New sets of experimental wavenumber values for triplet-triplet rovibronic transitions of $H_2$ and $D_2$ for visible part of spectrum ($400 \div 700$ nm) have been obtained. The digital intensity registration providing a linear response of the detector gave us the opportunity of digital deconvolution of the recorded line profiles. For line centers that made it possible to reach an accuracy ($< 0.0006$ nm) limited only by selfconsistency of various wavenumber standards. New sets of wavenumber values were obtained with accuracy $0.006 \div 0.05$ cm$^{ -1}$.
Categories: physics.chem-ph