Date of Award
Master of Science
Department of Engineering Physics
Daniel J. Emmons, PhD
Previous studies have investigated the He/H elemental abundance ratios of Solar Energetic Particle (SEP) Events of energies above 4 MeV. Also, studies have investigated the correlations between SEPs, Coronal Mass Ejections (CME), and Solar Flares. This work finds the correlations between the >4 MeV He/H abundance ratios and the solar parameters from the SEP, CME, and solar flare associated with the abundance increases. 43 SEP events located at solar west longitude are analyzed to find the correlation coefficients. Highly significant correlation was found between the He/H abundance ratios and the following parameters: solar flare flux, solar flare fluence, CME linear speed, and SEP peak intensity. No correlation was found between the He/H abundance ratios and the following parameters: solar longitude, CME width, CME mass, and solar flare duration
DTIC Accession Number
Davidson, Christopher R., "Relationship between Solar Energetic Particle He/H Abundance Ratios and Properties of Flares and CMES" (2021). Theses and Dissertations. 5077.