Lithium beam Zeeman spectroscopy diagnostic development

Weber, P G; Wurden, G A

Title: Lithium beam Zeeman spectroscopy diagnostic development

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Abstract

A local magnetic field diagnostic, based on the Zeeman splitting of lithium atoms is under development at Los Alamos. A modified duoPIGatron ion source is used in conjunction with an 80-kV accelerator to produce a high-density atomic lithium beam, permitting access to plasmas with a wide range of parameters. Detection of the Zeeman pattern in the plasma will be enhanced by the use of a dye laser, either using fluorescence or intracavity absorption (ICA). While the sensitivity of resonance fluorescence is well known, that of ICA is less well understood where short time scales are involved. Experiments to study the time/concentration trade-offs in ICA have been performed on lithium vapor, and show that the sensitivity of ICA is at least equal to that of fluorescence (assuming a dark background), under conditions of submillisecond detection times. ICA is also 10/sup 3/ times more sensitive than single-pass absorption under these conditions. Optimization of the atomic beam and integration with the dye laser systems are in progress.

Authors:: Weber, P G; Wurden, G A

Publication Date:: Wed May 01 00:00:00 EDT 1985

Research Org.:: Los Alamos National Lab., NM

OSTI Identifier:: 5138924

Report Number(s):: CONF-840922-
Journal ID: CODEN: RSINA; TRN: 86-031906

Resource Type:: Conference

Journal Name:: Rev. Sci. Instrum.; (United States)

Additional Journal Information:: Journal Volume: 56:5; Conference: 5. APS topical conference on high temperature plasma diagnostics, Tahoe City, CA, USA, 16 Sep 1984

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; PLASMA DIAGNOSTICS; X-RAY SPECTROSCOPY; ATOMIC BEAMS; DESIGN; DYE LASERS; FLUORESCENCE; PERFORMANCE; ZEEMAN EFFECT; BEAMS; LASERS; LIQUID LASERS; LUMINESCENCE; SPECTROSCOPY; 700102* - Fusion Energy- Plasma Research- Diagnostics; 440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments

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                    Weber, P G, and Wurden, G A. Lithium beam Zeeman spectroscopy diagnostic development.  United States: N. p., 1985. 
        Web.

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                    Weber, P G, & Wurden, G A. Lithium beam Zeeman spectroscopy diagnostic development.  United States.

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                    Weber, P G, and Wurden, G A. 1985.  
        "Lithium beam Zeeman spectroscopy diagnostic development".  United States.

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@article{osti_5138924,

  title        = {Lithium beam Zeeman spectroscopy diagnostic development},

  author       = {Weber, P G and Wurden, G A},

  abstractNote = {A local magnetic field diagnostic, based on the Zeeman splitting of lithium atoms is under development at Los Alamos. A modified duoPIGatron ion source is used in conjunction with an 80-kV accelerator to produce a high-density atomic lithium beam, permitting access to plasmas with a wide range of parameters. Detection of the Zeeman pattern in the plasma will be enhanced by the use of a dye laser, either using fluorescence or intracavity absorption (ICA). While the sensitivity of resonance fluorescence is well known, that of ICA is less well understood where short time scales are involved. Experiments to study the time/concentration trade-offs in ICA have been performed on lithium vapor, and show that the sensitivity of ICA is at least equal to that of fluorescence (assuming a dark background), under conditions of submillisecond detection times. ICA is also 10/sup 3/ times more sensitive than single-pass absorption under these conditions. Optimization of the atomic beam and integration with the dye laser systems are in progress.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5138924},
  journal      = {Rev. Sci. Instrum.; (United States)},
number       = ,

  volume       = 56:5,

  place        = {United States},

  year         = {Wed May 01 00:00:00 EDT 1985},

  month        = {Wed May 01 00:00:00 EDT 1985}

}

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