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  • 71.20  (2)
  • 73.20.At  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Deconvolution of appearance potential spectra II (1979)
    Springer
    Applied physics 20 (1979), S. 299-303 
    Details
    ISSN: 1432-0630
    Keywords: 71.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have recently introduced a new method for the inversion of autoconvolution integrals [1]. In this paper, we describe an improvement of the previous algorithm which results from the consequent use of cubical spline functions. The treatment given here is mathematically more consistent and offers better numerical stability than that given earlier. The method is applied to the deconvolution of the rather narrow NiL III appearance potential line. Problems of stability and error propagation are discussed in some detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895000
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Quantization of electronic states on metal surfaces (1994)
    Springer
    Applied physics 59 (1994), S. 479-486 
    Details
    ISSN: 1432-0630
    Keywords: 73.20.At ; 73.20.Dx ; 79.60.Dp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract An electron in front of a metal surface experiences an attractive force due to the induced image charge. Band gaps in the band structure can prevent a penetration into the metal along certain directions. The Coulomb-like potential supports bound states in front of the surface which correspond to a hydrogen atom in one dimension. These image states can be measured with high resolution by two-photon photoemission. The adsorption of metals modifies the states. If the electrons can penetrate into the metal, quantum-well states can develop corresponding to standing waves in the overlayer. Image states on small islands show the quantization effects due to the lateral localization. The spectroscopy of image states by two-photon photoemission permits the investigation of growth and morphology of deposited metal layers, a well as the illustration of fundamental quantum-mechanical effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348266
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  • 3
    Electronic Resource
    Electronic Resource
    Isochromat spectroscopy using SXAPS equipment (1979)
    Springer
    Applied physics 20 (1979), S. 37-40 
    Details
    ISSN: 1432-0630
    Keywords: 71.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Any conventional soft x-ray appearance potential spectrometer may be converted to an isochromat spectrometer by placing an absorber foil of suitably chosen thickness in front of the x-ray detector. In the present work, we demonstrate the principle and work out in detail the properties of an aluminum absorption foil. Isochromats of a hafnium sample are compared to results obtained with a crystal x-ray spectrometer. Also, the equivalence of an isochromat and an SXAPS measurement at the same energy will be shown. The densities of unoccupied states as derived from the respective experiments are in pretty good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901784
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  • 4
    Electronic Resource
    Electronic Resource
    Calculation of surface states using a one-dimensional scattering model (1994)
    Springer
    Applied physics 59 (1994), S. 639-643 
    Details
    ISSN: 1432-0630
    Keywords: 73.20.At ; 68.35.Fx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The complex electronic band structure of a one-dimensional solid is described using a one-dimensional scattering approach. The method yields the value of the wave function and its derivative between the atomic layers. These values can be matched at the surface to the corresponding values of the wave function on the vacuum side. The method is compared to the two-band approximation of the nearly free electron model. Advantages of the proposed scheme are the easy adaption for layered systems and alloys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331925
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