强红外激光场中氟里昂123分子内的V-V能量转移

用无明显拖尾的TEACO₂激光强脉冲“超激发”氟里昂₁₂₃分子(CF₃CHCl₂和CF₃CDCl₂),使其形成很高激发态。在一定条件下,在离解过程中,这种分子主要表现为具有较高键能的C—C键被打断,其主要产物是C₂F₆和丙二烯及其取代物,而具有最低键能的C—Cl键的开裂却很少,离解产物的相对产量与激光能流密度的关系曲线指出,氟里昂<关键词：

INTRAMOLECULAR V V ENERGY TRANSFER OF FREON123 IN INTENSE IR LASER FIELD

Freon₁₂₃ (CF₃CHC1₂ and CF₃CDC1₂) molecules are superexited by the intense IR laser pulse without tail from the TEA CO₂ laser, reaching very high exited state. In the dissociation processes, it is shown that the C-C bonds having higher energy in Freon₁₂₃ were mostly broken under certain experimental conditions, but only a few C-Cl bonds having lowest energy ruptured. The main products were C₂F₆, and H₂C=C=CH₂ and it's substitution derivatives. It is indicated by the relationship between the relative yields of productions and laser energy flux that intramolecular V-V energy transfer of Freon₁₂₃ is nonrandomizational.