Ultrafast hydrogen migration in allene in intense laser fields: Evidence of two-body Coulomb explosion
Ultrafast hydrogen migration in allene in intense laser fields: Evidence of two-body Coulomb explosion
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DOI：
10.1016/j.cplett.2008.12.097
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发表时间：
2009-02-17
影响因子：
2.8
通讯作者：
Yamanouchi, Kaoru
中科院分区：
文献类型：
--
作者：
Xu, Huailiang;Okino, Tomoya;Yamanouchi, Kaoru
利用符合动量成像（CMI）方法研究了超短（约40 fs）强激光场作用下联烯的两体库仑爆炸。从CMI谱图中，我们确定了C3 H42 + -> CHm+ + C2 H4-m+（m = 1-3）和C3 H42 + -> C3 H4-n+ + H-n（+）（n = 1-3）两种两体库仑爆炸途径。CH 3+、C2 H3+和H-3（+）的形成表明，与超快氢迁移相关的化学键重排发生在电离成C3 H42+之前，并且氢迁移的程度决定了两个最初相同的C=C化学键中的任何一个被破坏。(C)2009年爱思唯尔B。版权所有© 2016
Two-body Coulomb explosion of allene induced by an ultrashort (similar to 40 fs) intense laser field is investigated by the coincidence momentum imaging (CMI) method. From the CMI maps, two types of two-body Coulomb explosion pathways, C3H42+ -> CHm+ + C2H4-m+ (m = 1-3) and C3H42+ -> C3H4-n+ + H-n(+) (n = 1-3), are securely identified. The formation of CH3+, C2H3+, and H-3(+) shows that the chemical bond rearrangement associated with the ultrafast hydrogen migration occurs prior to the ionization into C3H42+ and that the extent of the hydrogen migration determines either one of the two initially identical C=C chemical bonds is broken. (C) 2009 Elsevier B. V. All rights reserved.