Stark broadening measurement of Al II lines in a laser-induced plasma

- Stark broadening of Al II lines under various LIP conditions.
- LIP from three different target materials and at two laser wavelengths.
- Data acquisition and processing, self-absorption test and Abel inversion.
- Comparison of Stark parameters with other experimental and theoretical results.
- Application of laser induced plasma for Stark broadening parameters measurement.

Laser induced plasma was a light source for the study of Stark broadening parameters of singly charged aluminum ion lines. Plasma electron number density in the range (0.3-2.3)×1023 m−3 was measured from the Stark width of the hydrogen Hα impurity line, while the electron temperature between 6500 and 17,500 K was determined from relative intensities of Fe II, Mg I and Al II spectral lines using the Boltzmann plot technique. The experimental Stark widths were compared with other experiments and theories, which include semiclassical results and data evaluated from the modified semiempirical formula.