Isotopically selective dissociation of Freon 12 molecules in a single-frequency pulsed CO2 laser field

An experimental investigation was made of dependences of the dissociation selectivity and yield of ¹³CF₂Cl₂ molecules on the gas pressure, wavelength, radiation energy density, and laser pulse shape. The dissociation selectivity for the P 20 line and a radiation energy density of 4 J/cm² carried by short pulses (~ 100 nsec) was 35-95 at pressures of 1–20 Torr. The dissociation yield was 3-5% and the working pressure of the natural Freon was up to 10 Torr.