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Related Experiment Video

Updated: Jun 3, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
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Improvement of four anode rods ion source.

F W Abdel Salam1, H el-Khabeary, M M Ahmed

  • 1Accelerators and Ion Sources Department, Nuclear Research Center, Atomic Energy Authority, P. No. 13759, Egypt.

The Review of Scientific Instruments
|April 5, 2011
PubMed
Summary

This study optimized a saddle field ion source, achieving stable discharge and maximum ion beam current at specific anode-cathode distances. Copper and aluminum sputter yields were also determined using argon ions.

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Area of Science:

  • Physics
  • Engineering

Background:

  • Saddle field ion sources are crucial for various applications requiring ion beams.
  • Optimizing their design is essential for enhancing performance and stability.

Purpose of the Study:

  • To design and construct an improved saddle field ion source.
  • To determine optimal operational parameters for stable discharge and maximum ion beam output.
  • To investigate the sputter yield of materials using argon ions.

Main Methods:

  • A novel saddle field ion source configuration with four copper anode rods and two copper cathode discs was designed and built.
  • Electrical discharge and ion beam characteristics were measured using argon gas at varying pressures.
  • Optimization of anode-cathode spacing was performed.

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  • Sputter yield experiments were conducted on copper and aluminum targets.

    • Main Results:

    • Optimal distances for stable discharge and maximum ion beam current were identified: 6 mm between anode rods and 16 mm between anode rods and cathode discs.
    • The effect of negative extraction voltage on ion beam current was analyzed.
    • Sputter yields for copper and aluminum were determined for different argon ion energies.

    Conclusions:

    • The improved saddle field ion source design allows for stable operation and enhanced ion beam current at optimized geometric configurations.
    • The findings provide valuable data for applications utilizing saddle field ion sources and ion beam sputtering.