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  • Digitale Medien  (6)
  • 1995-1999  (3)
  • 1985-1989  (3)
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  • Digitale Medien  (6)
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  • 1
    Digitale Medien
    Digitale Medien
    Theoretical and experimental investigation of leakage power in microwave transmit–receive switches (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 6631-6638 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A theoretical and experimental investigation is made of the leakage power in microwave transmit–receive switches. The peak leakage power is shown to be independent of incident peak power but to depend on the rise time of the incident pulse. The plateau leakage power through the switch is also estimated and shown to be independent of incident peak power. The theoretical predictions for peak leakage power and plateau leakage power are compared and found to be in good agreement with experimental results. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.363781
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  • 2
    Digitale Medien
    Digitale Medien
    High-frequency capacitance of bipolar resonant tunneling diodes (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 905-910 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The high-frequency characteristics of bipolar resonant tunneling diodes are experimentally investigated at room temperature. The electron accumulation and discharging in these resonant tunneling light-emitting diodes are studied at frequencies up to 35 GHz. The experiments show capacitance peaks due to electron charge disappearing from the quantum well. The measurements are found to be in agreement with our theoretical model for the calculation of the high-frequency characteristics of resonant tunneling devices. The high-frequency characteristics of the bipolar light-emitting resonant tunneling diode are compared to the unipolar resonant tunneling diode and the resonant interband tunneling diode. The comparison shows a similar discharging characteristic of the quantum well, but a different overall variation of the capacitance. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.360870
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  • 3
    Digitale Medien
    Digitale Medien
    Experimental evidence for the existence of an overlap length in spin glasses (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5616-5618 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Zero-field-cooled magnetization measurements on a Cu(10 at.% Mn) spin glass are reported. The relaxation of the magnetization is recorded after specific temperature variations of the sample in the spin-glass phase. The data are discussed within the framework of new domain theories of the spin-glass phase. A qualitative agreement between the theoretical predictions and the experimental results is found. Specifically, empirical support for the theoretical concept overlap length is given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.342299
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  • 4
    Digitale Medien
    Digitale Medien
    A comparison between arc drops in ignited thermionic converters with and without ion reflections at the emitter (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 58 (1985), S. 142-145 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The output performance of two thermionic energy converters is compared. One converter has a normal emitter, working with zero field at the emitter which is close to the optimum working point, and the other has a low work function emitter and ion reflection at the emitter. A simple model of the plasma and the sheaths shows that a converter working with a low work function emitter and ion reflections gives a worse performance than a similar converter with a normal emitter.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.335699
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  • 5
    Digitale Medien
    Digitale Medien
    Towards equilibrium in spin glasses (invited) (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3371-3376 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: New nonequilibrium features of the magnetic susceptibility of spin glasses are reviewed. Experimental observations on the time variation of the zero-field-cooled (ZFC) and field-cooled (FC) susceptibilities indicate that the same equilibrium value is obtained after the same characteristic time teq(T). ZFC and ac susceptibility measurements on metallic spin glasses unambiguously reveal the existence of aging of the zero-field spin-glass state. The possibility to probe the aging process from these measurements is outlined. The aging of the zero-field state ends at the characteristic time teq(T) , where a spin-glass state at dynamic equilibrium is retained.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.335101
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  • 6
    Digitale Medien
    Digitale Medien
    A benthic sled for sampling soft bottoms (1996)
    Springer
    Helgoland marine research 50 (1996), S. 453-456 
    Details
    ISSN: 1438-3888
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A new benthic sled is described.Favourable features of the sled include: simple operation, broad runners, balanced towing position, simple height adjustment of the sediment cutting edge and quick exchange of the collecting bag. Metallic parts are aluminium, making the sled light (15 kg). This sled has functioned well in coastal research for more than a decade.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02367160
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