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Rydberg electron transfer to C60 and C70

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Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

Experimental results are reported for the attachment of Ar* * (nl) Rydberg electrons to C60 and C70 over the range n = 19–270. In agreement with other Rydberg work we find that the rate coefficient for C −60 formation remains large (around 2·10-8 cm3 s-1) towards high n and is essentially constant for n > 40, thereby indicating the presence of an s-wave attachment process in contrast to interpretations of free electron attachment data postulating p-wave threshold behaviour. The rate coefficients for C −70 formation show a similar n-dependence as those for C −60 , but they are significantly larger. Possible mechanisms for s-wave attachment including formation of polarization-bound negative ion states are discussed. Regarding the threshold behaviour for the attachment of free electrons to C60 we propose — based on an analysis of available free electron data — the presence of an s-wave (possibly resonance type) contribution near zero energy.

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Authors and Affiliations

  1. Fachbereich Physik, Universität Kaiserslautern, Erwin-Schrödinger-Strasse, D-67653, Kaiserslautern, Germany

    J.M. Weber, M.-W. Ruf & H. Hotop

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  1. J.M. Weber
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  2. M.-W. Ruf
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  3. H. Hotop
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Weber, J., Ruf, MW. & Hotop, H. Rydberg electron transfer to C60 and C70 . Z Phys D - Atoms, Molecules and Clusters 37, 351–357 (1996). https://doi.org/10.1007/s004600050051

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  • DOI: https://doi.org/10.1007/s004600050051

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