Knowledge Bank

Perturbations for the $A1\Sigma$ for the $\nu 1=0$ and 1 states have been previously $reported.1$ Perturbations have been observed up to $\nu \prime =22$ and J’s up to 120. An analytical expression obtained from the diagonalization of the Hamiltonian matrix has been used to fit these perturbations. A new set of molecular constants has been obtained for the $A1\Sigma$ level that fits the spectrum up to at least $\nu \prime =30$. The spin-orbit splitting of the $3\Pi$ states have been determined along with the $A1\Sigma$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi$ potential curves.