WHAT are y'all talking about? "beta particles" "emp"?
He's not making much sense. Beta particles are high energy electrons. The two names, electron and beta particle (originally beta ray) arose because physicists did not originally know they were the same thing, or even a particle in the case of beta. Beta particle is usually used when the electron originates in some nuclear process, such as decay one type of atom (nucleus) into another. In that case a neutron is converted to a proton.
EMP is ElectroMagnetic Pulse. The term was originally used in conjunction with the pulse produced by a nuclear explosion, but now EMP can be produced by specially designed devices energized with conventional explosives. EMP can scramble computers, and "fry" the front end of electronics, such as radios, radar, TV, etc. Beta particles, unless very energetic, are stopped by your skin.