# I Nuclear g-factor

#### teroenza

Looking at the Wikipedia page for the Lande g-factor, I'm a bit confused. I thought that $g_I\approx5.585$, that of the proton, but then there is the line saying that
This last approximation is justified because g_I is smaller than g_j by the ratio of the electron mass to the proton mass.
https://en.wikipedia.org/wiki/Landé_g-factor

It makes sense that the nuclear and Bohr magnetons would differ by the mass ratio, but I thought $g_s \approx 2$, $g_L=1$, and $g_I\approx5.585$. Then the additional factors in the Lande calculation would account for the different $J,S,F$.

Related Quantum Physics News on Phys.org

#### Jilang

I believe that the Wiki page is discussing atoms rather than nucleii.

#### teroenza

You're right. I was confusing the nuclear g-factor of a proton with the nuclear g-factor of an atom.

"Nuclear g-factor"

### Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving