Exited oxygen in glow discharge afterglow

Mikheyev, P. A.; Shepelenko, A. A.; Kupryaev, Nikolay V.; Voronov, A I

doi:10.1117/12.350641

Cited by 4 publications

(6 citation statements)

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“…The analogous dependence of Y on the Ar fraction in a non-self-sustained glow discharge was reported earlier [2]. The largest dilution of oxygen by argon in [3] amounted to O 2 : Ar = 1 : 4. With larger dilutions the results of SO measurements seem questionable to the authors of this paper, because the emission spectrum of the afterglow was absent.…”

Section: Introductionsupporting

confidence: 80%

“…The physical mechanisms of this effect are mostly understood and will be discussed later. In [3] the largest relative SO concentrations in a dc glow discharge afterglow in oxygen diluted by Ar or He were 2.5 times larger than in pure oxygen at 6 Torr oxygen pressure and 4 times larger at 4 Torr oxygen pressure. (Strictly speaking, in these experiments the ratios of N to the sum of concentrations N S of oxygen molecules and atoms were determined and not Y .)…”

Section: Introductionmentioning

confidence: 82%

“…It was found in experiments that relative SO concentrations are larger in mixtures of oxygen with rare gases than in pure oxygen [2][3][4]. The physical mechanisms of this effect are mostly understood and will be discussed later.…”

Section: Introductionmentioning

confidence: 99%

“…With larger dilutions the results of SO measurements seem questionable to the authors of this paper, because the emission spectrum of the afterglow was absent. As is customary, the SO concentration in [3] was determined measuring the intensity of emission of the 1270 nm O 2 ( ) →O 2 (X) band. Stray spectral lines have been found in the vicinity of this band in the mixtures with large Ar fraction.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of singlet oxygen concentrations in a fast flow dc discharge in oxygen–argon mixtures

Shepelenko¹,

Mikheyev²,

Voronov³

et al. 2008

J. Phys. D: Appl. Phys.

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Production of singlet delta oxygen (SO) by a dc glow discharge in flowing O2 : Ar mixtures has been investigated. SO concentrations have been measured with dilution of oxygen up to O2 : Ar = 5 : 95 at a pressure up to 14 Torr and specific power load in the discharge up to 50 J mmol−1. The largest relative SO concentrations achieved in experiments exceeded 9%. This is sufficient to obtain population inversion and laser gain in the oxygen–iodine medium.It was found that for the mixtures with large Ar content stray spectral lines appear near the SO 1268 nm band that is used to determine the SO concentration. These are the Ar I lines and their intensities increase relative to the SO band with Ar content. To estimate their contribution it is suggested to normalize their intensities on the intensity of the 1280 nm line.

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Section: Introductionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Measurement of singlet oxygen concentrations in a fast flow dc discharge in oxygen–argon mixtures

Shepelenko¹,

Mikheyev²,

Voronov³

et al. 2008

J. Phys. D: Appl. Phys.

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“…A significant increase in 02(a) yield may be achieved by selectively deactivating 02(b) to 02(a). Small concentrations of organics added to the flow have been shown to increase 02(a) emission at the expense of 02(b) [Mikheyev, 1999].…”

Section: Experiments With Double Microwave Discharge At Afit 2221 mentioning

confidence: 99%

Multi-Disciplinary Research for High Energy Chemical Lasers, Closed-Cycle ElectricOIL Technology

Solomon¹

2007

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Discharge production of the singlet delta oxygen for an iodine laser

Napartovich

Deryugin

Кочетов

2001

J. Phys. D: Appl. Phys.

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The properties and kinetics of singlet delta oxygen (SDO) metastables in discharge plasma, which are important for the development of the discharge excited oxygen-iodine laser, are discussed. A short description is given of available experimental activity in the development of SDO generators. Specific requirements to the SDO discharge generator are reported. The capability of different kinds of discharge to meet these requirements is evaluated. Issues are discussed which are important for the study of SDO kinetics in more detail, including processes involving individual electronic-vibrational states.

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Exited oxygen in glow discharge afterglow

Cited by 4 publications

References 0 publications

Measurement of singlet oxygen concentrations in a fast flow dc discharge in oxygen–argon mixtures

Measurement of singlet oxygen concentrations in a fast flow dc discharge in oxygen–argon mixtures

Multi-Disciplinary Research for High Energy Chemical Lasers, Closed-Cycle ElectricOIL Technology

Discharge production of the singlet delta oxygen for an iodine laser

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