Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Phys Chem Chem Phys. 2012 Mar 28;14(12):4230-5. doi: 10.1039/c2cp23880b. Epub 2012 Feb 15.
Two-body decomposition processes of methylacetylene (CH(3)CCH) and its isotopomer methyl-d(3)-acetylene (CD(3)CCH) in intense laser fields (790 nm, 40 fs, 5.0 × 10(13) W cm(-2)) are investigated by the coincidence momentum imaging (CMI). In methyl-d(3)-acetylene, a total of six decomposition pathways in which one of the C-C bonds is broken and a total of six pathways in which an atomic hydrogen ion (H(+) or D(+)) or a molecular hydrogen ion (H(2)(+), HD(+), D(3)(+), or HD(2)(+)) is ejected are identified. It is revealed from the analysis of the CMI data that the migration of two deuterons as well as the exchange between a proton and a deuteron occurs prior to the two-body decomposition of a doubly charged parent molecule.
双体分解过程的甲基乙炔（CH （3 ） CCH ）及其同位素甲基 - D （3 ）乙炔（ CD （3 ） CCH ）在强激光场（ 790nm ， 40fs ， 5.0 × 10 （ 13 ） W cm （-2 ））进行的符合动量成像（ CMI ）。在甲基 - D （3 ）乙炔，一共有六个分解途径，其中之一的 C - C 键被打破，一共有六个途径，其中一个原子氢离子（ H （+ ）或 D （+ ））或一个分子氢离子（ H （2 ）（+ ）， HD （+ ）， D （3 ）（+ ），或 HD （2 ）（+ ））被逐出。从 CMI 数据分析表明，两个氘原子的迁移以及质子和氘之间的交换发生在双电荷母体分子的双体分解之前。
