Assignment of excited-state bond lengths using branching-ratio measurements: The B 2Σ+ state of BaH molecules

Vibrational branching ratios in the B{\phantom{\rule{0.16em}{0ex}}}^{2}{\mathrm{\ensuremath{\Sigma}}}^{+}-X{\phantom{\rule{0.16em}{0ex}}}^{2}{\mathrm{\ensuremath{\Sigma}}}^{+}and A{\phantom{\rule{0.16em}{0ex}}}^{2}\mathrm{\ensuremath{\Pi}}-X{\phantom{\rule{0.16em}{0ex}}}^{2}{\mathrm{\ensuremath{\Sigma}}}^{+}optical-cycling transitions of BaH molecules are investigated using measurements and ab initio calculations. The experimental...