Question

is there a similar magnetic field produced around a thin beam of moving

Answer 1

magnetic field is created around the path of moving charged particle .

In case of moving alpha particle , magnetic field is created around on its path of motion due to alpha particle is positive charged .Let magnetic field created due to motion of alpha particle is B ,

While neutrons are neutrals , means there are no charge on neutrons. so, in case of neutrons , magnetic field couldn't be possible . Hence , magnetic field due to motion of neutrons is 0

Here is clear , there is no similar magnetic field produced around thin beam of moving alpha particles and neutrons