Atmospheric Pressure Pulsed-Periodical Spark Generator Forming Fast Moving Non-Equilibrium Plasma Clouds

Akishev, Yu. S.; Трушкин, Н. И.; Грушин, М. Е.; Petryakov, A. V.; Karalnik, Vladimir

doi:10.1109/tps.2012.2207131

Cited by 4 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(The local capacitance is ≈0.15 pF cm −2 .) The dielectric properties of the shell enable there to be positive charging to 3×10 13 cm −3 at the surface which produces parallel components of the electric field which initiate and then sustain the SIW. The electric field in the head of the volume streamer is 230 Td (1 Td=10 −17 V cm 2 ) largely perpendicular to the surface.…”

Section: Streamer Interaction With a Water Bubble-shellmentioning

confidence: 99%

See 1 more Smart Citation

Interaction of positive streamers in air with bubbles floating on liquid surfaces: conductive and dielectric bubbles

Babaeva

Naidis

Kushner

2018

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

The interaction of plasmas sustained in humid air with liquids produces reactive species in both the gas phase and liquid for applications ranging from medicine to agriculture. In several experiments, enhanced liquid reactivity has been produced when the liquid is a foam or a bubble coated liquid. To investigate the phenomena of streamers interacting with bubbles a twodimensional computational investigation has been performed of streamer initiation and propagation on and inside hemispherical bubble-shells floating on a liquid surface. Following prior experiments, water and oil bubble-shells with an electrode located outside and inside the bubble were investigated. We found that positive air streamers interact differently with conductive water and dielectric oil bubbles. The streamer propagates along the external surface of a water bubble while not penetrating through the bubble due to screening of the electric field by the conducting shell. If the electrode is inserted inside the bubble, the path of the streamer depends on how deeply the electrode penetrates. For shallow penetration, the streamer propagates along the inner surface of the bubble. Due to the low conductivity of oil bubbleshells, the electric field from an external electrode penetrates into the interior of the bubble. The streamer can then be re-initiated inside the bubble.

show abstract

Section: Streamer Interaction With a Water Bubble-shellmentioning

confidence: 99%

“…As such, the majority of applications of plasmas in liquids are based on plasma production inside gas bubbles [5][6][7][8][9][10]. To selectively activate the liquid, plasmas are often sustained in bubbles filled with different gases and artificially injected into liquids [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Interaction of positive streamers in air with bubbles floating on liquid surfaces: conductive and dielectric bubbles

Babaeva

Naidis

Kushner

2018

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

show abstract

The interaction of positive streamers with bubbles floating on a liquid surface

Akishev

Arefi‐Khonsari

Demir

et al. 2015

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

This paper reports the results of a preliminary investigation on the interaction of a streamer discharge in air with bubbles filled with air and floating on a liquid surface. The bubbles are formed of tap water and transformer oil. It was shown that the strike of the streamer in a bubble is followed by the full bubble destroying. However, scenarios of the streamer discharge interaction with a conductive water bubble and dielectric oil bubble are different in their concrete details. A positive streamer smoothly and slowly slides on an external surface of a water bubble, but the streamer striking in an oil bubble quickly perforates it and penetrates into the bubble. The mechanisms for water and oil bubble destroying are discussed. The applicability of the results obtained to plasma-liquid systems based on the use of foam is discussed as well.

show abstract

On the composition of reactive species in air plasma jets and their influence on the adhesion of polyurethane foam to low-pressure polyethylene

Akishev¹,

Aponin²,

Petryakov³

et al. 2018

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

In this paper, non-thermal plasma sources based on the high-frequency sinusoidal coaxial dielectric barrier discharge (DBD) using fast flowing ambient air as feedstock gas at atmospheric pressure are described. These single- and multi-tube sources are able to generate low- and high-power turbulent plasma jets. Experimental results on both the spatio-temporal behavior of plasma inside the DBD and parameters of plasma jet(s) outside the discharge zone are presented. These results are complemented by information on the composition of reactive species generated by high-power airflow DBD. This information has been obtained from analysis of the emissive spectra of the discharge zone and plasma jet in the UV–visual region. The basic set of elementary plasma-chemical processes responsible for the generation of reactive species in the discharge zone and their further changes in hot air plasma jet is also presented. Although the oxygen concentration in the working gas is high, the concentration of reactive species in the plasma jet is enough for effective surface treatment. This is proved by the essential improvement in the adhesion of polyurethane foam (PF) to low-pressure polyethylene (PE) after treatment by the hot air plasma jet. The changes in the spatial microstructure of the scaffolds on PE surfaces taking place after plasma treatment have been established. The reasons for the adhesion improvement are discussed. The results obtained are of both scientific and practical interest, since PE pipes covered with PF are used in the housing and community sectors, the oil and gas industry, etc.

show abstract

Atmospheric Pressure Pulsed-Periodical Spark Generator Forming Fast Moving Non-Equilibrium Plasma Clouds

Cited by 4 publications

References 24 publications

Interaction of positive streamers in air with bubbles floating on liquid surfaces: conductive and dielectric bubbles

Interaction of positive streamers in air with bubbles floating on liquid surfaces: conductive and dielectric bubbles

The interaction of positive streamers with bubbles floating on a liquid surface

On the composition of reactive species in air plasma jets and their influence on the adhesion of polyurethane foam to low-pressure polyethylene

Contact Info

Product

Resources

About