Fine structure of MW discharge: Evolution scenario

Yuri F. Kolesnichenko, Vadim G. Brovkin, Dmitry V. Khmara, Valery A. Lashkov, Igor Ch Mashek, Mark I. Ryvkin

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференции

5 Цитирования (Scopus)

Выдержка

The aim of current investigation is to evaluate by means of analytic and kinetic modeling the characteristics of the microwave (MW) breakdown filament. Separate MW breakdown domain passes through several phases in its development and as a result of it the discharge plasmoid is not homogeneous, but have an internal structure. Inside relatively uniform bulk main domain of plasmoid, there may appear very thin hot channel, or filament. An attempt is made to construct analytic solution for this stage which is characterized by interconnection of electrodynamic, gas dynamic, kinetic processes and is strongly non-linear. The finite-time explosive analytic solution, as well as characteristic time of the process is obtained. The solution describes collapse-like creation of channel(s) with high electron and energy concentration. Also optical emission spectra obtained from MW discharge in supersonic flows of air and nitrogen has shown that along with the second positive nitrogen system bands, the first negative system bands of the positive nitrogen molecule ion are definitely observed. Gas temperatures defined by processing of the rotational spectra bands of each system turned out to differ strongly. This fact let us suppose that light emission from nitrogen molecules and ions is coming from different spatial domains - the second positive nitrogen system is lightening from the relatively cold bulk hallo, whereas the first negative - from the hot breakdown filament. Comparison of the results of kinetic modeling with experimental ones let us determine the minimal electron concentration in the filament as 1016 cm-3 under 70Torr air pressure and its dimension as less than 10-2 cm.

Язык оригиналаанглийский
Название основной публикации41st Aerospace Sciences Meeting and Exhibit
СостояниеОпубликовано - 1 дек 2003
Событие41st Aerospace Sciences Meeting and Exhibit 2003 - Reno, NV, Соединенные Штаты Америки
Продолжительность: 6 янв 20039 янв 2003

Серия публикаций

Название41st Aerospace Sciences Meeting and Exhibit

Конференция

Конференция41st Aerospace Sciences Meeting and Exhibit 2003
СтранаСоединенные Штаты Америки
ГородReno, NV
Период6/01/039/01/03

Отпечаток

fine structure
Microwaves
Nitrogen
filaments
microwaves
nitrogen
breakdown
kinetics
Kinetics
light emission
electron
Molecules
ion
Electrons
supersonic flow
Gas dynamics
electrodynamics
Supersonic flow
air
Electrodynamics

Предметные области Scopus

  • Космические науки и планетоведение
  • Авиакосмическая техника

Цитировать

Kolesnichenko, Y. F., Brovkin, V. G., Khmara, D. V., Lashkov, V. A., Mashek, I. C., & Ryvkin, M. I. (2003). Fine structure of MW discharge: Evolution scenario. В 41st Aerospace Sciences Meeting and Exhibit (41st Aerospace Sciences Meeting and Exhibit).
Kolesnichenko, Yuri F. ; Brovkin, Vadim G. ; Khmara, Dmitry V. ; Lashkov, Valery A. ; Mashek, Igor Ch ; Ryvkin, Mark I. / Fine structure of MW discharge : Evolution scenario. 41st Aerospace Sciences Meeting and Exhibit. 2003. (41st Aerospace Sciences Meeting and Exhibit).
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abstract = "The aim of current investigation is to evaluate by means of analytic and kinetic modeling the characteristics of the microwave (MW) breakdown filament. Separate MW breakdown domain passes through several phases in its development and as a result of it the discharge plasmoid is not homogeneous, but have an internal structure. Inside relatively uniform bulk main domain of plasmoid, there may appear very thin hot channel, or filament. An attempt is made to construct analytic solution for this stage which is characterized by interconnection of electrodynamic, gas dynamic, kinetic processes and is strongly non-linear. The finite-time explosive analytic solution, as well as characteristic time of the process is obtained. The solution describes collapse-like creation of channel(s) with high electron and energy concentration. Also optical emission spectra obtained from MW discharge in supersonic flows of air and nitrogen has shown that along with the second positive nitrogen system bands, the first negative system bands of the positive nitrogen molecule ion are definitely observed. Gas temperatures defined by processing of the rotational spectra bands of each system turned out to differ strongly. This fact let us suppose that light emission from nitrogen molecules and ions is coming from different spatial domains - the second positive nitrogen system is lightening from the relatively cold bulk hallo, whereas the first negative - from the hot breakdown filament. Comparison of the results of kinetic modeling with experimental ones let us determine the minimal electron concentration in the filament as 1016 cm-3 under 70Torr air pressure and its dimension as less than 10-2 cm.",
author = "Kolesnichenko, {Yuri F.} and Brovkin, {Vadim G.} and Khmara, {Dmitry V.} and Lashkov, {Valery A.} and Mashek, {Igor Ch} and Ryvkin, {Mark I.}",
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Kolesnichenko, YF, Brovkin, VG, Khmara, DV, Lashkov, VA, Mashek, IC & Ryvkin, MI 2003, Fine structure of MW discharge: Evolution scenario. в 41st Aerospace Sciences Meeting and Exhibit. 41st Aerospace Sciences Meeting and Exhibit, Reno, NV, Соединенные Штаты Америки, 6/01/03.

Fine structure of MW discharge : Evolution scenario. / Kolesnichenko, Yuri F.; Brovkin, Vadim G.; Khmara, Dmitry V.; Lashkov, Valery A.; Mashek, Igor Ch; Ryvkin, Mark I.

41st Aerospace Sciences Meeting and Exhibit. 2003. (41st Aerospace Sciences Meeting and Exhibit).

Результат исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференции

TY - GEN

T1 - Fine structure of MW discharge

T2 - Evolution scenario

AU - Kolesnichenko, Yuri F.

AU - Brovkin, Vadim G.

AU - Khmara, Dmitry V.

AU - Lashkov, Valery A.

AU - Mashek, Igor Ch

AU - Ryvkin, Mark I.

PY - 2003/12/1

Y1 - 2003/12/1

N2 - The aim of current investigation is to evaluate by means of analytic and kinetic modeling the characteristics of the microwave (MW) breakdown filament. Separate MW breakdown domain passes through several phases in its development and as a result of it the discharge plasmoid is not homogeneous, but have an internal structure. Inside relatively uniform bulk main domain of plasmoid, there may appear very thin hot channel, or filament. An attempt is made to construct analytic solution for this stage which is characterized by interconnection of electrodynamic, gas dynamic, kinetic processes and is strongly non-linear. The finite-time explosive analytic solution, as well as characteristic time of the process is obtained. The solution describes collapse-like creation of channel(s) with high electron and energy concentration. Also optical emission spectra obtained from MW discharge in supersonic flows of air and nitrogen has shown that along with the second positive nitrogen system bands, the first negative system bands of the positive nitrogen molecule ion are definitely observed. Gas temperatures defined by processing of the rotational spectra bands of each system turned out to differ strongly. This fact let us suppose that light emission from nitrogen molecules and ions is coming from different spatial domains - the second positive nitrogen system is lightening from the relatively cold bulk hallo, whereas the first negative - from the hot breakdown filament. Comparison of the results of kinetic modeling with experimental ones let us determine the minimal electron concentration in the filament as 1016 cm-3 under 70Torr air pressure and its dimension as less than 10-2 cm.

AB - The aim of current investigation is to evaluate by means of analytic and kinetic modeling the characteristics of the microwave (MW) breakdown filament. Separate MW breakdown domain passes through several phases in its development and as a result of it the discharge plasmoid is not homogeneous, but have an internal structure. Inside relatively uniform bulk main domain of plasmoid, there may appear very thin hot channel, or filament. An attempt is made to construct analytic solution for this stage which is characterized by interconnection of electrodynamic, gas dynamic, kinetic processes and is strongly non-linear. The finite-time explosive analytic solution, as well as characteristic time of the process is obtained. The solution describes collapse-like creation of channel(s) with high electron and energy concentration. Also optical emission spectra obtained from MW discharge in supersonic flows of air and nitrogen has shown that along with the second positive nitrogen system bands, the first negative system bands of the positive nitrogen molecule ion are definitely observed. Gas temperatures defined by processing of the rotational spectra bands of each system turned out to differ strongly. This fact let us suppose that light emission from nitrogen molecules and ions is coming from different spatial domains - the second positive nitrogen system is lightening from the relatively cold bulk hallo, whereas the first negative - from the hot breakdown filament. Comparison of the results of kinetic modeling with experimental ones let us determine the minimal electron concentration in the filament as 1016 cm-3 under 70Torr air pressure and its dimension as less than 10-2 cm.

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M3 - Conference contribution

AN - SCOPUS:84894786222

SN - 9781624100994

T3 - 41st Aerospace Sciences Meeting and Exhibit

BT - 41st Aerospace Sciences Meeting and Exhibit

ER -

Kolesnichenko YF, Brovkin VG, Khmara DV, Lashkov VA, Mashek IC, Ryvkin MI. Fine structure of MW discharge: Evolution scenario. В 41st Aerospace Sciences Meeting and Exhibit. 2003. (41st Aerospace Sciences Meeting and Exhibit).