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[The Stark broadening and Stark shift with different electric microfield distribution functions]
Jun-Xia Ran1, Xia Li, Shao-Peng Zhang
1College of Physics Science and Technology, Hebei University, Baoding 071002, China. rjxhbu@hbu.cn
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|March 10, 2010
Summary
This study analyzed how different electric microfield distribution functions affect Stark broadening and Stark shift in plasmas. The findings highlight the significant impact of plasma ion interactions on spectral line profiles, crucial for accurate plasma diagnostics.
Area of Science:
- Atomic and Molecular Physics
- Plasma Physics
- Spectroscopy
Context:
- Understanding spectral line shapes is essential for plasma characterization.
- Stark broadening and shift are sensitive plasma parameters influenced by electric microfields.
- Various microfield distribution functions (Holtsmark, Neutral Point, Nearest-Neighbor, Mayer model) exist, each with different assumptions.
Purpose:
- To investigate the influence of different electric microfield distribution functions on Stark broadening and Stark shift.
- To quantify how variations in these functions affect spectral line profiles.
- To determine the optimal microfield distribution function for accurate plasma diagnosis.
Summary:
- Stark broadening and shift were calculated using four distinct electric microfield distribution functions.
- Results indicate that the impact of these functions on spectral profiles intensifies with increasing plasma ion and electron impact parameters.
- The Mayer model showed a particularly distinct influence at larger ion impact parameters.
Impact:
- The study underscores the critical role of plasma ion impact on spectral line profiles.
- Selecting the appropriate electric microfield distribution function is vital for precise plasma diagnostics.
- Findings provide valuable references for advanced plasma diagnosis techniques.
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