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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
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.
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).
- 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.