Quantum physics (quantum theory, quantum mechanics)
Quantum physics (quantum theory, quantum mechanics)
Quantum physics (quantum theory, quantum mechanics)
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Atoms in magnetic field<br />
orbiting electron behaves like current loop<br />
• magnetic moment μ = current x area<br />
• interaction energy = μ·B (both vectors!)<br />
= μ·B <br />
• loop current = -ev/(2πr)<br />
• ang. mom. L = mvr<br />
• magnetic moment = - μ B L/ħ<br />
μ B = e ħ/2m e = “Bohr magneton”<br />
• interaction energy<br />
= m μ B B z<br />
(m = z –comp of L)<br />
A<br />
n <br />
L <br />
<br />
r<br />
I<br />
36<br />
e
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