Solar energetic particle event with 3He/4He>1

Solar Gamma Ray Lines observed during the Solar Activity of August 2 to August 11, 1972

E. L. Chupp, D. J. Forrest, P. R. Higbie et al. · Nature · 1973 · 318 citations

Terrestrial Gamma-ray Flashes, August 11, Solar Variability +10

Observation of a solar flare induced interplanetary shock and helium-enriched driver gas

J. Hirshberg, Alberta Y. Alksne, D. S. Colburn et al. · Journal of Geophysical Research Atmospheres · 1970 · 155 citations

Solar Flare, Solar Variability, Interplanetary Shock +13

Solar Wind Ion Composition

S. J. Bame, A. J. Hundhausen, J. R. Asbridge et al. · Physical Review Letters · 1968 · 145 citations

Solar Variability, Engineering, Physics +12

Apollo 11 and 12 solar wind composition experiments: Fluxes of He and Ne isotopes

J. Geiss, P. Eberhardt, F. Bühler et al. · Journal of Geophysical Research Atmospheres · 1970 · 127 citations

Engineering, Solar Terrestrial Environment, Solar Convection +7

The abundance of helium in prominences and in the chromosphere

T. Hirayama · Solar Physics · 1971 · 45 citations

Upper Atmosphere, Engineering, Physics +6