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  • 1
    Electronic Resource
    Electronic Resource
    Prebreakdown characteristics of thin film-coated molybdenum electrodes (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 6184-6186 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of thin molybdenum films on molybdenum cathodes on the prebreakdown current between molybdenum electrodes in high vacuum has been studied. Films of four thicknesses: 10, 30, 100, and 300 A(ring) were used and the Fowler–Nordheim plots were made to determine the field enhancement factor β and the electron emission area a. Maximum reduction of the prebreakdown current by a factor of 3000 was observed. The reduction in the current is a result of a decrease of both the field enhancement factor and the electron emission area of the cathode.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343555
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  • 2
    Electronic Resource
    Electronic Resource
    Development of a miniaturized, light-weight magnetic sector for a field-portable mass spectrograph (1991)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 2618-2620 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have designed and fabricated a miniaturized, light-weight magnetic sector for a focal plane mass spectrograph (Mattauch–Herzog design) by using a new high-energy-product magnet material (Nd-B-Fe alloy), and a high permeability magnet yoke material (V-Co-Fe alloy). The magnetic sector weighs less than 10 kg and has a focal plane of 5.1 cm in length and covers a nominal mass range of 40–240 amu. Such a magnetic sector in conjunction with an array detector and a short microbore capillary column is eminently suited for the development of a field-portable gas chromatograph-mass spectrometer instrument of high performance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142240
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  • 3
    Electronic Resource
    Electronic Resource
    Electromagnetic wave propagation in a planar helix with a metal shield (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 4480-4481 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Dispersion properties of the electromagnetic (em) waves propagating through a planar helix are investigated. A dispersion relation is obtained which includes influence of the outer metal shield on the em wave propagation. It is shown that the phase velocity of em waves reduces as the metal shield is brought closer to the planar helix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.334572
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