Rotational excitation of OH by H2: a clarification

The authors reconsider the energetic ordering of the Lambda -doublet components of the OH radical. Recent experimental and theoretical work suggests that the assignments of the symmetries of the levels have been previously made incorrectly. The implications of the revised assignments are that collisions with H 2 molecules lead to anti-inversion in the 2 Pi 3/2 ladder of the radical and inversion for J