【摘要】 本文用TEA CO₂激光器研究了1,2-环氧丙烷（PO）、四氢呋喃（THF）和烯丙基醚（DAE）等含C—C—C键有机物的多光子解离过程;给出了PO和THF的解离率与激光能量的关系;较详细地探讨了C—O—C键的断裂机理。实验发现,这些分子解离时的初始步骤都是断裂较弱的C—O键,解离阈值约为0.8J/cm²。更多还原

【Abstract】 Using TEA CO2 laser as excitation source, we have studied the processes of multiphoton dissociation of propylene oxide (PO), tetrahydrofuran (THF)and diallyl ether (DAE). It was obtained that the dependence of dissociation yield on laser energy-density. We propose a mechanism involving breakage of the C-O bond in PO, THF and DAE. We found that the initiative step of dissociation in these moleculae is breakage of the weaker C-O bond. The threshold energy is about 0.8J/cm2.更多还原