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Summary: A&A 419, 793799 (2004)
DOI: 10.1051/0004-6361:20034513
c ESO 2004
Astronomy
&
Astrophysics
Ion heating in an auroral potential structure
A. Anastasiadis1, I. A. Daglis1, and C. Tsironis2
1
National Observatory of Athens, Institute for Space Applications and Remote Sensing, 15236 Penteli, Greece
e-mail: daglis@space.noa.gr
2
Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
e-mail: ctsironis@astro.auth.gr
Received 15 October 2003 / Accepted 26 February 2004
Abstract. We investigate the interaction of O+
ions with a one-dimensional potential well, using Hamiltonian formulation.
Heating of plasma originating in the terrestrial ionosphere plays a catalytic role in solar-driven magnetic storms, which dis-
sipate energy globally within the magnetosphere of the earth. An interesting candidate for ionospheric plasma heating is a
potential well located at auroral arcs in the high-latitude magnetosphere. We consider a potential with an exponential form,
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