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Related Experiment Videos

Experimental and calculated Stark widths within the Kr I spectrum.

V Milosavljević1, S Djenize, M S Dimitrijević

  • 1Faculty of Physics, University of Belgrade, P.O.B. 368, Serbia, Yugoslavia. vladimir@ff.bg.ac.yu

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|August 26, 2003
PubMed
Summary

A new deconvolution procedure accurately determines plasma parameters like electron temperature and density from krypton line shapes. This method is valuable for astrophysics where direct measurements are impossible.

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Area of Science:

  • Plasma Physics
  • Atomic Spectroscopy
  • Astrophysics

Background:

  • Accurate plasma diagnostics are crucial for understanding physical phenomena.
  • Electron temperature (T) and electron density (N) are fundamental plasma parameters.
  • Astrophysical plasmas often lack direct measurement capabilities for T and N.

Purpose of the Study:

  • To develop and validate a line deconvolution procedure for determining plasma parameters.
  • To assess the applicability of the method in astrophysics.
  • To investigate ion broadening and dynamic effects on spectral line shapes.

Main Methods:

  • Recording 20 neutral krypton (Kr I) line shapes in 5s-5p and 5s-6p transitions.
  • Utilizing a line deconvolution procedure to derive electron temperature (T) and electron density (N).

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  • Comparing results with independent experimental diagnostics techniques.

    • Main Results:

    • The deconvolution procedure yielded results consistent with independent measurements of T and N.
    • Observed line profile asymmetry allowed determination of ion broadening parameter (A) and ion-dynamic effect (D).
    • Separate contributions of electron (W(e)) and ion (W(i)) broadening to Stark width were obtained.

    Conclusions:

    • The developed deconvolution procedure is a reliable tool for plasma diagnostics.
    • The method shows significant promise for astrophysical applications.
    • Detailed analysis of Stark broadened line profiles provides insights into plasma composition and dynamics.