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Spectroscopic Diagnostics of Laser Plasma Plume of Aluminum
Volume 4, Issue 5, October 2015, Pages: 31-36
Received: Sep. 4, 2015; Accepted: Sep. 22, 2015; Published: Oct. 9, 2015
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Mikhailo Chuchman, Physical Phaculty, Uzhgorod National University, Uzhgorod, Ukraine
Livia Mesarosh, Physical Phaculty, Uzhgorod National University, Uzhgorod, Ukraine
Aleksandr Shuaibov, Physical Phaculty, Uzhgorod National University, Uzhgorod, Ukraine
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The emission of aluminum Al laser ablated plasma has been investigated in the 200-600 nm spectral range. The most intensive spectral lines were 308.2; 309.3; 394.4 and 396.2 nm Al I. The highest levels of neutral atoms, responsible for the detected spectral lines, correspond to the two-electron excitation with 8.3-9.06 eV energy. The time average value of electron temperature on the 1 and 7 mm distances from the target was calculated. It is 0.43 eV for 1 mm and 0.51 eV for 7 mm distance from the target. The experimentally obtained time of recombination (29 ns) have been used to extract the electron number density at 1 mm from the target which is 9.4×1015 cm-3. The time-resolved emission of atomic spectral lines at 1 mm distance from the target was studied. The maximums of aluminum spectral lines emission have appeared in times of 8-20 ns, which correspond to atom velocities of (0.05-0.13)106 m/s.
Aluminum Laser Plasma, Emission Spectrum, Laser Plume, Oscillograms of Spectral Lines
To cite this article
Mikhailo Chuchman, Livia Mesarosh, Aleksandr Shuaibov, Spectroscopic Diagnostics of Laser Plasma Plume of Aluminum, Optics. Vol. 4, No. 5, 2015, pp. 31-36. doi: 10.11648/j.optics.20150405.11
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