Knowledge Bank

The $B3\Pi 0u+-X1\Sigma g\mathrm{<mrow\; data-mjx-texclass="ORD">+</mrow>}$ transition of jet cooled $\mathrm{<mrow\; data-mjx-texclass="ORD">79</mrow>}Br2$ recorded with a narrow bandwidth ring dye laser will be anayzed using a hyperfine hamiltonian containing an electric quadrupole term, a spin-rotation term, and scalar and tensor spin-spin terms. Accurate fits of lines associated with low J levels yield the reduced matrix elements for both the upper and lower electronic states. These reduced matrix elements contain information on how the atomic orbitals contribute to the molecular orbitals in bromine and how their contributions change along the vibrational ladder. A study of how these reduced matrix elements are perturbed by the presence of a van der Waals' bond to neon and how they can be used to obtain additional information about the atom-molecule potential will be introduced.