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    Coherence Parameter Measurements for Electrons Scattering off Heavy Noble Gas Targets


    Corr, J.J. and van der Burgt, Peter J.M. and Plessis, P. and Khakoo, M.A. and Hammond, P. and McConkey, J.W. (1991) Coherence Parameter Measurements for Electrons Scattering off Heavy Noble Gas Targets. Journal of Physics B: Atomic, Molecular and Optical Physics, 24 (5). pp. 1069-1085. ISSN 0953-4075

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    Abstract

    Electron impact excitation of the resonance levels of Ne, Ar, Kr and Xe has been studied for electron scattering angles up to 50' and impact energies between 30 and 80 eV. The P1 and P4 Stokes parameters have been measured in each case so that the influence of spin in the excitation process could be studied through evaluation of rho 00, the relative spin-flip cross section. After careful account was taken of various depolarizing effects due particularly to the finite volume of the interaction region and, in the cases of Kr and Xe, to nuclear spin, very good agreement has been found with theoretical predictions thus resolving a previously reported discrepancy. No evidence has been found for spin-flip under the experimental parameters used in this study, even for the heaviest target studied.

    Item Type: Article
    Keywords: Electron impact excitation; Coherence Parameter Measurements; Electrons scattering angles; Heavy Noble Gas Targets;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 9812
    Identification Number: https://doi.org/10.1088/0953-4075/24/5/027
    Depositing User: Dr Peter van der Burgt
    Date Deposited: 22 Aug 2018 15:54
    Journal or Publication Title: Journal of Physics B: Atomic, Molecular and Optical Physics
    Publisher: IOP Publishing
    Refereed: Yes
    URI:

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