NO and NO2 production in pulsed low pressure dc discharge

Rousseau, Antoine; Gatilova, L.; Röpcke, J.; Meshchanov, A. V.; Ionikh, Yu. Z.

doi:10.1063/1.1935046

Cited by 18 publications

(30 citation statements)

References 14 publications

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“…According to Rousseau et al NO and NO 2 generation depends “only on the duty cycle ratio” [23]. The Duty Cycle Ratio (DCR) is defined as the ratio of the pulse duration to the pulse period.…”

Section: Resultsmentioning

confidence: 99%

Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

Shimizu

Kuwabara

Blajan

2012

Sensors

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Decomposition of formaldehyde (HCHO) by a microplasma reactor in order to improve Indoor Air Quality (IAQ) was achieved. HCHO was removed from air using one pass through reactor treatment (5 L/min). From an initial concentration of HCHO of 0.7 ppm about 96% was removed in one pass treatment using a discharge power of 0.3 W provided by a high voltage amplifier and a Marx Generator with MOSFET switches as pulsed power supplies. Moreover microplasma driven by the Marx Generator did not generate NOx as detected by a chemiluminescence NOx analyzer. In the case of large volume treatment the removal ratio of HCHO (initial concentration: 0.5 ppm) after 60 minutes was 51% at 1.2 kV when using HV amplifier considering also a 41% natural decay ratio of HCHO. The removal ratio was 54% at 1.2 kV when a Marx Generator energized the electrodes with a 44% natural decay ratio after 60 minutes of treatment.

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Section: Resultsmentioning

confidence: 99%

Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

Shimizu

Kuwabara

Blajan

2012

Sensors

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“…Furthermore, the electronically excited state of nitrogen, N 2 (A), has been recognized in the recent decades as a significant contributor to thermospheric NO production through owing to its long radiative lifetime in the low‐pressure environment in the thermosphere (Gatilova et al, ; Guerra et al, ; Ionikh et al, ; Kutasi et al, ; Loureiro et al, ; Ono & Oda, ; Pintassilgo et al, ; Rousseau et al, ).

N_{2} ((), A) + normalO ((), {}^{3}{normalP}) \to NO + normalN ((), {}^{2}{normalD})

…”

Section: No Chemistry In the Thermospherementioning

confidence: 99%

“…An important update to the NO photochemistry here is the inclusion of the electronically excited state of nitrogen, N 2 (A), as an additional source of NO (Gatilova et al, 2007;Guerra et al, 2001;Ionikh et al, 2006;Kutasi et al, 2007;Loureiro et al, 2011;Ono & Oda, 2002;Pintassilgo et al, 2009;Rousseau et al, 2005), implemented as suggested by Yonker (2013). An in-depth discussion of our current understanding of NO photochemistry in the context of a 1-D model can be found in Yonker (2013).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Thermospheric Nitric Oxide Emission Observations and the GITM Simulations: Sensitivity to Solar and Geomagnetic Activities

et al. 2018

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An accurate estimate of the energy budget (heating and cooling) of the ionosphere and thermosphere, especially during space weather events, has been a challenge. The abundance of nitric oxide (NO), a minor species in the thermosphere, is an important component of energy balance here because its production comes from energy sources able to break the strong bond of molecular nitrogen, and infrared emissions from NO play an important role in thermospheric cooling. Recent studies have significantly improved our understanding of NO chemistry and its relationship to energy deposition in the thermospheric photochemical reactions. In this study, the chemical scheme in the Global Ionosphere‐Thermosphere Model (GITM) is updated to better predict the lower thermospheric NO responses to solar and geomagnetic activity. We investigate the sensitivity of the 5.3‐μm NO emission to F10.7 and Ap indices by comparing the global integrated emission from GITM with an empirical proxy derived from the Sounding of the Atmosphere using Broadband Emission Radiometry measurements. GITM's total emission agrees well within ±20% of the empirical values. The updated chemistry scheme significantly elevates the level of integrated emission compared to the previous scheme. The inclusion of N2(A)‐related production of NO contributes an additional 5–25% to the emission. Localized enhancement of ~70% in column density and a factor of 3 in column emission are simulated at a moderate geomagnetic level.

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“…The existence of a nitric oxide (NO) channel from the reaction of N 2 ( A ) with ground state atomic oxygen O ( 3 P ) has been repeatedly invoked to explain the NO present in the postdischarge region of a laboratory N 2 /O 2 plasma (Gatilova et al, ; Guerra et al, ; Ionikh et al, ; Kutasi et al, ; Loureiro et al, ; Ono & Oda, ; Pintassilgo et al, ; Rousseau et al, ). As a primary thermospheric cooling mechanism (Mlynczak et al, ), ozone destroyer (Randall et al, ), and ionospheric component (Nicolet, ), a new source of NO, if significant, will have important consequences for many upper atmospheric processes.…”

Section: Introductionmentioning

confidence: 99%

N₂(A) in the Terrestrial Thermosphere

Yonker

Bailey

2020

JGR Space Physics

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Recent work has indicated the presence of a nitric oxide (NO) product channel in the reaction between the higher vibrational levels of the first electronically excited state of molecular nitrogen, N 2 (A 3 Σ + u ), and atomic oxygen. A steady-state model for the N 2 (A) vibrational distribution in the terrestrial thermosphere is here described and validated by comparison with N 2 A-X, Vegard-Kaplan dayglow spectra from the Ionospheric Spectroscopy and Atmospheric Chemistry spectrograph. A computationally cheaper method is needed for implementation of the N 2 (A) chemistry into time-dependent thermospheric models. It is shown that by scaling the photoelectron impact production of ionized N 2 by a Gaussian centered near 100 km, the level-specific N 2 (A) production rates between 100 and 200 km can be reproduced to within an average of 5%. This scaling, and thus the N 2 electron impact ionization/excitation ratio, is nearly independent of existing uncertainties in the 2-20 nm solar soft X-ray irradiance. To investigate this independence, the N 2 electron-impact excitation cross sections in the GLOW photoelectron model are replaced with the results of Johnson et al. (2005, https://doi.org/10.1029/2005JA011295) and the multipart work of Malone et al. (2009 https://doi.org/10.1103/PhysRevA.79.032704) (Malone, Johnson, Young, et al., 2009, https://doi.org/10.1088/0953-4075/42/22/225202; Malone, Johnson, Kanik, et al., 2009, https://doi. org/10.1103/PhysRevA.79.032705; Malone et al., 2009, https://doi.org/10.1103/PhysRevA.79. 032704), together denoted J05M09. Upon updating these cross sections it is found that (1) the total N 2 triplet excitation rate remains nearly constant; (2) the steady state N 2 (A) vibrational distribution is shifted to higher levels; (3) the total N 2 singlet excitation rate responsible for the Lyman-Birge-Hopfield emission is reduced by 33%. It is argued that adopting the J05M09 cross sections supports (1) the larger X-ray fluxes measured by the Student Nitric Oxide Explorer (SNOE) and (2) a temperature-independent N 2 (A)+O reaction rate coefficient. Plain Language Summary Plain Language Summary Theoretical modeling of nitric oxide(NO) in the thermosphere has historically been underestimated in comparison with measurements. A new chemical source of NO has been proposed, but to accurately incorporate it into existing models requires a fast way of calculating the electronic and vibrational temperature of the reacting nitrogen gas. It is shown in this work that this can be done by using the N 2 ionization rate as a proxy and that this has the added benefit of being independent of existing unknowns regarding the solar flux at X-ray wavelengths. These results are further discussed in light of recent measurements by the atomic and molecular physics community concerning standard thermospheric diagnostic emissions, particularly the N 2 Lyman-Birge-Hopfield emission. Use of these new cross sections in thermospheric models is found to have significant implications for our understanding of the energy budge...

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NO and NO2 production in pulsed low pressure dc discharge

Cited by 18 publications

References 14 publications

Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

Comparison of the Thermospheric Nitric Oxide Emission Observations and the GITM Simulations: Sensitivity to Solar and Geomagnetic Activities

N₂(A) in the Terrestrial Thermosphere

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NO and NO2 production in pulsed low pressure dc discharge

Cited by 18 publications

References 14 publications

Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

Study on Decomposition of Indoor Air Contaminants by Pulsed Atmospheric Microplasma

Comparison of the Thermospheric Nitric Oxide Emission Observations and the GITM Simulations: Sensitivity to Solar and Geomagnetic Activities

N2(A) in the Terrestrial Thermosphere

Contact Info

Product

Resources

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N₂(A) in the Terrestrial Thermosphere