(a) A solenoid gives a field . Calculate in eV, in GHz and in . (b) In the same…

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 solenoid gives a field

B = 0.90\,\mathrm{T}

. Calculate

\mu_{\rm B}B

in eV, in GHz and in

\mathrm{cm^{-1}}

. (b) In the same laboratory, adjacent components of the sodium D2 line (

589.0\,\mathrm{nm}

^2\mathrm{P}_{3/2} \to {}^2\mathrm{S}_{1/2}

) are measured to be

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

apart. Neighbouring components of this six-line pattern are spaced by

\tfrac23\mu_{\rm B}B/hc

. Find the field

B

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