期刊
JOURNAL OF CHEMICAL PHYSICS
卷 152, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/5.0002877
关键词
-
资金
- National Science Foundation [PHY-1504584, PHY-1806145]
Two-body dissociation resulting from strong-field double ionization of water is investigated. Two distinct features are seen in the alignment of the fragment momenta with respect to the laser polarization. One feature shows alignment of the H-OH axis with the laser polarization, while the other indicates polarization alignment normal to the H-OH axis. By analyzing kinematic differences between the OH+/D+ and OD+/H+ channels of HOD, these two alignment features are shown to result from dissociation from different states in the dication. Only dissociation from one of these states has an alignment dependence consistent with predictions of sequential strong-field tunneling ionization models. The alignment dependence of dissociation from the other state can only be explained by dynamic alignment launched by the unbending of the molecule during ionization. Published under license by AIP Publishing.
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