Compact Metal Ion Beam Source Using Thermal Contact Ionizer

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Bibliographic Information

Other Title
  • 熱接触電離を利用した小型金属イオンビーム源
  • ネツ セッショク デンリ オ リヨウシタ コガタ キンゾク イオン ビームゲン

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Description

A small and compact ion beam source has been developed for a heavy ion beam probe as a plasma diagnostic technique. The source consists of a thermal contact ionizer with a beam material reservoir, and an electrostatic accelerating lens system. The beam modulation is possible by means of a beam extracting electrode. An alkali or an alkali earth metal ion beam was produced at an energy up to 3 keV. The sourcefunctioned sufficiently in a magnetic field up to 2 kG. Especially, operating parameters for Cs+ and Ba+ ion beams were investigated in detail. A beam Current up to 10μ A and a diameter of 1 mm at a focussing point were easily obtained. A method is also presented to compensate both the beam current reduction and the beam profile distortion which were observed in the operation in a stronger magnetic field above 2 kG.

Journal

  • Kakuyūgō kenkyū

    Kakuyūgō kenkyū 47 (3), 257-278, 1982

    The Japan Society of Plasma Science and Nuclear Fusion Research

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