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  • 1
    Electronic Resource
    Electronic Resource
    Absolute concentrations of light impurity ions in tokamak discharges measured with lithium-beam-activated charge-exchange spectroscopy (1991)
    Springer
    Applied physics 52 (1991), S. 71-78 
    Details
    ISSN: 1432-0649
    Keywords: 52.70 ; 52.40M ; 34.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We demonstrate the application of Li-CXS (fast lithium-beam-activated charge exchange spectroscopy) for measuring spatially and temporally resolved impurity ion concentrations in the TEXTOR tokamak edge plasma. After briefly describing the method of Li-CXS and its capabilities, we present a model for attenuation and atomic state population of an injected Li beam due to collisional interactions with the background plasma particles, taking into account up to eight excited LiI states for considering stepwise excitation-ionization processes. Measured impurity radiation characteristics resulting from Li-activated CX of C q+ (q=5, 6) in ohmically heated TEXTOR plasmas are evaluated with the above model and lead to the corresponding impurity ion concentrations within the TEXTOR edge region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357658
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Electron capture and target excitation in slow ion-alkali atom collisions (1987)
    Springer
    The European physical journal 6 (1987), S. 145-153 
    Details
    ISSN: 1434-6079
    Keywords: 34.70 ; 34.50 H
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Experimental cross sections for single electron capture and target atom resonance line emission in impact of singly charged ions (He+, Ne+, Ar+, C+, N+, O+) on respectively Li(2s) and Na(3s) are presented and compared with semiempirical calculations of the Demkov-Olson type. It is shown that such calculations can still be useful despite involvement of metastable primary ion admixtures and several final states. In addition, observed undulations in the impact energy dependence of electron capture — and target excitation cross sections are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01384601
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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