum flattens and suggests collective emission at the beam-generated plasma frequencies. Power falls linearly with pressure above 20 mTorr, until electron-Neutral collisions damp the emission at a few Torr. However, weak 10 GHz emission appears at full atmospheric pressure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865157
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Small simple hydrogen plasma gun (1985)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 1472-1474 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A small hydrogen plasma gun was constructed using graphite plates and TiH2. The gun, as small as 5 cm in diameter and 7 mm thick, produces ∼1013 cm−3 plasma in a volume of ∼0.1 m3. A 10-kA current for ∼15 μs is needed to drive the gun. One or more guns can be connected to the same system, an arrangement which allows flexibility in controlling the plasma profile in the experiment. A system employing four similar plasma guns connected in parallel is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1138137
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    Paper (German National Licenses)
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