Measurement of excitation and ionization temperatures in an expanding H2O-Ar DC arcjet

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F07%3A00087212" target="_blank" >RIV/61389021:_____/07:00087212 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Measurement of excitation and ionization temperatures in an expanding H2O-Ar DC arcjet

Original language 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 intensitiesof 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 andmuch 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.

Czech name

Měření excitačních a ionizačních teplot v expandujícím proudu H2O-Ar plazmatu

Czech description

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.

Type

D - Article in proceedings

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

<a href="/en/project/GA202%2F05%2F0669" target="_blank" >GA202/05/0669: Expanding supersonic plasma jet generated in dc water-stabilized arcs</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

XXVIII International Conference on Phenomena in Ionized gases. Proceedings

ISBN

978-80-87026-01-4

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

1823-1826

Publisher name

Institute of Plasma Physics AS CR, v.v.i

Place of publication

Prague

Event location

Praha

Event date

Jul 15, 2007

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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