Spatial and emission characteristics of aluminum laser torch plasma

Чучман, М. П.; Suaibov, A. K.; Mesarosh, L. V.

doi:10.1134/s0018151x11030023

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Obviously, due to the different spatial position of ions with different charge, these data provide the overall picture of the temperature of electrons in the different spatial areas of plasma. In particular, the energy spectrums of ions with different charge have also indicated it [16]. It is also necessary to remark that Al 3+ in plasma at a distance of 7 mm from the target formed through the recombination processes remain in very insubstantial quantity and they stop determining the formation of the higher excited states of double-charged ions.…”

Section: Resultsmentioning

confidence: 96%

Spectroscopic Diagnostics of Laser Plasma Plume of Aluminum

Чучман¹,

Mesarosh

Шуаибов³

2015

Optics

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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)×10 6 m/s.

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Section: Resultsmentioning

confidence: 96%

Spectroscopic Diagnostics of Laser Plasma Plume of Aluminum

Чучман¹,

Mesarosh

Шуаибов³

2015

Optics

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Ablative Laser Processing of Metals and Dielectrics in an Electrostatic Field

Кочуев

Raznoschikov

Chkalov

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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The work considers the task of synthesis of highly dispersed spherical powder granules by laser ablation method. To improve the geometry of synthesized particles and increase the process productivity, an electrostatic system for collecting ablation products was used, which allows the formed particles to leave the area of laser irradiation without being subjected to excessive exposure to a heat source. Using an external field makes particle motion predetermined, ensuring their adhesion to the electrodes. The paper shows the experimental results on the removal of ablated particles, as well as an assessment of the effectiveness of electrostatic field for accelerating particle motion.

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