中国物理B ›› 2020, Vol. 29 ›› Issue (6): 63302-063302.doi: 10.1088/1674-1056/ab8629

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

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

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)   

  1. 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
  • 收稿日期:2020-02-27 修回日期:2020-03-31 出版日期:2020-06-05 发布日期:2020-06-05
  • 通讯作者: Shao-Feng Zhang, Xin-Wen Ma E-mail:zhangshf@impcas.ac.cn;x.ma@impcas.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300).

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. 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
  • Received:2020-02-27 Revised:2020-03-31 Online:2020-06-05 Published:2020-06-05
  • Contact: Shao-Feng Zhang, Xin-Wen Ma E-mail:zhangshf@impcas.ac.cn;x.ma@impcas.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300).

摘要: 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.

关键词: extreme ultraviolet photon, kinetic energy release, photodissociation pathway

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.

Key words: extreme ultraviolet photon, kinetic energy release, photodissociation pathway

中图分类号:  (Photon interactions with molecules)

  • 33.80.-b