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Solid-gas effect inK-vacancy production in near symmetric slow heavy-ion-atom collisions

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Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

We have measured the target thickness dependence ofK-vacancy production probabilities and total cross sections for 40.6 MeV Ar ions hitting Ca and Cu targets. The probabilities were measured as a function of the scattering angle between 0.13° and 1.4° by means of aK x-ray-particle coincidence. By integrating the measured probabilities over the impact parameter a significantly lower total cross section was obtained than the directly measured value. The maximum seen in the impact parameter dependent probability varies with decreasing target thickness towards the results obtained with molecular and atomic gas targets. From these observations a multiple collisionL-vacancy process prior to 2pπ-2pσ rational coupling is concluded.

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Author notes

  1. R. Schuch

    Present address: Manne-Siegbahn Institute of Physics, S-10405, Stockholm, Sweden

  2. T. Mizogawa

    Present address: Nagaoka College of Technology, 940, Nagoaka, Niigata, Japan

  3. H. Shibata

    Present address: Research Center of Nuclear Science and Technology, University of Tokyo, 319-11, Tokai, Ibaraki, Japan

Authors and Affiliations

  1. The Institute of Physical and Chemical Research (RIKEN), 351-01, Wako, Saitama, Japan

    T. Kambara, R. Schuch, Y. Awaya, T. Mizogawa, H. Kumagai, Y. Kanai & H. Shibata

  2. Tandem Accelerator Center, University, 305, Tsukuba, Japan

    K. Shima

Authors
  1. T. Kambara
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  2. R. Schuch
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  3. Y. Awaya
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  4. T. Mizogawa
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  5. H. Kumagai
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  6. Y. Kanai
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  7. H. Shibata
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  8. K. Shima
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Kambara, T., Schuch, R., Awaya, Y. et al. Solid-gas effect inK-vacancy production in near symmetric slow heavy-ion-atom collisions. Z Phys D - Atoms, Molecules and Clusters 22, 451–456 (1992). https://doi.org/10.1007/BF01426086

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  • DOI: https://doi.org/10.1007/BF01426086

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