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2001 Fiscal Year Final Research Report Summary

Development of High-Rep-Rate Ion Induced Secondary Emission Electron Gun and Its Application

Research Project

Project/Area Number 10555088
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 電力工学・電気機器工学
Research InstitutionTokyo Institute of Technology

Principal Investigator

HOTTA Eiki  Tokyo Institute of Technology, Interdisciplinary Graduate School of Science and Engineering, Professor, 大学院・総合理工学研究科, 教授 (70114890)

Project Period (FY) 1998 – 2000
KeywordsWire Ion Plasma Source / Ion Bombardment / Secondary Electron / Electron Gun / Electron Beam
Research Abstract

A secondary emission electron gun applicable to a gas treatment was designed, fabricated and tested.
The gun is set beside an ion source, which is called a wire ion plasma source (WIPS). In the gun, ions extracted from the WIPS are accelerated toward a cathode surface, which is set oblique to the ion loci. By collision of ions, secondary electrons emitted from the cathode surface are then accelerated toward the electron window and form a very wide electron beam. The electron window, which is between the electron gun and a gas treatment chamber, is set orthogonal to the ion extraction window and is on earth potential. In order to design a structure of cathode, which can inject the electron beam perpendicular to the electron window, the ion and the electron trajectories were numerically simulated for several conditions. The characteristic of the electron gun has been subsequently evaluated in terms of ion and electron beam currents at the accelerating voltage up to 100 kV.
A 15 μm thick aluminum foil supported by a honeycomb board is placed at the electron window as a vacuum seal between the electron gun and the gas treatment chamber. The electron beam current distribution inside the gas treatment chamber has been evaluated in a vacuum condition. A uniform electron beam has been detected inside the gas treatment chamber. A relatively large cross section (64.5 cm^2) electron beam with a current density of about 15 mA/cm^2 is available for the gas treatment. It is expected that such current density level will offer an efficient NO_X treatment.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] P.R.Chalise, M.Ishikawa, M.Watanabe, A.Okino, K-C.Ko, E.Hotta: "Side Extraction Type Secondary Emission Electron Gun Using Wire Ion Plasma Source"Proc. 13th Int. Conf. on High-Power Particle Beams. 1. 86-89 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] P.R.Chalise, M.Watanabe, A.Okino, E.Hotta: "Study on Ion Induced Secondary Emission Electron Gun"Research Report NTFS-Proc Series. (in Press).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] P.R.Chalise, M.Watanabe, A.Okino, K-C.Ko, E.Hotta: "Characteristics of Ion Induced Secondary Emission Electron Gun"Proc. 14th Int. Conf. on High-Power Particle Beams. (in Press).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] P.R.Chalise, M.Ishikawa, M.Watanabe, A.Okino, K-C.Ko and E.Hotta: "SIDE EXTRACTION TYPE SECONDARY EMISSION ELECTRON GUN USING WIRE ION PLASMA SOURCE"Proceedings of 13^<th> International Conference on High-Power Particle Beams. Vol.1. 86-89 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] P.R.Chalise, M.Watanabe, A.Okino and E.Hotta: "Study on Ion Induced Secondary Emission Electron Gun"Research Report NIFS-Proc Series. (in Press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] P.R.Chalise, M.Watanabe, A.Okino, K-C.Ko and E.Hotta: "Characteristics of Ion Induced Secondary Emission Electron Gun"Proceedings of 14^<th> International Conference on High-Power Particle Beams. (in Press). (2002)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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