Dusty plasma in a glow discharge in helium in temperature range of 5–300 K

Samoilov, I. S.; Baev, V.P.; Тимофеев, А. В.; Амиров, Р. Х.; Kirillin, A. V.; Nikolaev, V. S.; Bedran, Z. V.

doi:10.1134/s106377611702008x

Cited by 15 publications

(14 citation statements)

References 25 publications

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“…A formation of superdense ordered dusty plasma structures at the lowest temperatures was expected for many years based on the assumption of the validity of a direct relation between the kinetic energy of microscopic particles and the neutral gas temperature 15,19 . Nevertheless, this assumption has not been confirmed experimentally 20 . Another interesting and still unexplained experimental result is a decrease in the dust particle charge with a decrease in the neutral gas temperature 16–18 .…”

Section: Introductionmentioning

confidence: 93%

“…Not many comparative experimental studies of dusty plasmas at 4.2 K and 77 K have been conducted so far 14–19 . The results of these studies have been recently reviewed and analyzed in 20 . Contradictory results on the temperature dependence of the interparticle distance in dusty plasma structures have been discussed in 20 .…”

Section: Introductionmentioning

confidence: 99%

“…The results of these studies have been recently reviewed and analyzed in 20 . Contradictory results on the temperature dependence of the interparticle distance in dusty plasma structures have been discussed in 20 . A formation of superdense ordered dusty plasma structures at the lowest temperatures was expected for many years based on the assumption of the validity of a direct relation between the kinetic energy of microscopic particles and the neutral gas temperature 15,19 .…”

Section: Introductionmentioning

confidence: 99%

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Formation of solid helical filaments at temperatures of superfluid helium as self-organization phenomena in ultracold dusty plasma

Boltnev

Vasiliev

Kononov

et al. 2019

Sci Rep

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A multimodal dusty plasma formed in a positive column of the direct current glow discharge at superfluid helium temperatures has been studied for the first time. Formation of a liquid-like dusty plasma structure occurred after injection of polydisperse cerium oxide particles in the glow discharge. The coupling parameter ~10 determined for the dusty plasma structure corresponds very well to its liquid-like type. The cloud of nanoparticles and non-linear waves within the cloud were observed at T < 2 K. Solid helical filaments with length up to 5 mm, diameter up to 22 μm, total charges ~10 6 е, levitating in the gas discharge at the temperature ~2 K and pressure 4 Pa have been observed for the first time. Analysis of the experimental conditions and the filament composition allows us to conclude that the filaments and nanoclusters were formed due to ion sputtering of dielectric material during the experiments.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Formation of solid helical filaments at temperatures of superfluid helium as self-organization phenomena in ultracold dusty plasma

Boltnev

Vasiliev

Kononov

et al. 2019

Sci Rep

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“…In recent years, studies of cryogenic dusty plasma have become relevant, which is due to various fundamental and technological aspects [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Notably, the study of ultra-low-temperature discharges is an independent physical problem [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…The same results are presented in a study by [ 6 ]. On the other hand, in [ 9 ], by studying the dust interparticle distance, it was found that the screening radius exceeds the Debye ionic radius by an order of magnitude assuming that the ionic and atomic temperatures are equal. Possible explanations for this phenomenon can be a nonlinear screening of a particle charge [ 14 , 15 ], overheating of ions in the discharge plasma [ 16 , 17 , 18 , 19 , 20 , 21 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Dust-Acoustic Nonlinear Waves in a Nanoparticle Fraction of Ultracold (2K) Multicomponent Dusty Plasma

et al. 2021

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The nonlinear dust-acoustic instability in the condensed submicron fraction of dust particles in the low-pressure glow discharge at ultra-low temperatures is experimentally and theoretically investigated. The main discharge parameters are estimated on the basisof the dust-acoustic wave analysis. In particular, the temperature and density of ions, as well as the Debye radius, are determined. It is shown that the ion temperature exceeds the temperature of the neutral gas. The drift characteristics of all plasma fractions are estimated. The reasons for the instability excitation are considered.

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Responsive Regulation of Energy Transfer in Lanthanide‐Doped Nanomaterials Dispersed in Chiral Nematic Structure

Luo,

Liu,

et al. 2023

Advanced Science

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The responsive control of energy transfer (ET) plays a key role in the broad applications of lanthanide‐doped nanomaterials. Photonic crystals (PCs) are excellent materials for ET regulation. Among the numerous materials that can be used to fabricate PCs, chiral nematic liquid crystals are highly attractive due to their good photoelectric responsiveness and biocompatibility. Here, the mechanisms of ET and the photonic effect of chiral nematic structures on ET are introduced; the regulation methods of chiral nematic structures and the resulting changes in ET of lanthanide‐doped nanomaterials are highlighted; and the challenges and promising opportunities for ET in chiral nematic structures are discussed.

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Dusty plasma in a glow discharge in helium in temperature range of 5–300 K

Cited by 15 publications

References 25 publications

Formation of solid helical filaments at temperatures of superfluid helium as self-organization phenomena in ultracold dusty plasma

Formation of solid helical filaments at temperatures of superfluid helium as self-organization phenomena in ultracold dusty plasma

Dust-Acoustic Nonlinear Waves in a Nanoparticle Fraction of Ultracold (2K) Multicomponent Dusty Plasma

Responsive Regulation of Energy Transfer in Lanthanide‐Doped Nanomaterials Dispersed in Chiral Nematic Structure

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