Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2018 Impact factor 0.961

Nuclear Science and Techniques ›› 2004, Vol. 15 ›› Issue (2): 89

• NUCLEAR, HEAVY ION AND ATOMIC PHYSICS • Previous Articles     Next Articles

Evaluation of influence of surface barrier in solid on ion reflection by bipartition model of ion transport

YANG Dai-Lun, WU Zhang-Wen   

  1. Key Lab for Radiation Physics and Technology of the Education Ministry of China,Institute of Nuclear Science and Technology,
    Sichuan University, Chengdu 610064
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YANG Dai-Lun, WU Zhang-Wen. Evaluation of influence of surface barrier in solid on ion reflection by bipartition model of ion transport.Nuclear Science and Techniques, 2004, 15(2): 89

Abstract: The influence of surface barrier of solid upon ion reflection was studied in a few papers of other authors by using the Monte-Carlo simulation. Based on the bipartition model of ion transport, a new analytical theory has been developed instead of the MC simulation, due to important implication of the effect for fusion research. In the present paper we have calculated the number reflection coefficients of H+, D+, He and T+ normally incident on C, Al and Cu for ion energy from several eV to one hundred keV respectively. Our computational results accorded with the MC simulation. The results have shown that the effect of surface barrier on ion reflection becomes evident when the energy of incident ions is lower than one keV. In particular, for the ion energy from several eV to one hundred eV, the discrepancies of number reflection coefficients can increase up to 0.1~0.3, showing this influence to be very important.

Key words: Ion reflection, Number reflection coefficient, Surface barrier