Electron beam induced radioactivity?

A betatron is a cyclotron developed by Donald Kerst at the University of Illinois in 1940 to accelerate electrons. The betatron is essentially a transformer with a torus-shaped vacuum tube as its secondary coil. An alternating current in the primary coils accelerates electrons in the vacuum around a circular path. Betatrons were historically employed in particle physics experiments to provide high energy beams of electrons—up to about 300 MeV. My question is whether 300 MeV electrons would induce radioactivity in a target, and if so would it be a radioactive isotope of that target or an entirely new element altogether?