Electron Temperature Dependence of Recombination of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><

Mehr, F. J.; Biondi,

doi:10.1103/physrev.181.264

Cited by 342 publications

(85 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The production rates from Mehr and Biondi (1969) and Peverall et al (2001) are displayed in Fig. 7 for typical electron temperatures in the Martian upper atmosphere between 300 and 5000 K. There is a systematic difference of 20% below 1200 K and a good agreement for electron temperature larger than 3000 K.…”

Section: At a 60mentioning

confidence: 85%

Modeling of Venus, Mars, and Titan

Kallio

Chaufray

Modolo

et al. 2011

Space Sciences Series of ISSI

View full text Add to dashboard Cite

Increased computer capacity has made it possible to model the global plasma and neutral dynamics near Venus, Mars and Saturn's moon Titan. The plasma interactions at Venus, Mars, and Titan are similar because each possess a substantial atmosphere but lacks a global internally generated magnetic field. In this article three self-consistent plasma models are described: the magnetohydrodynamic (MHD) model, the hybrid model and the fully kinetic plasma model. are also described. In particular, we describe the pros and cons of each model approach. Results from simulations are presented to demonstrate the ability of the models to capture the known plasma and neutral dynamics near the three objects.

show abstract

Section: At a 60mentioning

confidence: 85%

Modeling of Venus, Mars, and Titan

Kallio

Chaufray

Modolo

et al. 2011

Space Sciences Series of ISSI

View full text Add to dashboard Cite

show abstract

“…From the signal difference between the detector output with the plasma on and with the plasma turned off, the phase difference was calculated. The plasma density was calculated consecutively using equation (5). It should be noted that this equation is valid only for low plasma densities, where the plasma frequency is much lower than the angular frequency ω p ω [3].…”

Section: Methods Of Measurementmentioning

confidence: 99%

“…The curves refer to a dielectric wire of relative permittivity 2.1 (corresponding to Teflon) surrounded by a plasma of relative permittivity ε r−out = 0.95, 0.75, 0. 5 For the larger diameters, the phase velocity of the wave is independent of the outside environment, and therefore the dielectric waveguide can be used for a transfer of the microwave signal in the probe arm of microwave interferometer even through the plasma with no perturbation of the phase due to the plasma.…”

Section: Plasma Generationmentioning

confidence: 99%

Electron density measurements in afterglow of high power pulsed microwave discharge

Meško

Bonaventura

Vašina

et al. 2004

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The reported laboratory values [3][4][5][6][7][8][9][10][11][12][13] range from 1.7•10 Ϫ7 to 2.4•10 Ϫ7 cm 3 s Ϫ1 at 300 K. The commonly used value for ground-state oxygen ions at 300 K is 1.95•10 Ϫ7 cm 3 s Ϫ1 . In general, the temperature dependence of the thermal rate coefficient is reported to follow ␣(O 2 ϩ )ϳT Ϫ0.7 with T pertaining mainly to the electron temperature.…”

Section: Introductionmentioning

confidence: 99%

Vibrationally resolved rate coefficients and branching fractions in the dissociative recombination of O2+

Petrignani

Zande

Cosby

et al. 2004

The Journal of Chemical Physics

View full text Add to dashboard Cite

We have studied the dissociative recombination of the first three vibrational levels of O 2 ϩ in its electronic ground X 2 ⌸ g state. Absolute rate coefficients, cross sections, quantum yields and branching fractions have been determined in a merged-beam experiment in the heavy-ion storage ring, CRYRING, employing fragment imaging for the reaction dynamics. We present the absolute total rate coefficients as function of collision energies up to 0.4 eV for five different vibrational populations of the ion beam, as well as the partial ͑vibrationally resolved͒ rate coefficients and the branching fractions near 0 eV collision energy for the vibrational levels vϭ0, 1, and 2. The vibrational populations used were produced in a modified electron impact ion source, which has been calibrated using Cs-O 2 ϩ dissociative charge transfer reactions. The measurements indicate that at low collision energies, the total rate coefficient is weakly dependent on the vibrational excitation. The calculated thermal rate coefficient at 300 K decreases upon vibrational excitation. The partial rate coefficients as well as the partial branching fractions are found to be strongly dependent on the vibrational level. The partial rate coefficient is the fastest for vϭ0 and goes down by a factor of two or more for vϭ1 and 2. The O( 1 S) quantum yield, linked to the green airglow, increases strongly upon increasing vibrational level. The effects of the dissociative recombination reactions and super elastic collisions on the vibrational populations are discussed.

show abstract

Electron Temperature Dependence of Recombination ofO2+andN2<

Cited by 342 publications

References 20 publications

Modeling of Venus, Mars, and Titan

Modeling of Venus, Mars, and Titan

Electron density measurements in afterglow of high power pulsed microwave discharge

Vibrationally resolved rate coefficients and branching fractions in the dissociative recombination of O2+

Contact Info

Product

Resources

About