Ionization states of helium in He-3-rich solar energetic particle eventsResults of a systematic study of the ionic charge state of helium in the energy range 0.6-1.0 MeV/nucleon for He-3-rich solar energetic particle events during the time period August 1978 to October 1979 are reported. The data have been obtained with the Max-Planck-Institut/University of Maryland experiment on ISEE-3. Whereas for solar energetic particle events with no enrichment of He-3 relative to He-4 surprisingly large abundances of singly ionized helium have been reported recently, He-3-rich solar energetic particle events do not show significant abundances of He-3(+). This result is consistent with current theories explaining large compositional anomalies by mass per charge dependent selective heating of the minor ion species.
Document ID
19850040912
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Klecker, B. (Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Hovestadt, D. (Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Moebius, E. (Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Scholer, M. (Max-Planck-Institut fuer extraterrestrische Physik Garching, Germany)
Gloeckler, G. (Max-Planck-Inst. fuer Extraterrestrische Physik Garching, Germany)
Ipavich, F. M. (Maryland, University College Park, MD, United States)