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[Electron temperature of Al plasma estimated with Ar]
1Department of Physics, Linyi Teacher's University, Linyi 276005, China.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|March 17, 2005
Summary
This study analyzes argon ion (Ar+) emission lines during aluminum plasma ablation with a Nd: YAG laser. Electron temperatures were calculated, showing a decrease over time, aligning with similar research.
Area of Science:
- Laser-induced breakdown spectroscopy (LIBS)
- Atomic and plasma physics
Context:
- Pulsed laser ablation of aluminum targets in an argon atmosphere.
- Observation of argon ion (Ar+) characteristic spectral lines during plasma emission.
Purpose:
- To analyze the time-resolved behavior of specific Ar+ ionic lines (Ar II 385.057, 386.853, 404.291, 407.201 nm).
- To estimate the electron temperature of aluminum plasma during the ionic line emission stage.
Summary:
- Time-resolved analysis of four Ar+ ionic lines was performed during aluminum plasma generation using a pulsed Nd: YAG laser in an argon environment.
- The electron temperature of the aluminum plasma was calculated, ranging from 15,000 K to 22,000 K.
- A successive decrease in electron temperature was observed with increasing delay time.
Impact:
- Provides insights into the plasma dynamics and electron temperature evolution in laser-ablation processes.
- Results show good agreement with estimations from similar studies, validating the methodology.
- Contributes to a better understanding of laser-matter interactions for material analysis and processing.