3.2.3 Cyclotronic motion

By=50, normal to the velocity. Two particles with the same value for the ratio q/m possess the same cyclotronic frequency. The inner particle has m=150 u and q=10 u, and the outer particle has m=300 u and q= 20 u.


 

The fact to be remarked is that the rotation frequency does only depend on the ratio q/m and the value of the applied magnetic field. This is the basis of the particle accelerator known as "cyclotron".