Note that the iron used here must be a large thin sheet of iron. We cannot use a block of iron to act as magnetic shielding as the iron will become an induced magnet and the field lines will pass through it when a block of iron is used.
The electric coils rapped around the GlowStick should redirect magnetic particles radially out the end of the GlowStick. Stay away from those ends of you can.
Note - If a periodic on/off cycle is used when the coils are unpowered, charge particles will not be confined or redirected.