If you place protons (ionized hydrogen atoms) in a strong (vertical) magnetic field, and apply an RF
electric field in the horizontal plane (read about cyclotrons and understand equations), the protons will go around in larger and larger circles (acceleration). There will not be any neutrons (they are radioactive) unless you inject them, and even at room temperature, their rms velocity is about 2200 meters per second (derive it). What do you expect will happen and why?
Bob S