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On the redistribution of6Li + ions implanted into polypropylene foils

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Abstract

6Li+ (150 keV) was implanted into thin polypropylene foils at fluences of 1 x 1013 to 1 x 1014 cm−2. Subsequent neutron depth profiling measurements of the Li distributions revealed considerable deviations from the expected ballistic range profiles. This Li redistribution was simulated by a numerical computer calculation. The best fit between measurements and simulations was obtained by assuming that (i) Li redistributes immediately after its ballistic slowing-down, (ii) the Li mobility is enhanced in the radiation-damaged polymer region, the local diffusion enhancement being controlled by the target's electronic damage, (iii) mobile Li is readily trapped at radiation-induced defects, their density being proportional to the target's electronic damage, (iv) these traps are saturable ones, and (v) Li migration is not restricted to the ion track region, but proceeds also through the neighboring unirradiated bulk, though with slower speed.

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Authors and Affiliations

  1. Hahn- Meitner-Institut, Glienicker Strasse 100, D-14109, Berlin, Germany

    D. Fink & R. Klette

  2. Instituto de Fisica, Universidade Federal do Rio Grande do Sul, Campus do Vale, 91500, Porto Alegre, RS, Brazil

    M. Behar & J. Kaschny

  3. CSIRO, Research School of Physical Sciences and Engineering, Institute of Advanced Studies, Australian National University, GPO Box 4, 2601, Canberra, ACT, Australia

    L. T. Chadderton

  4. Nuclear Physics Institute, Czech Academy of Sciences, CZ-25068, Řež, Czech Republic

    V. Hnatowicz & J. Vacik

  5. Gesellschaft für Schwerionenforschung, Planckstrasse 1, D-64291, Darmstadt, Germany

    L. Wang

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  1. D. Fink
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  6. V. Hnatowicz
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  8. L. Wang
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Fink, D., Behar, M., Kaschny, J. et al. On the redistribution of6Li + ions implanted into polypropylene foils. Appl. Phys. A 62, 359–367 (1996). https://doi.org/10.1007/BF01594234

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  • DOI: https://doi.org/10.1007/BF01594234

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