EARTH SCIENCE > SUN-EARTH INTERACTIONS > SOLAR ENERGETIC PARTICLE FLUX > ALPHA PARTICLE FLUX
An alpha particle has positive charge and consists of two protons and
two neutrons (the nucleus of a helium atom). Alpha particles can cause
ionization of neutral atoms. Flux is the rate of flow through a reference
surface, measured in particles per unit area.
Porteous, A. 1996. Dictionary of Environmental Science and Technology, 2nd ed.,
John Wiley and Sons, NY.