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dc.contributor.authorSimon Wedlund, C.
dc.contributor.authorGronoff, G.
dc.contributor.authorLilensten, J.
dc.contributor.authorMenager, H.
dc.contributor.authorBarthelemy, M.
dc.date2011
dc.date.accessioned2016-03-29T12:43:53Z
dc.date.available2016-03-29T12:43:53Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/3126
dc.descriptionThe mean energy W expended in a collision of electrons with atmospheric gases is a useful parameter for fast aeronomy computations. Computing this parameter in transport kinetic models with experimental values can tell us more about the number of processes that have to be taken into account and the uncertainties of the models. We present here computations for several atmospheric gases of planetological interest (CO2, CO, N2, O2, O, CH4, H, He) using a family of multi-stream kinetic transport codes. Results for complete atmospheres for Venus, Earth, Mars, Jupiter and Titan are also shown for the first time. A simple method is derived to calculate W of gas mixtures from single-component gases and is conclusively checked against the W values of these planetary atmospheres. Discrepancies between experimental and theoretical values show where improvements can be made in the measurement of excitation and dissociation cross-sections of specific neutral species, such as CO2 and CO.
dc.languageeng
dc.titleComprehensive calculation of the energy per ion pair or W values for five major planetary upper atmospheres
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeatmospheric gas
dc.subject.freeelectron
dc.subject.freenumerical model
dc.subject.freeparameterization
dc.subject.freeplanetary atmosphere
dc.subject.freeplanetary evolution
dc.subject.freeuncertainty analysis
dc.subject.freeupper atmosphere
dc.source.titleAnnales Geophysicae
dc.source.volume29
dc.source.issue1
dc.source.page187-195
Orfeo.peerreviewedYes
dc.identifier.doi10.5194/angeo-29-187-2011
dc.identifier.scopus2-s2.0-79251494755


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