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Ion dynamics in auroral potential structures and formation of ion conic distribution

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dc.contributor.author Yang, Wei-hong
dc.date.accessioned 2017-04-27T00:21:04Z
dc.date.available 2017-04-27T00:21:04Z
dc.date.issued 1981-12
dc.identifier.uri http://hdl.handle.net/11122/7412
dc.description Thesis (M.S.) University of Alaska Fairbanks, 1981 en_US
dc.description.abstract This thesis is concerned with the problem of how the positive ions are energized by the two-dimensional potential structures along auroral field lines; these auroral potential structures are known to be responsible for accelerating electrons into the ionosphere to produce discrete auroras. A systematic numerical study of the test ion dynamics in auroral potential structures, either V-shaped or S-shaped, has been carried out. Transverse ion accelerations occur if the width of the auroral potential structure (Lx ≤ ρi). This result shows that the conic distribution of upstreaming ions observed on auroral field lines can be generated by the same potential structures which produce the thin auroral arcs (Lx ≤ ρi). This transverse acceleration mechanism operates more effectively on heavier ions, resulting in O+ ions more energetic than H+ ions as indicated by observations. en_US
dc.language.iso en_US en_US
dc.title Ion dynamics in auroral potential structures and formation of ion conic distribution en_US
dc.type Thesis en_US


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