Investigation of dressed-state formation mechanism by spectroscopic measurements

基于测量的离子产额和量子化学计算结果，研究了强飞秒激光场作用下电离有机分子中氢快速迁移的碎裂路径。对醚类和醇类，H_3O^+通过C_2H_4OH^+排出;对乙醇二聚体，H_3O^+通过C_2H_5OH_2^+排出。在使用氘标记乙烷CH_3CD_3的实验中，从H_2^+，H_3 ^+，H_2碎片中的H/D混合比证明了通过CH_2CH_2^<2+>. H_2络合物的反应路径产生H_2和H_3^+碎片。

Fragmentation paths through fast hydrogen migration within ionized organic molecules by an intense femtosecond laser field were investigated based on measured ion yields and results of the quantum chemical calculation. The H_3O^+ ejection paths via C_2H_4OH^+ for ethers and alcohols, and via C_2H_5OH_2^+ for ethanol dimer, and their time scales were clarified. In the experiment using deuterium-labeled ethane, CH_3CD_3, it was demonstrated from H/D mixing ratios in the H_2^+,H_3^+,H_2 fragments that a reaction path through a CH_2CH_2^<2+>…H_2 complex produces H_2 and H_3^+ fragments.