| ATOMIC AND MOLECULAR PHYSICS |
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Nonadiabatic Effect on the Rescattering Trajectories of Electrons in Strong Laser Field Ionization Process |
| Xin-Hai Tu1, Xiao-Lei Hao1**, Wei-Dong Li1, Shi-Lin Hu2, Jing Chen2 |
1Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006
2Institute of Applied Physics and Computational Mathematics, Beijing 100088
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| Cite this article: |
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Xin-Hai Tu, Xiao-Lei Hao, Wei-Dong Li et al 2016 Chin. Phys. Lett. 33 093201 |
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Abstract The important features of the rescattering trajectories in strong field ionization process such as the cutoff of the return energy at $3.17 U_{\rm p}$ and that of the final energy at $10 U_{\rm p}$ are obtained, based on the adiabatic approximation in which the initial momentum of the electron is assumed to be zero. We theoretically study the nonadiabatic effect by assuming a nonzero initial momentum on the rescattering trajectories based on the semiclassical simpleman model. We show that the nonzero initial momentum will modify both the maximal return energy at collision and the final energy after backward scattering, but in different ways for odd and even number of return trajectories. The energies are increased for even number of returns but are decreased for odd number of returns when the nonzero (positive or negative) initial momentum is applied.
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Received: 29 June 2016
Published: 30 September 2016
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| PACS: |
32.80.Rm
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(Multiphoton ionization and excitation to highly excited states)
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32.80.Fb
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(Photoionization of atoms and ions)
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34.50.Rk
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(Laser-modified scattering and reactions)
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42.50.Hz
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(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
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