Wiedenbeck, M. E. and Mason, G. M. and Christian, E. R. and Cohen, C. M. S. and Cummings, A. C. and Dwyer, J. R. and Gold, R. E. and Krimigis, S. M. and Leske, R. A. and Mazur, J. E. and Mewaldt, R. A. and Slocum, P. L. and Stone, E. C. and von Rosenvinge, T. T. (2003) How Common is Energetic ^3He in the Inner Heliosphere? In: Solar Wind Ten. AIP Conference Proceedings (679). American Institute of Physics , Washington, D.C., pp. 652-655. ISBN 0-7354-0148-9 http://resolver.caltech.edu/CaltechAUTHORS:20111028-100805937
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Using data from the SIS and ULEIS instruments on the Advanced Composition Explorer (ACE) we have identified periods during which energetic ^3He is present in near-Earth interplanetary space between November 1997 and May 2002. The data, which cover the energy intervals 0.2–1 MeV/nuc (ULEIS) and 4.5–16.3 MeV/nuc (SIS), show that ^3He is present a significant fraction of the time, as would be required if these suprathermal particles were the major source of the ^3He being accelerated by shocks in the interplanetary medium. Specifically, we find that energetic ^3He is present at least ~ 60% of the time, and perhaps significantly more often.
|Item Type:||Book Section|
|Additional Information:||© 2003 American Institute of Physics. Issue Date: September 2, 2003. This work was supported by the National Aeronautics and Space Administration at the California Institute of Technology and the Jet Propulsion Laboratory under grant NAG5-6912 and at the University of Maryland under grant PC 251429.|
|Group:||Space Radiation Laboratory|
|Subject Keywords:||solar wind, helium ions, acceleration, plasma shock waves|
|Classification Code:||PACS: 96.60.Vg; 96.40.Fg; 96.50.Ci|
|Official Citation:||How Common is Energetic [sup 3]He in the Inner Heliosphere? M. E. Wiedenbeck, G. M. Mason, E. R. Christian, C. M. S. Cohen, A. C. Cummings, J. R. Dwyer, R. E. Gold, S. M. Krimigis, R. A. Leske, J. E. Mazur, R. A. Mewaldt, P. L. Slocum, E. C. Stone, and T. T. von Rosenvinge, AIP Conf. Proc. 679, 652 (2003), DOI:10.1063/1.1618679|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||28 Oct 2011 18:20|
|Last Modified:||26 Dec 2012 14:20|
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