2006
An experimental study of high power microwave pulsed discharge in nitrogen
MEŠKO, Marcel, Zdeněk BONAVENTURA, Petr VAŠINA, Vít KUDRLE, Antonín TÁLSKÝ et. al.Základní údaje
Originální název
An experimental study of high power microwave pulsed discharge in nitrogen
Název česky
Experimentální studie vysokovýkonového mikrovlnného pulzního výboje v dusíku
Autoři
MEŠKO, Marcel (703 Slovensko), Zdeněk BONAVENTURA (203 Česká republika, garant), Petr VAŠINA (203 Česká republika), Vít KUDRLE (203 Česká republika), Antonín TÁLSKÝ (203 Česká republika), David TRUNEC (203 Česká republika), Zdeněk FRGALA (203 Česká republika) a Jan JANČA (203 Česká republika)
Vydání
Plasma Sources Science and Technology, Bristol, Institute of Physics Publishing, 2006, 0963-0252
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10305 Fluids and plasma physics
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.346
Kód RIV
RIV/00216224:14310/06:00015753
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000240655500037
Klíčová slova anglicky
microwave discharge; pulsed discharge; nitrogen
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 6. 6. 2008 14:15, prof. Mgr. Vít Kudrle, Ph.D.
V originále
We investigated a plasma excited by high power pulsed microwaves (MWs) (pulse duration 2.5 mikrosecond repetition rate 400 Hz, peak power 100 kW, frequency 9.4 GHz) in nitrogen at reduced pressure (pressure range 10-2000 Pa) with the aim of a better understanding of such types of discharge. The construction of the experimental device suppresses the plasmawall interactions and therefore the volume processes are predominant. To obtain the temporal evolution of the electron density we used two MW interferometers at frequencies of 15 and 35 GHz with dielectric rod waveguides which gives them the capability of localized measurements. We estimated the effective collision frequency from the absorption of a measurement beam. Time resolved optical emission spectroscopy of the 1st negative system and the 2nd positive system was carried out, too. Due to a high power input the discharge dynamics was fast and the steady state was typically reached in 1 mikrosecond. We found that the effective collision frequency has the same temporal behaviour as the 2nd positive system of N2, including a characteristic maximum at the beginning of the pulse.
Česky
We investigated a plasma excited by high power pulsed microwaves (MWs) (pulse duration 2.5 mikrosecond, repetition rate 400 Hz, peak power 100 kW, frequency 9.4 GHz) in nitrogen at reduced pressure (pressure range 10-2000 Pa) with the aim of a better understanding of such types of discharge. The construction of the experimental device suppresses the plasmawall interactions and therefore the volume processes are predominant. To obtain the temporal evolution of the electron density we used two MW interferometers at frequencies of 15 and 35 GHz with dielectric rod waveguides which gives them the capability of localized measurements. We estimated the effective collision frequency from the absorption of a measurement beam. Time resolved optical emission spectroscopy of the 1st negative system and the 2nd positive system was carried out, too. Due to a high power input the discharge dynamics was fast and the steady state was typically reached in 1 mikrosecond. We found that the effective collision frequency has the same temporal behaviour as the 2nd positive system of N2, including a characteristic maximum at the beginning of the pulse.
Návaznosti
| GA202/06/0776, projekt VaV |
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| MSM0021622411, záměr |
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