Resonancelike enhancement in high-order above-threshold ionization of   polyatomic molecules

doi:10.1103/PhysRevA.93.043422

CORC > 北京大学 > 工学院

	Resonancelike enhancement in high-order above-threshold ionization of polyatomic molecules
	Wang, C. ; Okunishi, M. ; Hao, X. ; Ito, Y. ; Chen, J. ; Yang, Y. ; Lucchese, R. ; Zhang, M. ; Yan, B. ; Li, W. D. ; Ding, D. ; Ueda, K.
刊名	PHYSICAL REVIEW A
	2016
关键词	DIFFRACTION ORBITALS DYNAMICS SPECTRA
DOI	10.1103/PhysRevA.93.043422
英文摘要	We investigate the resonance-like enhancement (RLE) in high-order above-threshold ionization (ATI) spectra of the polyatomic molecules C2H4 and C2H6. In the spectrum-intensity maps, strong and weak RLE areas emerge alternatively for both C2H4 and C2H6 but in different sequences. Theoretical calculations using the strong-field approximation reproduce the experimental observation and analysis shows that the different characteristics of the two molecules can be attributed to interference effects of molecular orbitals with different symmetries. For C2H4, the RLE structures are attributed to C-C centers of the highest occupied molecular orbital (HOMO) orbital. For C2H6, in contrast, the C-C centers of the HOMO and HOMO-1 orbitals do not contribute to the RLE due to destructive interference but the hydrogen centers of the bonding HOMO-1 orbital give rise to the multiple RLE regions. In addition, clear experimental evidence of the existence of two types of the RLE and their dependence on the parity of ground state is shown. Our result, which strongly supports the channel-closing mechanism of the RLE, for the first time reveals the important role of low-lying orbitals and the differing roles of different atomic centers in the high-order ATI spectrum of molecules.; National Basic Research Program of China [2013CB922200, 2011CB808102]; NNSFC [11304117, 11304329, 11175227, 11105205, 11274050, 11334009, 11534004, 11425414, 11274141, 11504215]; China Postdoctoral Science Foundation [2013M530137, 2015T80293]; IMRAM project; SCI(E); EI; ARTICLE; xlhao@sxu.edu.cn; chen_jing@iapcm.ac.cn; dajund@jlu.edu.cn; ueda@tagen.tohoku.ac.jp; 4; 93
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437371]
专题	工学院
推荐引用方式 GB/T 7714	Wang, C.,Okunishi, M.,Hao, X.,et al. Resonancelike enhancement in high-order above-threshold ionization of polyatomic molecules[J]. PHYSICAL REVIEW A,2016.
APA	Wang, C..,Okunishi, M..,Hao, X..,Ito, Y..,Chen, J..,...&Ueda, K..(2016).Resonancelike enhancement in high-order above-threshold ionization of polyatomic molecules.PHYSICAL REVIEW A.
MLA	Wang, C.,et al."Resonancelike enhancement in high-order above-threshold ionization of polyatomic molecules".PHYSICAL REVIEW A (2016).