THE ABSORPTION SPECTRUM OF 35Cl2 FROM 4780 TO 6000 Å

Abstract

The discrete absorption bands of gaseous chlorine which lie between 6000 Å and the dissociation limit, near 4780 Å, have been photographed at high resolution with a 10-meter concave-grating spectrograph. This complex spectrum has been simplified by the use of the separated isotopic species 35Cl2 and by cooling the cell. An analysis of all the strong bands has been achieved. The principal constants of the ground state are Be = 0.24407, α = 0.00153, ωe = 559.71, ωexe = 2.70, [Formula: see text], and re = 1.9878 Å.