高分解能電子エネルギー損失分光におけるプローブ分散領域の運動学的解析  [in Japanese] Kinematic Analysis of a Dispersion Region Probed in High-Resolution Electron Energy-Loss Spectroscopy  [in Japanese]

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Author(s)

    • 稲岡 毅 INAOKA Takeshi
    • 岩手大学工学部材料物性工学科 Department of Materials Science and Technology, Faculty of Engineering, Iwate University

Abstract

High-resolution electron energy-loss spectroscopy (HREELS) is a powerful tool for observing an energy dispersion of low-energy surface excitation modes. In the specular-reflection geometry (SRG), a probed dispersion region determined kinematically depends upon the incident angle θ<SUB>0</SUB> and the incident energy <I>E</I><SUB>0</SUB>, while, in the off-specular geometry (OSG) it depends upon θ<SUB>0</SUB> and a scattered angle θ<SUB>S</SUB> adjusted by the analyzer position. With change in θ<SUB>0</SUB> and <I>E</I><SUB>0</SUB> in the SRG and with change in θ<SUB>0</SUB> and θ<SUB>S</SUB> in the OSG, we make a kinematic analysis of the probed dispersion region with special attention to its width. Our analysis shows that, with a grazing angle θ<SUB>0</SUB> fixed and with <I>E</I><SUB>0</SUB> or θ<SUB>S</SUB> varied, we can scan a sharply narrowed probed region on a wave number-angular frequency (<I>Q</I>-ω) plane to make an accurate observation of the energy dispersion of surface-excitation modes. An incident electron undergoes an image force, when it incidents on a surface of dielectric material. However, the image force is found to exert no substantial influence on the probed region even at grazing incidence.

Journal

  • Shinku

    Shinku 45(3), 200-203, 2002-03-20

    The Vacuum Society of Japan

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Codes

  • NII Article ID (NAID)
    10008202936
  • NII NACSIS-CAT ID (NCID)
    AN00119871
  • Text Lang
    JPN
  • Article Type
    SHO
  • ISSN
    05598516
  • NDL Article ID
    6144272
  • NDL Source Classification
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL Call No.
    Z16-474
  • Data Source
    CJP  NDL  J-STAGE 
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