Journal ArticleDOI
Polarity effect of applied pulse voltage on the development of uniform nanosecond gas breakdown
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TLDR
In this article, the spatio-temporal evolution of electric parameters of plasma and emission produced by high-voltage periodic pulsed discharge has been studied, where the discharge was initiated by voltage pulses of 13.5 kV amplitude, 25 ns duration and 6 ns rise time with a repetition frequency of 40 Hz in molecular nitrogen at a pressure of 5 Torr.Abstract:
The spatio-temporal evolution of electric parameters of plasma and emission produced by high-voltage periodic pulsed discharge has been studied. The discharge was initiated by voltage pulses of 13.5 kV amplitude, 25 ns duration and 6 ns rise time with a repetition frequency of 40 Hz in molecular nitrogen at a pressure of 5 Torr. Differences between discharge characteristics for positive and negative polarities of the pulse has been investigated. The net electrical charge was measured by a calibrated capacitive gauge moving along the discharge tube. Time-resolved electric fields and electron densities at different distances from the high-voltage electrode were obtained. On the other hand, the electric field was derived from relative time-resolved emissions of second positive and first negative systems of molecular nitrogen. The spatial and temporal behaviour of the emission correlates with the behaviour of the electric field obtained from electrical measurements. A comparison of electric field values determined by different methods demonstrates a significant dependence of the results on the voltage polarity and leads to the conclusion that their differences, when working with positive polarity of voltage, is due to the non-local character of the discharge development.read more
Citations
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Journal ArticleDOI
Plasma assisted ignition and combustion
TL;DR: In this paper, a review of applications of nonequilibrium plasma for the problems of plasma assisted ignition and plasma-assisted combustion has been observed and historical references highlighting pioneering works in the area are presented.
Journal ArticleDOI
Mechanism of ultra-fast heating in a non-equilibrium weakly ionized air discharge plasma in high electric fields
TL;DR: In this paper, a kinetic model was developed to describe the processes that contribute towards the fast transfer of electron energy into thermal energy under the conditions considered, taking into account previously suggested mechanisms to describe observations of fast heating in moderate (~102 Td) reduced electric fields.
Reference EntryDOI
4 Plasma-Assisted Ignition and Combustion
TL;DR: The sections in this article are============Initiation and plasma used for combustion initiation and combustion initiation as mentioned in this paper, and discharge behind the reflected shock wave: Decrease of Ignition Delay Time.
Journal ArticleDOI
Nanosecond-Pulsed Discharges for Plasma-Assisted Combustion and Aerodynamics
Andrei Starikovskii,Nikolai B. Anikin,Ilya Kosarev,Eugeny I. Mintoussov,Maria Nudnova,Aleksandr Rakitin,Dmitry Roupassov,Svetlana Starikovskaia,Victor P. Zhukov +8 more
TL;DR: In this article, the efficiency of nanosecond discharges as an active-particle generator for plasma-assisted combustion and ignition has been investigated and a significant increase of the flame blowoff velocity has been demonstrated.
Journal ArticleDOI
Fast gas heating in nitrogen–oxygen discharge plasma: II. Energy exchange in the afterglow of a volume nanosecond discharge at moderate pressures
TL;DR: In this article, the role of processes with participation of excited and charged species was analyzed and it was shown that about 24% of the discharge energy goes to fast gas heating during the first tens of microseconds after the discharge.
References
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Book
Gas Discharge Physics
TL;DR: In this article, the authors present an overview of the history of electric discharge physics and its application in the field of gas discharging in the presence of longitudinal gradients of charge density.
Book
Numerical Methods for the Solution of Ill-Posed Problems
TL;DR: In this paper, the authors present algorithms and programs for solving linear ill-posed problems on compact sets and regularization methods for the approximate solution of these problems on special sets, respectively.
Journal ArticleDOI
Nonlocal electron kinetics in collisional gas discharge plasmas
Vladimir Kolobov,Valery Godyak +1 more
TL;DR: In this article, a non-local approach to analyze electron kinetics in nonuniform plasmas in DC and RF fields for atomic gases is presented for the nonlocal case.
Journal ArticleDOI
Pulsed breakdown at high overvoltage: development, propagation and energy branching
TL;DR: In this article, a review of detailed spatial and temporal structures of high-voltage pulsed nanosecond discharges in the form of fast ionization waves is presented, and the most distinctive features of this type of discharge are a high propagation velocity (109-1010 cm s-1), good reproducibility of the discharge parameters at a moderate (tens of hertz) repetition rate and spatial homogeneity over a large gas volume.
Journal ArticleDOI
Measurements of rate constants of the N2(C3Πu,v′=0) and N2+(B2Σ+u,v′=0) deactivation by N2, O2, H2, CO and H2O molecules in afterglow of the nanosecond discharge
TL;DR: In this paper, the lifetimes of N 2 (C 3 Π u, v′=0) and N 2 + (B 2 Σ + u, v′ = 0) states and rates of their quenching by molecules of N2, O2, H2, CO and H2O have been determined by emission spectroscopy.