What gives rise to a magnetic moment in a proton/neutron?

[pbutter]

Homework Statement

Describe, with examples, what is meant by magnetic moment. What gives rise to a magnetic moment in a proton/neutron?

Homework Equations

The Attempt at a Solution

I know what a magnetic moment is, just struggling with the other parts of the question.
So what I'm thinking is that an electron orbiting generates a magnetic moment since it is a charged particle moving in a circle. In the same way the spin of a nucleus generates a magnetic moment since the nucleus is comprised of charged quarks which are spinning when the proton/neutron is spinning. Is this correct?

 

[Orodruin]

No, it is not correct. Your view of how things work is way too classical. Why do you think an electron has a magnetic moment? (It is a point particle.)

 

[pbutter]

Electron generates a magnetic field when it travels in a circle (I x A)

 

[pbutter]

Also how would a magnetic moment be generated in a neutron/proton, is it just be because of the spin that it has or is it just some inherent property that we have learned to accept but no answer

 

[Orodruin]

Electron generates a magnetic field when it travels in a circle (I x A)

No, even a stationary electron has a magnetic moment.

 

[pbutter]

I think I'm sort of getting it spin is just something that elementary particles have. It is intrinsic to them and anything charged with a spin/angular momentum will have a magnetic moment.

 

[Orodruin]

I think I'm sort of getting it spin is just something that elementary particles have. It is intrinsic to them and anything charged with a spin/angular momentum will have a magnetic moment.

Even uncharged particles can have an intrinsic magnetic moment, but yes, it is a property of the elementary particle. Just as elementary particles have mass or charge, they in general have an intrinsic angular momentum and magnetic moment.

 

[epenguin]

The question was about a proton or neutron, not electron.