meaning of Alpha rays

Alpha rays meaning in General Dictionary

Rays of fairly reasonable penetrating energy emitted by radium along with other radioactive substances and proven to include absolutely charged alpha particles helium nuclei having huge velocities but tiny masses they have been slightly deflected by a powerful magnetized or electric field Compare beta ray and gamma ray Due to the fact rays penetrate just a tiny distance in thick matter such as for example living structure little pellets of radioactive substances emitting alpha rays happen familiar with cause neighborhood destruction of tissue such as cancer tumors treatment