THE B'(1)SIGMA(+)(U)-]X(1)SIGMA(+)(G) AND D-1-PI(U)-]X(1)SIGMA(+)(G) BAND SYSTEMS OF MOLECULAR-HYDROGEN

Spectral line positions and emission probabilities of the B'(1) Sigma(u)(+) --> X(1) Sigma(g)(+) and D-1 Pi(u) --> X(1) Sigma(g)(+) band system of molecular hydrogen have been calculated by solving a system of four coupled Schrodinger equations. A great number of rotational line, emitted by a low-pressure electric discharge in H-2, have been identified from 122 nm down to 78 nm. All the 69 bands of the B'(1) Sigma(u)(+) system and many high-J lines of 145 bands of the D (1) Pi(u) --> X(1) Sigma(g)(+) system are reported for the first time. Improved molecular constants are derived for the (unperturbed) electronic excited state D (1) Pi(u)(-).