ATOMIC AND MOLECULAR PHYSICS |
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Orientation Dependence of Photoelectron Angular Distribution in Nitrogen Molecule Irradiated by XUV Laser Field |
Xiao-Dong Yang1**, Ming Gao2, Yuan Tian1 |
1Department of Optical and Electrical Information, Xi'an University of Technological Information, Xi'an 710200
2College of Optoelectronic engineering, Xi'an Technological University, Xi'an 710021 |
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Cite this article: |
Xiao-Dong Yang, Ming Gao, Yuan Tian 2016 Chin. Phys. Lett. 33 013102 |
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Abstract We theoretically study the dependence of photoelectron angular distribution on laser polarization direction in nitrogen molecules. The approach is based on the time-dependent density functional theory at the level of local density approximation complemented by self-interaction correction. It is found that photoelectron emission in one photon regime could be considered as a probing tool for the main character of different types of molecular orbitals ($\sigma$ or $\pi$). The pattern of emitted photoelectrons strongly depends on the polarized angle of the laser, for $\sigma$ orbital, the number of photoelectron decreases with increasing the polarized angle, while for $\pi$ orbital, it has the inverse relation to the polarized angle, which reveals the multi-electron effect in molecules. On the other hand, concerning the total photoelectron emission, one should take into account a few occupied orbitals instead of only the outmost one.
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Received: 23 June 2015
Published: 29 January 2016
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PACS: |
31.15.ee
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(Time-dependent density functional theory)
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33.80.-b
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(Photon interactions with molecules)
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78.20.Bh
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(Theory, models, and numerical simulation)
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Abstract
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