1) Consider the particles described below. They all have the same kinetic energy entering a uniform magnetic field B, moving perpendicular to B. Particle Charge Mass Proton m Deuteron b. 2m Alpha 2q 4m a) What is the ratio of the radius of the deuteron path to the radius of the proton path? b) What is the ratio of the radius of the alpha particle path to the radius of the proton path?

A proton beam accelerated by a 100 kV potential difference enters a region where there is a 0.1 T magnetic field at right angles to the beam. i) Calculate the radius of curvature of the beam in the magnetic field region. ii) Sketch the trajectory of the proton beam and state how the velocity of the protons has been affected by the magnetic field.

Identify the interactions between matter and magnetic fields.

lecture example