Magnetic moment of singly ionized helium

1. Mar 28, 2014

Emspak

1. The problem statement, all variables and given/known data

Find the magnetic moment of singly ionized helium in terms of Bohr Magneton

I know the expression for the Bohr Magneton -- I am not trying to get a walk-through here as I want to do this myself, but I just want to know if I am correct in assuming that to get the problem going I use the Bohr radius expression, but with Z=2 and e = 1 (since we have one electron and two protons).

Plugging in the Bohr radius to the expression for angular momentum ($L= 2\pi \nu r^2$ after that.

Mostly I wasn't sure if I should assume its the magnetic moment of the nucleus or the electron around it...

2. Mar 28, 2014

Simon Bridge

3. Mar 29, 2014

Emspak

that's just it -- it isn't entirely clear from the question whether we're supposed to work from the spins or fro mthe shell model, or derive the whole thing. I was going to derive it and try to go from there.

4. Mar 29, 2014

Simon Bridge

Well what does the coursework do?

5. Mar 30, 2014

Emspak

well, so far he hasn't gone into the equations using Lande g-factor yet, or any of that. So I suspect that I should do the following:

-calculate the radius of single electron orbit around He nucleus using Bohr model
- plug that into the expressions for magnetic moment, working basically classically
- see how that compares to bohr magneton

Does that sound reasonable?