Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
J Chem Phys. 2010 Aug 21;133(7):071103. doi: 10.1063/1.3473931.
Hydrogen migration in methanol induced by an intense laser field (0.2 PW/cm(2)) is investigated in real time by a pump-probe coincidence momentum imaging method. The observed temporal evolution of the kinetic energy spectra reveals that there are two distinctively different stages in the hydrogen migration processes in the singly charged methanol: ultrafast hydrogen migration occurring within the intense laser field ( approximately 38 fs) and slower postlaser pulse hydrogen migration ( approximately 150 fs).
利用泵浦-探测符合动量成像方法实时研究了强激光场(0.2PW/cm(2))诱导甲醇中的氢迁移。观测到的动能谱的时间演化表明,在单电荷甲醇的氢迁移过程中有两个明显不同的阶段:强激光场中发生的超快氢迁移(约 38fs)和较慢的激光脉冲后氢迁移(约 150fs)。