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Journal Article

Extremely asymmetric electron localization in H2+ controlled with a THz field

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Deng,  Yunpei
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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PhysRevA.89.023419.pdf
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Citation

Jia, Z., Zeng, Z., Li, R., Xu, Z., & Deng, Y. (2014). Extremely asymmetric electron localization in H2+ controlled with a THz field. Physical Review A, 89(2): 023419. doi:10.1103/PhysRevA.89.023419.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0014-D142-6
Abstract
We propose a scheme to achieve extremely asymmetric electron localization during molecular dissociations. Hydrogen molecular ion ( H2+) dissociation is theoretically investigated. A THz pulse is used to steer the electron motion after the molecular ion is excited by an ultrashort ultraviolet (UV) laser pulse. An unprecedentedly high probability as 99.3% to localize electrons on one of the two nuclei is demonstrated, with the dissociation probability of 6.14% and almost no ionization, by optimizing the peak intensities and time-delay of the two pulses. Even when the total dissociation probability is increased to 25.6%, more than 96.3% electrons can be localized in all dissociation events. These results represent a significant advancement in the electronic dynamics control in molecules.