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Published June 13, 2000 | Published
Book Section - Chapter Open

New views of solar energetic particles from the Advanced Composition Explorer

Abstract

Since its launch in August 1997, the Advanced Composition Explorer has been measuring the elemental, isotopic, and ionic charge-state composition of solar energetic particles with three new, high-resolution instruments (SEPICA, SIS, and ULEIS). These studies span the energy range from ~20 keV/nucleon to >100 MeV/nucleon, and include elements from He to Ni (2≤Z≤28). This paper reviews early highlights of these investigations and discusses the implications for theories of the origin, acceleration, and transport of solar energetic particles.

Additional Information

© 2000 American Institute of Physics. Issue Date: 13 June 2000. I am grateful to the SEPICA, SIS, and ULEIS teams for providing unpublished data and figures. I especially appreciate discussions with C. Cohen, J. Dwyer, B. Klecker, R. Leske, G. Mason, J. Mazur, E. Moebius, M. Popecki, T. von Rosenvinge, E. Stone, and M. Wiedenbeck, and technical assistance from A. Davis. This research was supported by NASA under grant NAG5-6912.

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