Source: wikibot/cosmic-ray-spallation
= Cosmic ray spallation
{wiki=Cosmic_ray_spallation}
Cosmic ray spallation is a process that occurs when high-energy cosmic rays—mainly protons and atomic nuclei—collide with matter, such as the nuclei of atoms in interstellar gas and dust. This interaction can produce secondary particles and isotopes through a nuclear reaction where the target nucleus is struck by the energetic cosmic rays.