アルミナ材料の二次電子放出とカソードルミネセンスに及ぼすアニールとX線照射の影響 Influences of Thermal Annealing and X-ray Irradiation on Secondary Electron Emission and Cathodoluminescence Spectra of Alumina Materials

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Rf-windows are used at the output portion of the klystrons to isolate vacuum and transmit the rf-power. Surface flashover of alumina ceramics limits the transmission power of microwaves. The surface flashover depends not only on the high secondary electron emission coefficients, but also on electronic states of oxygen vacancies existing adjacent to the ceramic surface. Secondary electron emission (SEE) coefficients and cathodoluminescence (CL) measurements were performed on alumina ceramics after annealing or x-ray irradiation. The experimental results revealed that (1) SEE coefficients increased and the intensity of CL-spectra corresponding to F<SUP>+</SUP>-center, which is one of oxygen vacancy states, decreased after annealing, and (2) the intensity of CL-spectra corresponding to F<SUP>+</SUP>-center decreased after x-ray irradiation.

収録刊行物

  • 真空  

    真空 42(9), 834-839, 1999-09-20 

    The Vacuum Society of Japan

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各種コード

  • NII論文ID(NAID)
    10004568456
  • NII書誌ID(NCID)
    AN00119871
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05598516
  • NDL 記事登録ID
    4872307
  • NDL 雑誌分類
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL 請求記号
    Z16-474
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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