The particle described is an alpha particle, and we might call a stream of them alpha radiation or an alpha ray.
The type of radiation you are explaining is called Alpha radiation and an alpha particle is actually just a helium nucleus i.e. 2 protons and 2 neutrons without the electrons.
Could be an alpha particle (if there are no electrons) or helium-4 isotope (with two electrons).
gravel sized particles
silt and clay sized particles
alpha ray Stream of particles containg two neutrons is, I believe: Alpha Ray
Alpha particles are helium nuclei -- each particle is composed of two protons and two neutrons. A stream of alpha particles may be called a ray, although as it is not electromagnetic radiation that is probably inaccurate.
A stream of charged particles is called an electrical current.
The number of protons and electrons would be diffrent
alpha particle alpha ray
A load is the term for particles carried by a stream or river.
The measure of the largest particles a stream can carry is capacity.
The sun radiates huge amounts of light, and it also sends out a continuous stream of charged particles. These charged particles, which are ejected from the upper solar atmosphere, are primarily electrons and protons. And they are the primary constituents of what is called the solar wind, which is the name we give to this plasma that streams out from the sun on a continuous basis. A link can be found below to the Wikipedia post on the solar wind. More information can be found there. a constant stream of particles that are blown from all directions to the sun
... particles.... particles.... particles.... particles.