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Time-and space-resolved study on the effect of high-density excitation in ion tracks

Research Project

Project/Area Number 08640519
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 物理学一般
Research InstitutionThe Institute of Physical and Chemical Research (RIKEN)

Principal Investigator

KIMURA Kazuie  Cyclotron, The Institute of Physical and Chemical Research(Riken), senior Scientist, サイクロトロン研究室, 先任研究員 (40087614)

Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordselectron-hole plasma / high-density excitation / α-alumina / luminescence / heavy ions / track effect / decay / time-resolved spectrum / ワイドバンドギャッブ結晶 / イオン照射 / 電子-空孔プラズマ / 絶縁体中プラズマ / 極短寿命発光 / 時間分解発光スペクトル / LET依存発光 / 励起子コンプレクス / 緩和励起子 / 発光スペクトル / 誘導輻射 / 高密度励起効果 / 重イオン照射効果 / オージェフリー発光 / 高速decay測定 / 内殻励起子 / 緩和励起子の交換相互作用 / 単一イオン単一光子時間相関法 / 凝縮希ガスのブラック曲線
Research Abstract

Our technique for fast decay measurements-single ion and single photon coincidence(SISP) was further developed to obtain a resolution of 85 ps (the fastest of the similar equipment's reported for ion irradiation so far) and also to take a time-resolved spectrum. As for its application to different fields, a detector of the SISP was installed into a TOF system and a new impurity analysis system was developed. Our results ale as follows.
A new ultra-short lived luminescence band was found in ion irradiated alumina crystals, which has not been found by laser and pulsed electron irradiation. This band has a peak around 340 nm a broad band-width of 2eV, and a short lifetime of 100 ps. Further experiments elucidated that the new band could be observed in a many kind of crystals like oxides, alkali and alkali-earth halides. Considering characteristics shown by the results, the super-linear dependence on excitation density, the temperature independence, a ultra short lifetime, and a broad band, it may be concluded that the electron-hole plasmas or complexes composed of the electron-hole pair and other excited states are formed. We assigned this new band due to luminescence associated with the relaxation of the electron-hole plasma. This finding may open and lead the study for ion-irradiation effects into new development and also make it possible to study the effect of high-density excitation and the plasma of the wide band-gap crystals.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report

Research Products

(22 results)

All Other

All Publications

  • [Publications] K. Kimura et al: "A new 100 ps-lived luminescence component and stimulated emission at 326 nm in ion irradiated α-alumina"Phys. Rev. B. (to be published).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura, et al: "Stimulated emission and exciton complex in some insulator crystals irradiated by heavy ions""Nucl. Instrm. Meth. Phys. Res. B. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura, et al: "Decay enhancement of self-trapped excitons at high density and low temperature in an ion irradiated BaF2 single crystal""Phys. Rev.. B58. 6081-6089 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura, et al: "Extremely fast decay component of UV luminescence from 2-MeV/amu ion irradiated alumina"Nucl. Instrm. Meth.. B141. 425-430 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura, et al: "LET, ionic species, and temperature dependence on Auger-free and self-trapped exciton luminescence of ion-irradiated BaF2 and CsC1"ucl. Instrm. Meth.. B116. 57-60 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura,: "Decay of core excition and STE formed at high density in BaF2 and CsC1 single crystals""J. Elec. Spectro. Relate. Phenom. 79. 43-46 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K, Kimura, J, Kaneko, S. Sharma, W. Hong, and N. Itoh: "A new 100 ps-lived luntinescence component and stimulated emission at 326 um in ion irradiated α-alumiria"Phys. Rev. B. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura, J. Kaneko, S. Sharma, and N. Itoh: "Stimulated emission and exciton complex in some insulator crystals irradiated by heavy ions"Nucl Instrm. Meth. Phys. Res. B. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura and W. Hong: "Decay enhancement of self-trapped excitons at high density and low temperature in an ion irradiated BaF2 single crystal"Phys. Rev.. B58. 6081 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K Kimura. W Hong, J. Kaneko, and N, Itoh: "Extremely fast decay component of UV luminescence from 2 -MeV/amu ion irradiated aluntina"Nucl, Instrm. Meth.. B141. 425 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] W, Hong, S. Hayakawa, K. Maeda, S. Fukua, M. Yanokura, M. Aratani, K. Kimura. Y, Gohshi, and I. Tanihata: "Development of a high mass resolution TOF-ERDA system for a wide mass range from hydrogen to middle heavy elements"Anal. Sci.. 13. 365 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] W. Hong, S. Hayakawa, K. Maeda, S. Fukuda, M. Yanokura, M, Aratani, K Kimura. Y. Gohshi, and I, Tanihata: "Determination of the mass resolution and the depth resolution of time-of-flight elastic recoil detection analysis using heavy ion beams"Jpn. J, Appl. Phys.. 36. 5737 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] W. Hong, S. Hayakawa, K. Maeda, S. Fukuda, M. Yanokura, M. Aratani, K. Kimura, Y. Gohshi, and I. Tanihata: "Improvement in the detection limit of Elastic Recoil Detection Analysis(ERDA) using a time-of-flight detection"Jpn. J. Appl. Phys.. 36. L952 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Hong, S. Hayakawa, K. Maeda, S. Fukuda. M. Yanokura, M. Aratani, K. Kirnura, Y. Gohshi and I. Tanihata: "Development of a high mass resolution TOF-ERDA system for a wide mass range"Nucl. Instrm. Mett.. B124. 95 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K. Kimura: "TLET, ionic species, and temperature dependence on Auger-free and self-trapped exciton luminescence of ion-irradiated BaF2 and CsCl single crystals"Nucl. Instrm. Mett.. B116. 57 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K Kimura: "Decay of core exciton and STE formed at high density in BaF2 and CsCl single crystals"J, Elec. Spectro. Relate, Phenom.. 79. 43 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kimura, et al: "Stimulated emission and exciton complex in some insulator crystals irradiated by heavy ions" Nucl.Instrm.Meth.Phys.Res.B. 刷り上り7ページ,校正了 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kimura, et al: "Decay enhancement of self-trapped excitons at high density and low temperature in an ion irradiated baF2 single crystal" Phys.Rev.B58. 6081-6089 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kimura, et al: "Extremely fast decay component of UV luminescence from 2-Me V/amu ion irradiated alumina" Nucl.Instrm.Meth.Phys,Res.B141. 425-430 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kimura et al: "Extremely fast decay component of UV luminescence from 2-MeV/amu ion irradiated alumina" Nucl.Instrm.Meth.B. (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Kazuie Kimura: "LET-,ionic species-and temperature-dependence on Auger-free and self-trapped exciton luminescence of ion-irradiated BaF2 and CsCl single crystals" Nucl.Instrm.Meth.B116,57 (96). B116. 57-60 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kazuie Kimura: "Decay of core excitons and STE formed at high density in BaF2 and CsCl single crystals" J.Elec.Spectro.Relate.Phenom.79,43 (96). 79. 43-46 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-03-31   Modified: 2016-04-21  

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