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  • 1
    Electronic Resource
    Electronic Resource
    Resonant photoemission in highly localized versus weakly localized solids (1994)
    Springer
    The European physical journal 94 (1994), S. 1-2 
    Details
    ISSN: 1434-6036
    Keywords: 79.60.Cn ; 78.70.Dm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on comparative study of angle-resolved photoelectron spectra of Ni metal and CeGd at theM III andN IV,V soft-x-ray absorption threshold, respectively. OnM III resonance, the valence-band photoemission (PE) intensity of Ni follows a cos2-behavior, while the intensity of the 6-eV satellite is independent of the angle of emission relative to the E-vector of the incoming beam. On the other hand, the 4f Ce PE signal behaves ∝ cos2 onN IV,V resonance. This clearly shows that the resonant enhancement of the 6-eV PE satellite of Ni is mainly caused by an incoherent Auger decay and cannot be described as a resonant PE process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01307645
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Laser-surface-alloying of the iron based superalloy Incoloy-800H with Al (1996)
    Springer
    Applied physics 63 (1996), S. 461-465 
    Details
    ISSN: 1432-0630
    Keywords: 81.65 ; 42.70.H ; 81.05.Bx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Laser surface alloying by the powder feed method of the iron based superalloy Incoloy 800H with aluminium has been carried out. The effects of different preparation parameters, like laser scan speed and powder feed rate, on the morphology of the alloyed zone have been investigated. Microstructure and composition have been determined by scanning electron microscopy (SEM), optical microscopy, and x-ray fluorescence spectroscopy. Three different phases with different Al-content have been distinguished. The observed Al-enrichment at the surface, the presence of Ni-Al and Fe-Al intermetallic compounds, and the considerable grain refining of the alloyed zone with respect to the substrate, make this surface modification technique a very good method to improve the corrosion behaviour of the Incoloy 800H super-alloy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01571674
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Resonant photoemission study ofK-derived valence-band states in K X C60 (1993)
    Springer
    The European physical journal 92 (1993), S. 347-351 
    Details
    ISSN: 1434-6036
    Keywords: 36.40.+d ; 74.75.+t ; 79.60.−i
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The electronic structure of K-doped C60 was investigated by photoemission (PE) and X-ray absorption near-edge structure (XANES) studies at the C-1s and K-2p thresholds. In addition, information on the local K-derived partial density of states in superconducting K3C60 was obtained by resonant PE at the K-2p 1/2 threshold. The experimental observations support a complete charge transfer from K to C60 and we clearly observe a finite density of states atE F . From resonant PE, occupied states with K-p, d character could be identified in the binding-energy region from 1.5 to 8 eV below, but not directly at the Fermi level. This partial-density-of-states structure agrees well with the results of our band-structure calculations based on the local-density approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01308753
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    Paper (German National Licenses)
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