期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.243001
关键词
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资金
- Eastern Scholar Program
- NCET in University [NCET-12-0177]
- SSTC [13QH1401400]
- Shu Guang project [12SG25]
- National Natural Science Fund [11374103]
We investigate dissociative double ionization of acetylene, one of the smallest organic molecules yet with a rich electronic structure, in strong laser fields by measuring two fragment ions and two electrons in coincidence. The two-body fragmentation channels are dominated by the removal of electrons from the lower-lying molecular orbitals rather than from the highest occupied one. The electron localization-assisted enhanced ionization mechanism plays a central role for the strong-field deprotonation ionization of acetylene by releasing the second electron from the up-field potential well of the hydrogen site at the internuclear distance near twice the equilibrium value of the C-H bond.
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