Assuming a nuclear g-factor g=1, a nuclear spin I=1/2 and applied field B0=2 T, determine the photon energy for photons that will be absorbed in the case without hyperfine interaction :

delta_E = 0.15 meV

—
A = 0.21\mueV

Transitions between the former mJ=-1/2 and -1/2 levels,
delta_E(m_i=+1/2,+1/2) = A*1/2*/1/2 = 0.05 \mueV

Transitions between the former mJ=-3/2 and -1/2 levels,
delta_E(m_i=+1/2,+1/2) = A*1/2*3/2 = 0.15 \mueV