Rotational relaxation time of nitrogen in argon

Belikov, A. E.; Solov'ev, I. Yu.; Sukhinin, G. I.; Sharafutdinov, R. G.

doi:10.1007/bf00916739

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…To study the influence of this factor on the reliability of measured gas temperature, we simulate the emission spectrum of N 2 (C-B) for our experimental conditions with assumption that all "second positive system" in nitrogen emission spectrum is excited by collisions with argon metastables. To simulate the rotational relaxation, we use the rate constants determined in theoretical and experimental studies of rotational relaxation of nitrogen molecules in ground state by collisions with surrounding argon atoms [22]. The measured rotational distribution in N 2 (C) excited during collisions with argon metastables [20], and rate constant for quenching of N 2 (C-B) emission in argon [23] are used for this simulation.…”

Section: Determination Of Gas Temperaturementioning

confidence: 99%

Pulsed corona plasma source characterization for film deposition on the inner surface of tubes

Pothiraja¹,

Bibinov²,

Awakowicz³

2010

J. Phys. D: Appl. Phys.

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To cite this version:Ramasamy Pothiraja, Nikita Bibinov, Peter Awakowicz. Pulsed corona plasma source characterization for film deposition on the inner surface of tubes. Journal of Physics D: Applied Physics, IOP Publishing, 2010, 43 (49) Abstract. A microplasma jet has been constructed for chemical vapor deposition on inner surface of narrow long tubes and is tested on a quartz tube with the inner diameter of 6 mm and the outer diameter of 8 mm. A long plasma filament (> 100 mm) is generated inside the tube in argon with methane admixture. Depending on the quantity of admixture in argon, the negative as well as the positive corona discharges are ignited. Both modes of plasma are characterized using optical emission spectroscopy. For this purpose, nitrogen is admixed with argon and its emission is used for the determination of gas temperature, electron velocity distribution function, and electron density at various places along the axis of the tube. The formation of active species, like C, C 2 , CH, etc. during the dissociation of methane, is observed through their characteristic emission. The rate of methane dissociation is determined at various places along the axis of the tube during both modes of discharge. Since the chemical kinetics of film growth process is different, different kinds of films are obtained during different modes of discharge.

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Section: Determination Of Gas Temperaturementioning

confidence: 99%