Molecular Ions in Ion Upflows and their Effect on Hot Atomic Oxygen Production

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dc.contributor.advisorYau, Andrew W.
dc.contributor.authorFoss, Victoria
dc.contributor.committeememberCully, Christopher M.
dc.contributor.committeememberWieser, Michael E.
dc.date2019-06
dc.date.accessioned2019-01-28T15:54:21Z
dc.date.available2019-01-28T15:54:21Z
dc.date.issued2019-01-25
dc.description.abstractWe present results from the Imaging and Rapid Scanning Mass Spectrometer (IRM) on board the Enhanced Polar Outflow Probe (e-POP), on the occurrence morphology and frequency of molecular ions in the topside ionosphere. Molecular ions are observed at all e-POP altitudes at high latitudes, in much greater abundances than predicted by empirical models of the ionosphere, during both active and quiet times. Large count rate events occur in greater frequency in the pre-midnight sector (20-22 magnetic local time (MLT)). These large count rate events also show a correlation to the main and recovery phases of large geomagnetic storms. Molecular NO+ and O2+ ions can undergo dissociative recombination with electrons to produce non-thermal oxygen atoms, which disturb the local equilibrium and increase satellite drag in low Earth orbit (LEO). We simulate this production with the linearized Boltzmann equation using both the International Reference Ionosphere (IRI) and augmented models based on IRM observations. It is found that NO+ concentrations of 10% result in an apparent hot temperature of 0.19 eV, or 0.3 eV in the case of O2+. We discuss the significance of these results as well as their implications on magnetosphere-ionosphere-thermosphere (MIT) coupling.en_US
dc.identifier.citationFoss, V. (2019). Molecular Ions in Ion Upflows and their Effect on Hot Atomic Oxygen Production (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/36114
dc.identifier.urihttp://hdl.handle.net/1880/109857
dc.language.isoenen_US
dc.publisher.facultyScienceen_US
dc.publisher.institutionUniversity of Calgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectionosphereen_US
dc.subjectaeronomyen_US
dc.subject.classificationPhysicsen_US
dc.titleMolecular Ions in Ion Upflows and their Effect on Hot Atomic Oxygen Productionen_US
dc.typemaster thesisen_US
thesis.degree.disciplinePhysics & Astronomyen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrue
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