Self-organization and growth of dust structures in a glow discharge

Bulba, A. V.; Luizova, L. A.; Podryadchikov, S. F.; Khakhaev, A. D.; Shcherbina, A. I.

doi:10.1134/s001814390602010x

Cited by 11 publications

(10 citation statements)

References 2 publications

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“…In papers [8], [9], spectra were measured for a variety of the dusty structure sizes in neon and argon glow discharge. The experiments revealed that the electric field strength in a discharge increased at low currents in neon and argon upon the injection of Al 2 O 3 and zinc particles, whereas line intensities remained unchanged against the background of experimental errors.…”

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confidence: 99%

Spectral Study of Glow Discharge With Dusty Structures

Pikalev

Kobylin

Semenov

2018

IEEE Trans. Plasma Sci.

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Abstract-We present the results of the experimental study of the influence of dusty structures on plasma. We have studied glow discharges in neon and argon with Al2O3 polydisperse particles and melamine-formaldehyde monodisperse particles with the diameter of 4.83 µm. We used optical emission spectroscopy and laser-induced fluorescence methods to measure shift of excited atoms populations, which led to similar results. In most cases, the population change was negligible as compared to the inaccuracy. Al2O3 particles in argon formed large structures which caused dramatic redistribution of radiation. In this case, spectral lines and fluorescence became 9-50% weaker at the tube center after dusty structure formation. It might be accounted for by a decrease of electron density due to recombination on the surfaces of the particles. Near the tube wall, the radiation became brighter due to an electron temperature increase. Photographs of the discharge allowed us to calculate the radial distribution of the population shift.

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Spectral Study of Glow Discharge With Dusty Structures

Pikalev

Kobylin

Semenov

2018

IEEE Trans. Plasma Sci.

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“…To conduct the experiment, we constructed a setup consisting of a complex plasma-creating system [1], a Fabry-Perot interferometer, a monochromator, and a photoregistration system based on a photomultiplier. Light from a discharge tube passed through the interferometer.…”

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confidence: 99%

“…Having an electrical charge, the grains disturb an electrical field around themselves. Changing the plasma spectral characteristics, as dusty particles are injected, is well studied (see, e.g., [1]).…”

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confidence: 99%

Research into a Neon Spectral Line Profile of Dusty Plasma

Pikalev

Luizova

2014

Ukr. J. Phys.

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Ordered dusty structures influence plasma conditions. This influence can be revealed, when plasma spectral characteristics change, as dusty particles are injected. For example, a variation in the atomic temperature leads to a variation in the profiles of spectral lines. We studied the profile of a 585 nm neon spectral line in the dusty structures. The structures levitated in a positive column of a glow discharge at a pressure of 50-150 Pa and with a current of 1-9 mA. We scanned the profile with the use of a Fabry-Perot interferometer, by changing the air pressure between the interferometer mirrors. To process the data, a special algorithm was developed. The algorithm is resistant to a noise and a scanning speed instability. We have found an upper bound of the impact of dusty structures on the profile width. The appearance of macroparticles changes the atomic plasma temperature less than by 10 K.

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“…In that way Debye radius was found for a number of dusty plasma substances obtained in a dc discharge [1,2] at low pressure (0.3-1 torr) and small current (0.3-1. …”

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confidence: 97%