Regensburg 2007 – scientific programme
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EP: Fachverband Extraterrestrische Physik
EP 10: Poster
EP 10.16: Poster
Wednesday, March 28, 2007, 18:00–20:00, H46
Determination of absolute fluxes of rare heavy solar wind ions with ACE/SWICS — •Muharrem Köten1, Lars Berger1, Jim Raines2, Robert F. Wimmer-Schweingruber1 und Thomas H. Zurbuchen2 — 1Institut für Experimentelle und Angewandte Physik, University of Kiel, D-24098 Kiel, Germany — 2University of Michigan, Atmospheric, Oceanic, and Space Sciences 2455 Hayward St., Ann Arbor, MI 48109, USA
The Solar Wind Ion Composition Spectrometer (SWICS) on the Advanced Composition Explorer (ACE) is a linear time- of-flight mass spectrometer that allows the determination of energy, mass, and charge of solar wind ions and suprathermal particles. We developed an advanced efficiency model which calculates the probability that the instrument will detect an ion with given mass m, charge q, and velocity v→. Using the efficiency model and a new analysis technique adapted to low count rate situations (especially for rare isotopes or charge states) we present absolute fluxes of several solar wind ions in different solar wind regimes.