What type of particles does particle radiation consist of?

Particle radiation specifically consists of particles that have mass and can interact with matter. This category primarily includes alpha particles, beta particles, and neutrons.

Alpha particles are composed of two protons and two neutrons, making them relatively heavy and positively charged. They are emitted from the nucleus of heavy atoms during radioactive decay. Beta particles are electrons or positrons that are released during the decay process of certain nuclei; they have a much smaller mass compared to alpha particles. Neutrons, which have no charge, can also be emitted during nuclear reactions or decay processes, contributing to particle radiation as well.

The other options include entities that either do not qualify as particle radiation or are incorrect due to their composition. For instance, photons are massless particles associated with electromagnetic radiation, and while neutrons are indeed a part of particle radiation, combining them with photons does not fit the definition of particle radiation.