{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/117618"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/117618","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The role of N+ in the decay of the ring current during geomagnetic storms by means of charge exchange interactions","abstract":"Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01","abstract_html":"Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01","abstract_has_math":false,"creators":["Zhang, Chi"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Ilie, Raluca"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-12","date_published":"2022-12","updated_at":"2026-07-22T22:24:56Z","subjects":["Nitrogen ion","charge exchange interactions","ring current","geomagnetic storms"],"languages":["en","eng"],"rights":["Copyright 2022 Chi Zhang"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/117618","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ilie, Raluca"]},{"key":"dc:creator","label":"Author","values":["Zhang, Chi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-12","2022-07-26"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Nitrogen ion","charge exchange interactions","ring current","geomagnetic storms"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2022 Chi Zhang"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/117618"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01","The student, Chi Zhang, accepted the attached license on 2022-07-22 at 18:10.","The student, Chi Zhang, submitted this Thesis for approval on 2022-07-22 at 18:16.","This Thesis was approved for publication on 2022-07-26 at 11:13.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18433 on 2023-04-12 at 08:09:56","Ring current enhancement during geomagnetic storms will greatly affect the systems and technologies on the ground and in the near space of the earth. The effect of N+ in the evolution of the ring current has not been paid much attention due to the fact that most ring current detection instruments could not distinguish N+ from O+, and all of N+ was regarded as O+. This study focuses on the differences between the behavior of N+ and O+ in the charge exchange interaction, the dominant mechanism during the decay phase of the ring current. In addition to their mass difference, N+ and O+ have different charge exchange interaction cross-sections across the energy level of the ring current. Hot Ion Electron Drift Integrator, a model that solves the bounce-averaged Boltzmann equation, is used to calculate the distribution function of all ring current ions under six different geocorona models. The simulation takes an input of an artificial storm condition which is created based on a real storm condition. Three N+ compositions: 0%, 50%, and 100% are simulated for Hodges [1994] and Rairden et al. [1986] models to examine the effect of the N+ on the dynamics of the ring current. The results show that N+ has a shorter lifetime than O+ given the same conditions, and thus leads to a faster decay rate of the ring current than O+ does."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["The role of N+ in the decay of the ring current during geomagnetic storms by means of charge exchange interactions"]}]}],"canonical_facts":{"dc:contributor":["Ilie, Raluca"],"dc:creator":["Zhang, Chi"],"dc:date":["2022-12","2022-07-26"],"dc:description":["Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-12-01","The student, Chi Zhang, accepted the attached license on 2022-07-22 at 18:10.","The student, Chi Zhang, submitted this Thesis for approval on 2022-07-22 at 18:16.","This Thesis was approved for publication on 2022-07-26 at 11:13.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18433 on 2023-04-12 at 08:09:56","Ring current enhancement during geomagnetic storms will greatly affect the systems and technologies on the ground and in the near space of the earth. The effect of N+ in the evolution of the ring current has not been paid much attention due to the fact that most ring current detection instruments could not distinguish N+ from O+, and all of N+ was regarded as O+. This study focuses on the differences between the behavior of N+ and O+ in the charge exchange interaction, the dominant mechanism during the decay phase of the ring current. In addition to their mass difference, N+ and O+ have different charge exchange interaction cross-sections across the energy level of the ring current. Hot Ion Electron Drift Integrator, a model that solves the bounce-averaged Boltzmann equation, is used to calculate the distribution function of all ring current ions under six different geocorona models. The simulation takes an input of an artificial storm condition which is created based on a real storm condition. Three N+ compositions: 0%, 50%, and 100% are simulated for Hodges [1994] and Rairden et al. [1986] models to examine the effect of the N+ on the dynamics of the ring current. The results show that N+ has a shorter lifetime than O+ given the same conditions, and thus leads to a faster decay rate of the ring current than O+ does."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/117618"],"dc:language":["en","eng"],"dc:rights":["Copyright 2022 Chi Zhang"],"dc:subject":["Nitrogen ion","charge exchange interactions","ring current","geomagnetic storms"],"dc:title":["The role of N+ in the decay of the ring current during geomagnetic storms by means of charge exchange interactions"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:56Z"}