Pulsed electron-beam-sustained discharge in oxygen-containing gas mixtures: electrical characteristics, spectroscopy,and singlet oxygen yield

Vagin, N. P.; Ионин, А. А.; Klimachev, Yu. M.; Kotkov, A. A.; Кочетов, И. В.; Napartovich, Anatoly P.; Podmar’kov, Yu P; Селезнев, Л. В.; Sinitsyn, D. V.; Фролов, М П; Hager, Gordon D.; Yuryshev, Nikolai N

doi:10.1070/qe2004v034n09abeh002883

Cited by 10 publications

(4 citation statements)

References 2 publications

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“…The possibility of lasing on CO molecule transitions in oxygen rich gas mixture was shown in paper [17]. Later on we found that the efficiency of such a laser could exceed efficiency of a CO laser with nitrogen containing gas mixtures.…”

Section: Ebsd Co Lasing In Oxygen Rich Gas Mixturesmentioning

confidence: 95%

“…It exceeds 1.6 times the output efficiency of the CO laser (30 %) operating on CO:N 2 :Ar mixture, the ratio for output efficiencies of the CO laser employing oxygen and nitrogen mixtures coming up to 2.5 at Q loc = 70 J⋅l -1 ⋅Amagat -1 . The reduction of output efficiency for the laser operating on CO:О 2 :Ar mixture at local specific input energies Q loc > 110 J⋅l -1 ⋅Amagat -1 can be connected with gas heating [25] and excitation of electronic levels of oxygen molecules [17].…”

Section: Ebsd Co Lasing In Oxygen Rich Gas Mixturesmentioning

confidence: 99%

“…Our interest in studying EBSD CO laser AM with oxygen rich mixtures is connected with both research of singlet delta oxygen production in EBSD stabilized by adding of small amount of CO molecules [17] and with research of intermolecular VV exchange between CO and O 2 molecules [18,19]. It was shown in [19] that the SSG value on low vibrational transitions (V<15) in gas mixture CO:О 2 =1:20 was two times higher than in mixture CO:N 2 =1:20.…”

Section: Introductionmentioning

confidence: 99%

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Pulsed CO laser and laser amplifier operating on oxygen containing gas mixtures

Ионин

Klimachev

Kotkov

et al. 2006

XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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Temporal behavior of small signal gain in pulsed CO laser amplifier operating with oxygen rich gas mixtures CO:He:O 2 and CO:N 2 :O 2 was experimentally studied. The rich content of oxygen in helium mixture (CO:He:O 2 =1:4:2) resulted in ~8-fold increase of the maximum gain on low vibrational transitions (10→9) and strong absorption on high ones (21→20). A high efficient pulsed CO laser operating with gas mixture in which oxygen substituted for nitrogen was launched.

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Section: Ebsd Co Lasing In Oxygen Rich Gas Mixturesmentioning

confidence: 95%

Section: Ebsd Co Lasing In Oxygen Rich Gas Mixturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pulsed CO laser and laser amplifier operating on oxygen containing gas mixtures

Ионин

Klimachev

Kotkov

et al. 2006

XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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“…So far, high-pressure, non-self-sustained discharges operating in short duration pulsed mode seemed to be the most attractive option for generating stable discharges at high pressure. Different kinds of non-self sustained discharges have been extensively investigated for O 2 (a 1 ∆ g ) production: i) the e-beam sustained discharges [14,17,21], ii) the crossed spiker-sustainer discharges [22,23], and iii) the controlled avalanche method [24]. However, we have recently demonstrated [25] that the so-called micro-cathode sustained discharge (MCSD), operating in DC mode, can also be used to produce large amounts of O 2 (a 1 ∆ g ).…”

Section: Introductionmentioning

confidence: 99%

Atmospheric pressure generation of O₂(a¹Δ_g) by microplasmas

Sousa

Bauville

Lacour

et al. 2009

Eur. Phys. J. Appl. Phys.

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The generation of singlet oxygen states (O 2 (a 1 ∆ g)) by microplasmas has been studied experimentally. In the present paper, it is shown that micro-cathode sustained discharges (MCSD's) can be used to produce high fluxes of O 2 (a 1 ∆ g) at atmospheric pressure. In He/O 2 /NO mixtures, O 2 (a 1 ∆ g) number densities higher than 10 16 cm-3 can be generated by this 3-electrode configuration and transported over distances of some tens of cm. In fact, at total flow rates up to 30 ln/min, O 2 (a 1 ∆ g) fluxes above 10 mmol/h were measured in the MCSD afterglow, at 26 cm downstream. As a result, MCSD's appear to be very efficient and suitable tools for the continuous production of large amounts of O 2 (a 1 ∆ g) at atmospheric pressure, which could give rise to a wide range of new applications, namely biological. The effect of different parameters such as gas flows and mixtures, and discharge current are discussed in the paper.

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