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Chin. Phys. B, 2020, Vol. 29(6): 063302    DOI: 10.1088/1674-1056/ab8629
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Direct Coulomb explosion of N2O2+ induced by monochromatic extreme ultraviolet photons at 38.5 eV

Min Zhang(张敏)1,2, B Najjari1, Bang Hai(海帮)1,2, Dong-Mei Zhao(赵冬梅)1,2, Jian-Ting Lei(雷建廷)3, Da-Pu Dong(董达谱)1,2, Shao-Feng Zhang(张少锋)1,2, Xin-Wen Ma(马新文)1,2
1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
Abstract  The direct Coulomb explosion of N2O2+ has been investigated experimentally after double-ionization by a single extreme ultraviolet (EUV) photon with an energy of ~38.5 eV. From the ion-ion time-of-flight coincidence spectrum, the de-nitrogenation (N2O2+→N++NO+) and de-oxygenation (N2O2+→O++N2+) photodissociation channels of N2O2+ are unequivocally identified. The measured kinetic energy release (KER) distribution of the de-nitrogenation channel presents a major peak accompanied by a shoulder structure. We find that the major peak can be attributed to the direct photodissociation of the 11Δ and 11Σ+ states, while the shoulder structure should be ascribed to the predissociation of the 11Δ and 11Σ+ states via 13Π state.
Keywords:  extreme ultraviolet photon      kinetic energy release      photodissociation pathway  
Received:  27 February 2020      Revised:  31 March 2020      Accepted manuscript online: 
PACS:  33.80.-b (Photon interactions with molecules)  
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300).
Corresponding Authors:  Shao-Feng Zhang, Xin-Wen Ma     E-mail:  zhangshf@impcas.ac.cn;x.ma@impcas.ac.cn

Cite this article: 

Min Zhang(张敏), B Najjari, Bang Hai(海帮), Dong-Mei Zhao(赵冬梅), Jian-Ting Lei(雷建廷), Da-Pu Dong(董达谱), Shao-Feng Zhang(张少锋), Xin-Wen Ma(马新文) Direct Coulomb explosion of N2O2+ induced by monochromatic extreme ultraviolet photons at 38.5 eV 2020 Chin. Phys. B 29 063302

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