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  • 1
    Electronic Resource
    Electronic Resource
    Intramolecular multiple scattering in electron diffraction from fluoro-methyl halides (1994)
    Springer
    The European physical journal 30 (1994), S. 183-187 
    Details
    ISSN: 1434-6079
    Keywords: 34.80.Bm ; 35.20.Bm ; 35.20.Dp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Relative elastic differential cross sections for scattering of 1 keV electrons from CF3H, CF4, CF3Cl, CH3F and CH3Cl molecules were measured for momentum transfer from 3 Å−1 to 29 Å−1. The oscillatory residuals remaining after substraction of the atomic scattering and the molecular interference contributions calculated in the independent atom model are ascribed to the influence of intramolecular multiple scattering. The data reflect the dominant contributions of the CF3-group and show larger oscillations than obtained from triple scattering calculations according to the method of Liu and Bonham using the second Born approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426070
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Electron diffraction from oriented molecules:e—CH3Cl (1994)
    Springer
    The European physical journal 30 (1994), S. 177-182 
    Details
    ISSN: 1434-6079
    Keywords: 34.80.Bm ; 35.20.Dp ; 35.80.+s
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The additional molecular interference contributions to the differential elastic electron scattering cross sections for spatially oriented and partially state-selected CH3Cl molecules have been measured at an incident energy of 1 keV. Using the electrostatic hexapole technique, the molecules were oriented with their axes preferentially parallel or antiparallel to the electron beam. Deviations from the diffraction pattern of unoriented molecules of up to 4% were observed as a function of momentum transfer. A change of the orientational distribution in the state ensemble gave rise to a significantly altered interference pattern with alignment contributions dominating in both cases. For comparison with the data the fractional population of the various states present in the molecular beam was calculated and the independent atom model was applied to obtain the scattering pattern using the formalism of Kohl and Shipsey.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426069
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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