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Luminescence and characteristics of electron-holeplasma created in wide-band-gap crystals by ion irradiation.

Research Project

Project/Area Number 11440127
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

KIMURA Kazuie  RIKEN, Senior scientist, ビーム分配技術開発室, 先任研究員 (40087614)

Co-Investigator(Kenkyū-buntansha) 岡崎 清比古  理化学研究所, ビーム物理工学, 先任研究員 (70260198)
熊谷 秀和  理化学研究所, リニアック, 副主任技師
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2000: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsElectron-hole plasma / ionic ceystal / metal oxide / 100 ps lived / single photon single ion / time-resolved spectrum / high-dencity excitation / ion irradiaytion / 電子-空孔プラズマ
Research Abstract

We are interested in high-density excitation by heavy ions, which is the highest exclitation in the present methods. In case of excitation of insulators with wide band-gaps, the intensity of excitation density by heavy ibns is three ofders higher thap tera W laser. In order to search phenomena characteristic to ion irradiation and elucidate dynamics of ion-tracks at initial stages. we developed a single ion and single photon (SISP) coincidence techaiques. At present, the time resolution is about, 85 ps, which is the fastest tool and is. better at least by order than usual techniques for ions. By application of SISP, we found ultra-fast luminescence commonly for many insulator crystals. Such lumjnescence has been not oberved and cannot be explained by so-far understanding. We proposed electron-hole plasma as origin of the fast luminescence with showimg evidences : non-tailed fast decay, super-linear excitation-density dependence of yield, sampl e dependence of yield, and little influence of temperaturle. However, there must be yet many unknown chaiacteristics regaiding with. e-h plasma in insulators, considering that e-h plasma in insulators is the frst finding and at starting point. Ih addition, so far our tirne-resolved spectra were apt to be influenced by beam fluctuation In order to overcome this week point and obtain precise spectra, we planed to construct simultaneous 8-wavelengths SISP and nbw this system is ready to measurements. However, the ion accelerator is in reconstruction since the last April. We are waiting the operation ofthe accelerator.

Report

(3 results)
  • 2001 Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] K.Kimura, et al.: "Fast electron-hole plasma luminescence from track-cores in heavy-ion irradiated wide-band-gap crystals"Nucl. Instrm. Methods Phys. Res. in pres. B.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Kimura.et al.: "Novel ultra-fast luminescence from incident ion tracks of insulator crystals : electron-hole plasma formation in the track core"Rad. Meas.. 324. 99-103 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Kimura, et al.: "Stimulated emission and exciton complex in some insulator crystals irradiated by heavy ions"Nucl. Instrm. Methods Phys. Res.. B,154. 318-324 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Kimura, et al.: "Stimulated emission at 326 nm and an ultrafast 100 ps-lived luminescence component by ion irradiation"Pys. Rev.. B60. 12626-12634 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Kimura, et al: "Fast electron-hole plasma luminescence fromtrack-cores in heavy-ion irradiated wide-band-gap crystals"Nucl. Instrm. Meth. Phys. Res. B. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Kimura, et al: "Novel ultra-fast luminescence from incident ion tracks of insulator crystals : electron-hole plasma formation in the track core"Rad. Meas.. 324. 99 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Kimura, et al: "Stimulated emissionat 326 nm and an ultrafast 100ps lived luminescence component in ion irradiation of alumina"Phys. Rev. B. 60. 12626-12634 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 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. 154. 318-324 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Kimura, et al.: "Novel ultra-fast luminescence from incipient ion tracks of insulator crystals : Electron hole plasma formation in the track core"Nucl.Instrm.Meth.Phys.Res.B. (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Kimura, et al: "Stimulated emission at 326 nm and an ultrafast 100ps-lived luminescence Component in ion irradiation of alumina"Phys.Rev.B. 60. 12626-12634 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Kimura, et al: "Stimulated emission and exciton complex in some insulator crystals irradiated by heavy ions."Nucl.Instrm.Meth.Phys.Res.B. 154. 318-324 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Kimura et al.: "A new 100 ps-lived luminescence component and stimulated emission at 326 nm"Phys.Rev.B. 60. 12626-12634 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Kimura et al.: "Stimulated emission and exciton complex in some insulator"Nucl.Instrm.Meth.B. 154. -324 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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