The static polarizability of atomic potassium is quoted in SI units as .

PHYSICS · Multi-part · 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 an electric field: the Stark effect and polarizability

Problem

The static polarizability of atomic potassium is quoted in SI units as α=4.83×10−39 C m2 V−1\alpha = 4.83\times10^{-39}\,\mathrm{C\,m^2\,V^{-1}}. ((a)) Express α/4πϵ0\alpha/4\pi\epsilon_0 in units of a03a_0^3, using 1 a03=1.482×10−31 m31\,a_0^3 = 1.482\times10^{-31}\,\mathrm{m^3}. ((b)) Calculate the quadratic Stark shift of the potassium ground level in a field of E=6.0×106 V m−1E = 6.0\times10^6\,\mathrm{V\,m^{-1}}, giving the final answer in MHz.

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