CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Resonant photoelectron imaging of deprotonated uracil anion via vibrational levels of a dipole-bound excited state
Huang, DL; Liu, HT; Ning, CG; Dau, PD; Wang, LS
2017
Source PublicationCHEMICAL PHYSICS
ISSN0301-0104
Volume482Pages:374-383
Subtype期刊论文
AbstractWe report both non-resonant and resonant high-resolution photoelectron imaging of cryogenically cooled deprotonated uracil anions, N1[U-H](-), via vibrational levels of a dipole-bound excited state. Photodetachment spectroscopy of N1[U-H](-) was reported previously (Liu et al., 2014), in which forty-six vibrational autodetachment resonances due to the excited dipole-bound state were observed. By tuning the detachment laser to the vibrational levels of the dipole-bound state, we obtained high resolution resonant photoelectron spectra, which are highly non-Franck-Condon. The resonant photoelectron spectra reveal many Franck-Condon inactive vibrational modes, significantly expanding the capability of photoelectron spectroscopy. A total of twenty one fundamental vibrational frequencies for the N1[U-H](.) radical are obtained, including all eight low-frequency out-of-plane modes, which are forbidden in non-resonant photoelectron spectroscopy. Furthermore, the breakdown of the Delta v = -1 propensity rule is observed for autodetachment from many vibrational levels of the dipole-bound state, due to anharmonic effects. In particular, we have observed intramolecular electron rescattering in a number of resonant photoelectron spectra, leading to excitations of low-frequency vibrational modes. Further theoretical study may be warranted, in light of the extensive experimental data and new observations, to provide further insight into the autodetachment dynamics and vibronic coupling in dipole-bound states, as well as electron molecule interactions. (C) 2016 Elsevier B.V. All rights reserved.
KeywordDipole-bound State Deprotonated Uracil Photoelectron Imaging Resonant Photoelectron Spectroscopy Autodetachment
DOI10.1016/j.chemphys.2016.06.003
Indexed BySCI
Language英语
WOS IDWOS:000394634700044
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27435
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Huang, DL,Liu, HT,Ning, CG,et al. Resonant photoelectron imaging of deprotonated uracil anion via vibrational levels of a dipole-bound excited state[J]. CHEMICAL PHYSICS,2017,482:374-383.
APA Huang, DL,Liu, HT,Ning, CG,Dau, PD,&Wang, LS.(2017).Resonant photoelectron imaging of deprotonated uracil anion via vibrational levels of a dipole-bound excited state.CHEMICAL PHYSICS,482,374-383.
MLA Huang, DL,et al."Resonant photoelectron imaging of deprotonated uracil anion via vibrational levels of a dipole-bound excited state".CHEMICAL PHYSICS 482(2017):374-383.
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