Answer:
Gamma radiation isn't deflected
Step-by-step explanation:
Hi, Rutherford characterized three types of radioactivity: Alfa, Beta and Gamma.
The principal difference is that the first two are charged particules (+ or -) but the gamma radiation comes from neutral particules.
Magnetic fields have the ability to interact with charged particules (like ions) or with ionizable elements (like the ferritic ones).
Being that said, the gamma radiation won't be deflected by the magnetic field because of its neutrality.