CDSDv: A compact database for the modeling of high-temperature <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.svg"><mml:msub><mml:mi mathvariant="monospace">CO</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math> radiation

Vargas, João; López, Bruno; Silva, M. Lino da

doi:10.1016/j.jqsrt.2020.106848

Cited by 6 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A simple way to include these processes is to apply a simplified Landau–Teller model to yield an additional set of near-resonant rates and deploy these in our model, according to the expression found in refs , , and . Finally, the radiative losses in a CO 2 gas may be modeled through the inclusion of vibrational Einstein coefficients such as those presented in ref . Although this is not as straightforward as presented here, due to the use of “extreme states” in this work, some sort of binning or lumping of radiative processes could achieve the desired outcome.…”

Section: Discussionmentioning

confidence: 99%

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO₂

2021

Self Cite

View full text Add to dashboard Cite

A heavy particle impact vibrational excitation and dissociation model for CO2 is presented. This state-to-state model is based on the forced harmonic oscillator (FHO) theory, which is more accurate than current state-of-the-art kinetic models of CO2 based on first-order perturbation theory. The first excited triplet state 3B2 of CO2, including its vibrational structure, is considered in our model, and a more consistent approach to CO2 dissociation is also proposed. The model is benchmarked against a few academic zero-dimensional (0D) cases and compared to decomposition time measurements in a shock tube. Our model is shown to have reasonable predictive capabilities, and the CO2 + O ↔ CO + O2 reaction is found to have a key influence on the dissociation dynamics of CO2 shocked flows, warranting further theoretical studies. We conclude this study with a discussion on the theoretical improvements that are still required for a more consistent analysis of the vibrational/dissociation dynamics of CO2.

show abstract

Section: Discussionmentioning

confidence: 99%

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO₂

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The near-IR to mid-IR region (roughly in the 1-5 µm range) where rovibrational transitions between heteronuclear molecules, such as CO 2 , CO, and NO, are strongly emissive. Radiation is observed in this spectral range for low-speed entries in planetary atmospheres with such gases in their composition (mostly Mars, for which the large impact of IR CO 2 radiation was recently assessed [19,67]).…”

mentioning

confidence: 99%

VUV to IR Emission Spectroscopy and Interferometry Diagnostics for the European Shock Tube for High-Enthalpy Research

Ferreira

Carvalho

Alves

et al. 2023

Sensors

View full text Add to dashboard Cite

The European Shock Tube for High-Enthalpy Research is a new state-of-the-art facility, tailored for the reproduction of spacecraft planetary entries in support of future European exploration missions, developed by an international consortium led by Instituto de Plasmas e Fusão Nuclear and funded by the European Space Agency. Deployed state-of-the-art diagnostics include vacuum-ultraviolet to ultraviolet, visible, and mid-infrared optical spectroscopy setups, and a microwave interferometry setup. This work examines the specifications and requirements for high-speed flow measurements, and discusses the design choices for the main diagnostics. The spectroscopy setup covers a spectral window between 120 and 5000 nm, and the microwave interferometer can measure electron densities up to 1.5 × 1020 electrons/m3. The main design drivers and technological choices derived from the requirements are discussed in detail herein.

show abstract

“…Furthermore, while usually good at reproducing known spectra, experience has shown that the effective Hamiltonian approach can struggle to capture all the unobserved hot bands resulting in underestimates of the opacity at higher temperatures (Chubb et al 2020). A compact version of CDSD-4000 has recently been made available (Vargas et al 2020).…”

mentioning

confidence: 99%

ExoMol line lists – XXXIX. Ro-vibrational molecular line list for CO2

Yurchenko

Mellor

Freedman

et al. 2020

Monthly Notices of the Royal Astronomical Society

107

View full text Add to dashboard Cite

A new hot line list for the main isotopologue of CO2, 12C16O2 is presented. The line list consists of almost 2.5 billion transitions between 3.5 million rotation-vibration states of CO2 in its ground electronic state, covering the wavenumber range 0–20 000 cm−1 (λ > 0.5 µm) with the upper and lower energy thresholds of 36 000 cm−1 and 16 000 cm−1, respectively. The ro-vibrational energies and wavefunctions are computed variationally using the accurate empirical potential energy surface Ames-2. The ro-vibrational transition probabilities in the form of Einstein coefficients are computed using an accurate ab initio dipole moment surface with variational program TROVE. A new implementation of TROVE which uses an exact nuclear-motion kinetic energy operator is employed. Comparisons with the existing hot line lists are presented. The line list should be useful for atmospheric retrievals of exoplanets and cool stars. The UCL-4000 line list is available from the CDS and ExoMol data bases.

show abstract

CDSDv: A compact database for the modeling of high-temperature CO2 radiation

Cited by 6 publications

References 36 publications

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO₂

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO₂

VUV to IR Emission Spectroscopy and Interferometry Diagnostics for the European Shock Tube for High-Enthalpy Research

ExoMol line lists – XXXIX. Ro-vibrational molecular line list for CO2

Contact Info

Product

Resources

About

CDSDv: A compact database for the modeling of high-temperature CO2 radiation

Cited by 6 publications

References 36 publications

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO2

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO2

VUV to IR Emission Spectroscopy and Interferometry Diagnostics for the European Shock Tube for High-Enthalpy Research

ExoMol line lists – XXXIX. Ro-vibrational molecular line list for CO2

Contact Info

Product

Resources

About

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO₂

Heavy Particle Impact Vibrational Excitation and Dissociation Processes in CO₂