Precision spectroscopy of the $A^2\Pi$ $\leftarrow$ $X^2{\Sigma }^{+}$ transition in BaF

M. C. Mooij, H. L. Bethlem, W. Ubachs +14

High-resolution spectroscopy on the $A^2\Pi$ - $X^2{\Sigma }^{+}$ electronic system of ${}^{138}$Ba${}^{19}$F is performed using a cold molecular beam produced by a buffer gas source. The hyperfin…