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Statements

Subject Item
n2:RIV%2F61389021%3A_____%2F07%3A00087212%21RIV08-AV0-61389021
rdf:type
skos:Concept n8:Vysledek
dcterms:description
Optical emission spectroscopy is used to determine the temperature in a plasma jet expanding from the H2O-Ar dc arc torch into a chamber maintained at a pressure of 10 kPa. The excitation and rotational temperatures are derived from relative intensities of argon atomic and ionic lines, and from the UV OH band at 306.357 nm, respectively. The ionization temperature is obtained from the intensity ratio of argon ionic and atomic lines, using electron number density calculated from the Stark broadening of hydrogen H line. The structure of the plasma jet is characterized by isocontours of electron number density and intensity of atomic and ionic lines. In the expansion region, the ionic excitation temperature is found close to the ionization temperature and much higher than the excitation temperature of argon atoms, which is close to the rotational temperature of OH radical. In the normal shock region, all the measured temperatures tend to be equal. Optical emission spectroscopy is used to determine the temperature in a plasma jet expanding from the H2O-Ar dc arc torch into a chamber maintained at a pressure of 10 kPa. The excitation and rotational temperatures are derived from relative intensities of argon atomic and ionic lines, and from the UV OH band at 306.357 nm, respectively. The ionization temperature is obtained from the intensity ratio of argon ionic and atomic lines, using electron number density calculated from the Stark broadening of hydrogen H line. The structure of the plasma jet is characterized by isocontours of electron number density and intensity of atomic and ionic lines. In the expansion region, the ionic excitation temperature is found close to the ionization temperature and much higher than the excitation temperature of argon atoms, which is close to the rotational temperature of OH radical. In the normal shock region, all the measured temperatures tend to be equal. Metodami optické emisní spektroskopie určujeme teploty ve volném proudu plazmatu, který expanduje do nízkotlaké komory, ve které udržujeme konstantní tlak 10 kPa. Z měření lze odvodit excitační, ionizační, rotační a vibrační teplotu v různých místech plazmatu. V expanzní části proudu se teploty navzájem liší, naopak v oblasti rázové vlny jsou teploty téměř identické.
dcterms:title
Measurement of excitation and ionization temperatures in an expanding H2O-Ar DC arcjet Measurement of excitation and ionization temperatures in an expanding H2O-Ar DC arcjet Měření excitačních a ionizačních teplot v expandujícím proudu H2O-Ar plazmatu
skos:prefLabel
Measurement of excitation and ionization temperatures in an expanding H2O-Ar DC arcjet Measurement of excitation and ionization temperatures in an expanding H2O-Ar DC arcjet Měření excitačních a ionizačních teplot v expandujícím proudu H2O-Ar plazmatu
skos:notation
RIV/61389021:_____/07:00087212!RIV08-AV0-61389021
n4:strany
1823;1826
n4:aktivita
n15:P n15:Z
n4:aktivity
P(GA202/05/0669), Z(AV0Z20430508)
n4:dodaniDat
n5:2008
n4:domaciTvurceVysledku
n9:1743163 n9:4668162
n4:druhVysledku
n11:D
n4:duvernostUdaju
n18:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
432471
n4:idVysledku
RIV/61389021:_____/07:00087212
n4:jazykVysledku
n13:eng
n4:klicovaSlova
optical emission spectroscopy; temperature; plasma jet
n4:klicoveSlovo
n10:temperature n10:plasma%20jet n10:optical%20emission%20spectroscopy
n4:kontrolniKodProRIV
[C48CEC51FB7F]
n4:mistoKonaniAkce
Praha
n4:mistoVydani
Prague
n4:nazevZdroje
XXVIII International Conference on Phenomena in Ionized gases. Proceedings
n4:obor
n7:BL
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
2
n4:projekt
n19:GA202%2F05%2F0669
n4:rokUplatneniVysledku
n5:2007
n4:tvurceVysledku
Mašláni, Alan Sember, Viktor
n4:typAkce
n17:WRD
n4:zahajeniAkce
2007-07-15+02:00
n4:zamer
n14:AV0Z20430508
s:numberOfPages
4
n16:hasPublisher
Ústav fyziky plazmatu AV ČR
n21:isbn
978-80-87026-01-4