# Tag Info

You are looking at $\nabla \vec B$-drift here (spoken: grad-E drift). This type of motion can be explained in a simplified way, when imagining a 2-D plane, separated at y=0 with two different magnetic field strengths, $B_z$. Let us say that for y>0, $\rm B_z$ is large and for y<0, $\rm B_z$ is weak. The strong field imparts a small gyro-radius for the ...