Multiphoton spectroscopy of the gasdynamically cooled SF6: third harmonic generation and dissociation spectrum

The third harmonic generation spectrum originating in the system of the low laying SF6 vibrational levels has been investigated for the gasdynamically cooled gas (Trot ≅ 30 K) using a continuously tuned CO2-laser. A HF*-luminescence technique has been applied to obtain the SF6 dissociation spectrum. The spectral features revealed did allow to make an adequate choice of the anharmonicity constants.