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Acceleration and Stochastic Heating of Ions Drifting Through an Auroral Arc
KTH, Superseded Departments, Alfvén Laboratory. KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
KTH, Superseded Departments, Alfvén Laboratory. KTH, School of Electrical Engineering (EES), Space and Plasma Physics.
1992 (English)In: Journal of Geophysical Research, ISSN 0148-0227, E-ISSN 2156-2202, Vol. 97, 19333-19339 p.Article in journal (Refereed) Published
Abstract [en]

We find that ions E x B drifting through an auroral arc can undergo transverse acceleration and stochastic heating. This result is very analogous to recent work regarding similar phenomena in the magnetotail (Buchner and Zelenyi, 1990; Chen and Palmadesso, 1986; Brittnacher and Whipple, 199 1). An analytic expression for the maximum arc width for which chaotic behavior is present is derived and numerically verified. We find, for example, that a 1.5-km-thick arc at LAMBDA = 65-degrees requires a minimum potential drop of 3 kV for transverse ion acceleration and heating to occur. Thicker arcs require higher potential drops for stochasticity to occur. This mechanism could be a source for conic ions.

Place, publisher, year, edition, pages
1992. Vol. 97, 19333-19339 p.
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-92882DOI: 10.1029/92JA01653OAI: oai:DiVA.org:kth-92882DiVA: diva2:514429
Note
NR 20140805Available from: 2012-04-09 Created: 2012-04-07 Last updated: 2017-12-07Bibliographically approved

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