in neat (no solvent) Irradiation (UV/VIS); (12)C/(13)C rod vaporization by 532 nm pulser Nd:YAG laser, condensatin in solid Ar on Au plated surface cooled to ca. 10 K in vac. <1E-7 Torr;

in gaseous matrix Irradiation (UV/VIS); sample ablation by Nd:YAG laser at 532 nm for 5-10 min, condensation in solid Ar on Au plate substrate at ca. 10 K;

in neat (no solvent) Irradiation (UV/VIS); (12)C/(13)C rod vaporization by 532 nm pulser Nd:YAG laser, condensatin in solid Ar on Au plated surface cooled to ca. 10 K in vac. <1E-7 Torr;