I Impulsive flares One of two general types of solar flares.
Impulsive flares accelerate mostly electrons, with some protons.
They last for minutes or hours, and most occur near the solar equator. They happen at a rate of about 1000 per year during solar maximum. Interplanetary Between the planets in our solar system. Interplanetary Shock Particles Particles accelerated by shocks associated with solar flares and CMEs Interstellar Between the stars. They may have a charge due to some loss of electrons.