The fast ICCD images and the corresponding spatial resolved emission spectra of the laser ablated Al plasmas at different delay time under a pressure of 50 Pa in air.
The spatial resolved emission spectral at 100 ns with characteristic lines labeled.
The fast ICCD images and the corresponding spatial resolved emission spectra of the laser ablated Al plasmas at 100 ns under different pressures in air.
Front positions of the excited Al I-III at 50 Pa and 500 Pa.
The fast photograph (a) and the laser shadowgraph (b) of laser ablated plasma plume at 1100 Pa.
The mean charge (a) and the ion charge distribution (b) at various plasma parameters.
Time evolutions of electron density profiles at the fast moving part at 50 Pa and 500 Pa.
Emission lines of Al I-III from NIST (Database: http://physics.nist.gov/PhysRefData/ASD/lines form.html).
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