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Development of a miniaturized duoplasmatron ion source.

Tatsuya Kuzumi1, Motoi Wada1

  • 1Graduate School of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan.

The Review of Scientific Instruments
|February 5, 2020
PubMed
Summary

A compact duoplasmatron ion source was developed for versatile applications. Its performance was validated, demonstrating a 1 µA ion beam current at 5 mA discharge current, suitable for various scientific instruments.

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Area of Science:

  • Physics
  • Engineering
  • Materials Science

Background:

  • Miniature ion sources are crucial for compact scientific instruments.
  • Duoplasmatron sources offer high ion current densities.
  • Integration with standard flanges simplifies experimental setups.

Purpose of the Study:

  • To design and test a miniature duoplasmatron ion source.
  • To evaluate its performance characteristics.
  • To assess its compatibility with standard laboratory equipment.

Main Methods:

  • A duoplasmatron ion source was designed for a 34 mm copper gasket flange.
  • A hollow cathode facilitated a stable discharge with <10 W power for Argon.
  • Ion beam current was measured using a Faraday cup 200 mm downstream.

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Main Results:

  • A stable discharge was achieved with low power consumption.
  • Maximum ion beam current of 1 µA was obtained at 5 mA discharge current (390 V discharge, 2 kV extraction).
  • Higher discharge voltages were needed for hydrogen gas operation.

Conclusions:

  • The designed miniature duoplasmatron ion source is functional and compact.
  • It achieves significant ion beam current suitable for various applications.
  • The source demonstrates adaptability to different gases, with hydrogen requiring adjusted parameters.