(a) A small permanent-magnet setup gives . Calculate in eV, in GHz and in . (b) For…

PHYSICS · Subjective · Fermi University Physics · Atomic, Molecular & Optical Physics · Radiative transitions, external fields and collisions · Radiative transitions, external fields and collisions

Reading the Spectrum, Ch Atoms in a magnetic field: moments, the Zeeman effect and the Paschen-Back limit

Problem

(a) A small permanent-magnet setup gives

B = 0.15\,\mathrm{T}

. Calculate

\mu_{\rm B}B

in eV, in GHz and in

\mathrm{cm^{-1}}

. (b) For the potassium

4\mathrm{p}\,{}^2\mathrm{P}_{1/2}

level (

g_J = \tfrac23

), adjacent magnetic sublevels (

\Delta m_J = 1

) are found to be split by

0.10\,\mathrm{cm^{-1}}

in a weak-field experiment. Find the field

B

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