To achieve the largest deflection of alpha particles, you should consider both the energy of the alpha particles and the mass of the target particles.
- Low-energy alpha particles are less influenced by their own kinetic energy and are more susceptible to deflection by the electric field of the target particles.
- High mass-number particles exert a stronger attractive or repulsive force on alpha particles due to their greater charge.
Given these considerations, the configuration that will result in the largest deflection of alpha particles would be:
low-energy alpha particles passing through a field of high mass-number-particles.
This setup allows for significant interaction with the high mass-number particles, enhancing the deflection effect.