摘要
用无明显拖尾的TEACO_2激光强脉冲“超激发”氟里昂_(123)分子(CF_3CHCl_2和CF_3CDCl_2),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C_2F_4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_(123)分子内的V-V能量转移具有非随机化行为。
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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第10期1542-1546,共5页
Acta Physica Sinica
