Revised Analysis of the Structure of the v1 Band of Methane

Abstract The CARS spectrum of the v 1 band of 12 CH 4 at a pressure of 14 mbar was recorded using cw excitation in the cavity of a ring argon ion laser. The analysis of the intensity profile of the obarred spectrum led to the detection of inconsistencies with the hitherto proposed calculated positions of transitions with J = 7 to J = 10 and to a relocation of the corresponding lines.