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  • 1
    Electronic Resource
    Electronic Resource
    THE PHOTOCHEMICAL REARRANGEMENT OF ACETYLCHLORO-AMINOBENZENE (1927)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 49 (1927), S. 2145-2149 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01408a004
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Expansion and electron emission characteristics of a hollow-cathode plasma contactor (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 7094-7100 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A theory is presented to explain the observed electron emission characteristics of a hollow-cathode-based plasma source. The theory is compared with measurements made in a laboratory vacuum facility and is used to predict emission characteristics when the source plasma expands into an ambient space plasma. Crucial to understanding the observed emission current-voltage characteristic of hollow-cathode-type devices is the recognition of the role of emission current, not just the current in the main discharge circuit, in ionization of the neutral gas flowing through the device. This ionization can lead to breakdown of the sort that is familiar in many gas discharge devices. Equally crucial to understanding the low impedance capability of the device in coupling spacecraft to an ambient space plasma is recognition of the role of escaping as well as trapped source electrons in the formation of the space potential profile. The presence of these electrons, according to the theory, results in space electron emission current-voltage characteristics which are well approximated by those observed in laboratory chambers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355023
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    High-current-density metal-ion implantation : Proceedings of the fourth International Conference on Ion Sources (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2491-2493 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Design features and preliminary performance data for an ion-implantation system that derives its broad, high-current-density beam directly from a steady, metal-plasma discharge in a high temperature graphite chamber are described. Metal vapor is supplied by drawing electron current to an anode-potential crucible to vaporize a pure metal in it. Argon used to start the discharge is turned off once sufficient metal vapor is present to sustain it. Extraction of metal-ion beams that are several centimeters in diameter at current densities ranging to several hundred μA/cm2 of titanium or copper onto targets 50 cm from the ion source is demonstrated. The system is simple, reliable, and easy to maintain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142922
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Space-charge-limited current flow in a spherical double sheath (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 2280-2284 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Solutions to the problem of counterflowing, space-charge-limited, negatively and positively charged particle currents between two spherical surfaces are presented. They show that the current magnitudes exhibit the usual 3/2 power dependence on driving potential difference and square root dependence on particle charge-to-mass ratio. The magnitude of either current is strongly dependent on the radius ratio of the two spherical surfaces. The relative magnitudes of the two counterflowing currents are related by the square root of the mass ratio of the two charged particle species and a radius ratio factor that lies in the range ∼0.1–1.0.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337189
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    Paper (German National Licenses)
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