Non-equilibrium kinetics in N<sub>2</sub>discharges and post-discharges: a full picture by modelling and impact on the applications

Loureiro, J.; Guerra, Vasco; Sá, Paulo; Pintassilgo, C. D.; Silva, M. Lino da

doi:10.1088/0963-0252/20/2/024007

Cited by 31 publications

(29 citation statements)

References 74 publications

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“…Problems arise when electronically and vibrationally excited states exchange their energy in a series of new processes, whose role is still to be understood, despite the numerous important kinetics contributions given by the Lisbon group …”

Section: Resultsmentioning

confidence: 99%

Coupling of Plasma Chemistry, Vibrational Kinetics, Collisional‐Radiative Models and Electron Energy Distribution Function Under Non‐Equilibrium Conditions

Capitelli

Colonna

D’Ammando

et al. 2016

Plasma Processes & Polymers

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The coupling between the electron energy distribution function (eedf) and the kinetics of vibrationally and electronically excited states is discussed. The first case study concerns the role of heterogeneous recombination in affecting the concentration of atomic hydrogen in RF plasmas, with consequences on eedf and negative ion formation. The coupling of eedf and a collisional‐radiative model for atomic hydrogen is discussed for optically thin and thick plasmas, finding large differences in the creation of eedf plateaux. The last case study deals with a self‐consistent coupling of eedf and kinetics of vibrationally and electronically excited states in CO2 cold plasmas emphasizing the role of pure vibrational mechanisms in the dissociation of CO2.

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Section: Resultsmentioning

confidence: 99%

Coupling of Plasma Chemistry, Vibrational Kinetics, Collisional‐Radiative Models and Electron Energy Distribution Function Under Non‐Equilibrium Conditions

Capitelli

Colonna

D’Ammando

et al. 2016

Plasma Processes & Polymers

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“…The contribution of N 2 (A) to the NO production has been verified by laboratory evidences (Loureiro et al, 2011;Pintassilgo et al, 2009). The NO production form N 2 (A) is through a channel of the reaction between N 2 (A) and the ground state atomic oxygen…”

Section: Discussionmentioning

confidence: 73%

A Numerical Study of the Thermospheric Overcooling During the Recovery Phases of the October 2003 Storms

Chen

Lei

2018

JGR Space Physics

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Previous studies showed that the density overcooling in the thermosphere during the recovery phases of the October 2003 storms was not reproduced by the National Center for Atmospheric Research Thermosphere‐Ionosphere Electrodynamics General Circulation Model. In this study, a series of controlled numerical experiments were carried out to explore the processes responsible for the neutral density overcooling. It was found that the simulation with the temperature‐dependent reaction rate of N(2D) + O2 from Duff et al. (2003, https://doi.org/10.1029/2002GL016720) can better capture the overcooling during the recovery phases of the October 2003 storms. Our study also demonstrated that the thermosphere recovery strongly depends on the altitudinal distribution of NO emission per mass rather than the NO cooling flux alone. During the storm recovery phases, the temperature starts to show overcooling in 110–180 km where the NO increases primarily, which has great contribution to the density overcooling.

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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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Non-equilibrium kinetics in N₂discharges and post-discharges: a full picture by modelling and impact on the applications

Cited by 31 publications

References 74 publications

Coupling of Plasma Chemistry, Vibrational Kinetics, Collisional‐Radiative Models and Electron Energy Distribution Function Under Non‐Equilibrium Conditions

Coupling of Plasma Chemistry, Vibrational Kinetics, Collisional‐Radiative Models and Electron Energy Distribution Function Under Non‐Equilibrium Conditions

A Numerical Study of the Thermospheric Overcooling During the Recovery Phases of the October 2003 Storms

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

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Non-equilibrium kinetics in N2discharges and post-discharges: a full picture by modelling and impact on the applications

Cited by 31 publications

References 74 publications

Coupling of Plasma Chemistry, Vibrational Kinetics, Collisional‐Radiative Models and Electron Energy Distribution Function Under Non‐Equilibrium Conditions

Coupling of Plasma Chemistry, Vibrational Kinetics, Collisional‐Radiative Models and Electron Energy Distribution Function Under Non‐Equilibrium Conditions

A Numerical Study of the Thermospheric Overcooling During the Recovery Phases of the October 2003 Storms

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

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Non-equilibrium kinetics in N₂discharges and post-discharges: a full picture by modelling and impact on the applications