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  • 1
    ISSN: 1432-2234
    Keywords: Functional sensitivity densities ; Nonadiabatic collisions ; Diabatic potential energy curves
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The functional sensitivity densities δ ln σ12(E)/δ lnV ii (R) for He++Ne(2p 6)→He++Ne(2p 53s) reveal that the collisional excitation cross section σ12(E) is insensitive to the additional diabatic curveV 33 included in some models. The negligible sensitivity of σ12(E) toV 33 offers a quantitative validation of the more popular two state model for collisional excitation of Ne by He+. The sensitivity profiles for the collisional ionization Li+I→Li++I− modeled by crossing diabatic curvesV 11 (covalent) andV 22 (ionic) shows that the ionization cross section does not depend on inner crossings even when these stem from large distortions in the underlying potential energy curves. The lack of sensitivity to inner crossings establishes the predominant role of the outermost crossing in triggering nonadiabatic transitions.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0040-5744
    Keywords: Key words: Functional sensitivity densities ; Nonadiabatic collisions ; Diabatic potential energy curves
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary.  The functional sensitivity densities δ ln σ12(E)/δ ln V ii (R) for He++Ne(2p 6)→He++Ne(2p 53s) reveal that the collisional excitation cross section σ12(E) is insensitive to the additional diabatic curve V 33 included in some models. The negligi ble sensitivity of σ12(E) to V 33 offers a quantitative validation of the more popular two state model for collisional excitation of Ne by He+. The sensitivity profiles for the collisional ionization Li+I→Li++I- modeled by crossing diabatic curves V 11 (covalent) and V 22 (ionic) shows that the ionization cross section does not depend on inner crossings even when these stem from large disto rtions in the underlying potential energy curves. The lack of sensitivity to inner crossings establishes the predominant role of the outermost crossing in triggering nonadiabatic transitions.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
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