Dependence of Heavy Element Abundances on First Ionization Potential in Small Solar Particle Events

Details Dependence of Heavy Element Abundances on First Ionization Potential in Small Solar Particle Events Dependence of Heavy Element Abundances on First Ionization Potential in Small Solar Particle Events

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh42a0774s&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH42A-0774

Physics

2114 Energetic Particles, Heliospheric (7514), 7513 Coronal Mass Ejections, 7514 Energetic Particles (2114), 7519 Flares

Scientific paper

Using the Solar Isotope Spectrometer on the Advanced Composition Explorer, we have measured the ~10--20~MeV/nucleon heavy (Z>=6) element abundances of ~30 small solar energetic particle (SEP) events which occurred between 3~April 1998 and the present. Average ~10--20~MeV/nucleon O fluxes during the small events were between 6x10-7 and 7x10-6 (s~sr~cm2~MeV/nuc)-1. We have classified the events according to their 4.5--5.5~MeV/nucleon 3He/4He ratios and have compared their average heavy element composition with that of past studies, obtaining good agreement. We have also examined each SEP event for a dependence of abundances relative to those of the solar photosphere on first ionization potential (FIP). We find a statistically signigicant FIP effect in virtually all of the small SEP events, including those which are 3He--rich and have heavy element abundances typical of impulsive SEP events. This research was supported by NASA at Caltech (under grant NAG5--6912), JPL, and GSFC.

Affiliated with

Also associated with

No associations

Rating

Dependence of Heavy Element Abundances on First Ionization Potential in Small Solar Particle Events does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dependence of Heavy Element Abundances on First Ionization Potential in Small Solar Particle Events, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dependence of Heavy Element Abundances on First Ionization Potential in Small Solar Particle Events will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1382261