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Laser ion source development at Holifield Radioactive Ion Beam Facility.

Y Liu1, T Gottwald, C C Havener

  • 1Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA. liuy@ornl.gov

The Review of Scientific Instruments
|March 3, 2012
PubMed
Summary
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Researchers developed an efficient resonant-ionization laser ion source using Ti:sapphire lasers for nuclear and astrophysics research. This upgraded system achieves 40% efficiency, improving atom trapping and beam quality.

Area of Science:

  • Nuclear Physics
  • Astrophysics
  • Atomic Physics

Background:

  • Development of advanced ion sources is crucial for nuclear and astrophysics research.
  • Holifield Radioactive Ion Beam Facility requires high-efficiency ion beams.

Purpose of the Study:

  • To develop and optimize a resonant-ionization laser ion source using tunable Ti:sapphire lasers.
  • To enhance the efficiency and performance of ion beam production for research applications.

Main Methods:

  • Upgraded three Ti:sapphire lasers with individual pump lasers to prevent synchronization delays.
  • Investigated ionization schemes for 14 different elements.
  • Studied tantalum carbide (TaC) surface coatings to minimize atom trapping.

Main Results:

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  • Achieved an overall efficiency of up to 40% for the laser ion source.
  • Successfully obtained ionization schemes for 14 elements.
  • Demonstrated the effectiveness of TaC coatings in reducing atom trapping.

Conclusions:

  • The upgraded resonant-ionization laser ion source significantly enhances efficiency for nuclear and astrophysics research.
  • The developed ionization schemes and surface treatments provide a robust platform for future experiments.
  • This technology advances the capabilities of radioactive ion beam facilities.