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Quenching cross sections for alkali-inert gas collisions

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The cross sections for quenching the lowestn 2 P states of the alkali atoms Li, Na, K., and Rb by the inert gases He, Ne, Ar, Kr, and Xe are presented for 5 eV≦E c.m.≦ 100 eV. These cross sections are derived from the corresponding cross sections for collisional excitation by applying the principle of microreversibility. Upper estimates for the quenching cross sections at thermal energies are given; in all studied cases the quenching cross sections are <8·10−3Å2. These new upper limits are in most cases much lower than those obtained from other methods previously.

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Authors and Affiliations

  1. Fakultät für Physik der Universität Freiburg, Freiburg i. Br., Germany

    E. Speller, B. Staudenmayer & V. Kempter

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  1. E. Speller
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  2. B. Staudenmayer
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  3. V. Kempter
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Additional information

Support of this work came from the Deutsche Forschungsgemeinschaft. We thank H.J. Dreher and W. Gussmann for the design of the Li-beam source and the bolometer detector, respectively. We also appreciate the advice of Dr. W. Mecklenbrauck in the early stages of this work. We thank the authors of Ref. 23 for communicating us their results prior to publication. We also wish to thank Dr. M. Elbel and Dr. E.E. Nikitin for valuable comments.

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Speller, E., Staudenmayer, B. & Kempter, V. Quenching cross sections for alkali-inert gas collisions. Z Physik A 291, 311–318 (1979). https://doi.org/10.1007/BF01408379

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  • DOI: https://doi.org/10.1007/BF01408379

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