Magnetically confined discharge CO laser

Wang, Tao; Qing-Min, Cheng

doi:10.1016/s0030-3992(01)00062-7

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…These data provide important input information into spacecraft entry models for atmospheres such as those on Mars and Venus as well as for the study of other processes in the atmospheres of these planets [1] and in comets [2]. It is also useful for understanding the processes involved in the CO laser [3,4] and to study CO plasma in the presence of an electrical discharge [5,6]. Infrared emission from CO in the upper atmospheres of Mars, Venus and several other planets is a subject of current theoretical and experimental interest.…”

Section: Introductionmentioning

confidence: 99%

Electron-impact resonant vibration excitation cross sections and rate coefficients for carbon monoxide

Laporta

Cassidy

Tennyson

et al. 2012

Plasma Sources Sci. Technol.

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Resonant vibrational and rotation-vibration excitation cross sections for electron-CO scattering are calculated in the 0-10 eV energy range for all 81 vibrational states of CO, assuming that the excitation occur via the 2 Π shape resonance. Static exchange plus polarization calculations performed using the R-matrix method are used to estimate resonance positions and widths as functions of internuclear separation. The effects of nuclear motion are considered using a local complex potential model. Good agreement is obtained with available experimental data on excitation from the vibrational ground state. Excitation rates and cross sections are provided as a functions of the initial CO vibrational state for all ground state vibrational levels.a v.laporta@ucl.ac.uk

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Section: Introductionmentioning

confidence: 99%

Electron-impact resonant vibration excitation cross sections and rate coefficients for carbon monoxide

Laporta

Cassidy

Tennyson

et al. 2012

Plasma Sources Sci. Technol.

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“…[1] Furthermore, this data proves valuable in comprehending the mechanisms underlying CO laser operations and examining CO plasma behavior amidst electrical discharges. [2,3] Theoretical and experimental exploration of infrared emissions from CO in the upper atmospheres of Mars, Venus, and other celestial bodies remains an ongoing subject of interest.…”

Section: Introductionmentioning

confidence: 99%

Low-energy inelastic electron scattering from carbon monoxide: Excitation and de-excitation of the X¹Σ⁺, a³Π, a^′3Σ⁺, A¹Π, d³Δ, e³Σ⁻, I¹Σ⁻ and D¹Δ electronic states

Wei 卫,

Huang 黄,

Cheng 程

et al. 2024

Chinese Phys. B

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Cross sections for electronic excitation and de-excitation among the ground state and lowest-lying seven electronic excited states of carbon monoxide (CO) by low-energy electron-impact are computed using R-matrix method. The excitation cross sections from the ground state to the electronic states a 3Π, a'3Σ+ and A 1Π agree with previously experimental and theoretical results. Additionally, the cross sections for I 1Σ- and D 1Δ states of CO which will cascade to CO a'3Σ+ and A 1Π states are calculated. What’s more, in contrast to the typical increase in electronic excitation cross sections with collision energy, the de-excitation cross sections show a negative trend with increasing energy.

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“…The available cross section data for electron collisions with carbon monoxide have recently been collected and reviewed by Itikawa [31]. These data are important for understanding discharges, including the CO laser [32][33][34], other CO plasmas [35] and a variety of astronomical applications [36][37][38] as CO is thought to be the second most common molecule in the Universe after H 2 .…”

Section: Introductionmentioning

confidence: 99%

Higher lying resonances in low-energy electron scattering with carbon monoxide*

Dora

Tennyson

Chakrabarti³

2016

Eur. Phys. J. D

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Abstract. R-matrix calculations on electron collisions with CO are reported whose aim is to identify any higher-lying resonances above the well-reported and lowest 2 Π resonance at about 1.6 eV. Extensive tests with respect to basis sets, target models and scattering models are performed. The final results are reported for the larger cc-pVTZ basis set using a 50 state close-coupling (CC) calculation. The BreitWigner eigenphase sum and the time-delay methods are used to detect and fit any resonances. Both these methods find a very narrow 2 Σ + symmetry Feshbach-type resonance very close to the target excitation threshold of the b 3 Σ + state which lies at 12.9 eV in the calculations. This resonance is seen in the CC calculation using cc-pVTZ basis set while a CC calculation using the cc-pVDZ basis set does not produce this feature. The electronic structure of CO − is analysed in the asymptotic region; 45 molecular states are found to correlate with states dissociating to an anion and an atom. Electronic structure calculations are used to study the behaviour of these states at large internuclear separation. Quantitative results for the total, elastic and electronic excitation cross sections are also presented. The significance of these results for models of the observed dissociative electron attachment of CO in the 10 eV region is discussed.

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Magnetically confined discharge CO laser

Cited by 8 publications

References 5 publications

Electron-impact resonant vibration excitation cross sections and rate coefficients for carbon monoxide

Electron-impact resonant vibration excitation cross sections and rate coefficients for carbon monoxide

Low-energy inelastic electron scattering from carbon monoxide: Excitation and de-excitation of the X¹Σ⁺, a³Π, a^′3Σ⁺, A¹Π, d³Δ, e³Σ⁻, I¹Σ⁻ and D¹Δ electronic states

Higher lying resonances in low-energy electron scattering with carbon monoxide*

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Magnetically confined discharge CO laser

Cited by 8 publications

References 5 publications

Electron-impact resonant vibration excitation cross sections and rate coefficients for carbon monoxide

Electron-impact resonant vibration excitation cross sections and rate coefficients for carbon monoxide

Low-energy inelastic electron scattering from carbon monoxide: Excitation and de-excitation of the X1Σ+, a3Π, a′3Σ+, A1Π, d3Δ, e3Σ−, I1Σ− and D1Δ electronic states

Higher lying resonances in low-energy electron scattering with carbon monoxide*

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Low-energy inelastic electron scattering from carbon monoxide: Excitation and de-excitation of the X¹Σ⁺, a³Π, a^′3Σ⁺, A¹Π, d³Δ, e³Σ⁻, I¹Σ⁻ and D¹Δ electronic states