</p>

IST-Lisbon databaseclick to expand or collapse

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Data Group [CO2]: M. Grofulovic, L.L. Alves and V. Guerra ''Electron-neutral scattering cross sections for CO2: a complete and consistent set and an assessment of dissociation'' 2016 J. Phys. D: Appl. Phys. 49 395207 1-12. The set includes 17 cross sections defined up to 1 keV, and it was compiled mostly from Lowke et al with the following modifications: (i) the cross section for superelastic collisions with the first level of the bending mode was included and should be considered as part of the set (see below); (ii) the cross section for the electronic excitation at 10.5 eV and for the ionization were extended up to 1 keV and replaced by the total ionization cross section from Itikawa, respectively; (iii) the effective momentum-transfer cross section was increased below 0.1 eV and adjusted above 100 eV, to compensate for the modifications (i) and (ii); (iv) the cross sections corresponding to the excitation of (0n0)+(n00) vibrational levels were deconvoluted into separate modes, using the spectroscopic constants reported by Fridman and the works of Celiberto et al.
The cross sections were defined adopting piecewise linear interpolation; when used in a two-term Boltzmann solver they yield swarm parameters in good agreement with measurements (within 1% and 8%, depending on the parameters and E/N regions), for reduced electric fields up to 1000 Td. At low E/N, the good agreement requires considering also the (010) -> (000) superelastic transition, assuming the (010) level in Boltzmann equilibrium at gas temperature (with 0.083 eV excitation energy and statistical weight of 2; corresponding to a relative population of 0.076 at 300 K).

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e / CO2