中国物理B ›› 2023, Vol. 32 ›› Issue (11): 113402-113402.doi: 10.1088/1674-1056/acf5d6

所属专题: Featured Column — DATA PAPER

• • 上一篇    下一篇

Oscillator strength and cross section study of the valence-shell excitations of NO2 by fast electron scattering

Qiang Sun(孙强), Jin-Feng Chen(陈锦峰), Zhi-Wei Nie(聂智伟), Jian-Hui Zhu(朱剑辉), and Lin-Fan Zhu(朱林繁)   

  1. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2023-08-02 修回日期:2023-08-25 接受日期:2023-09-01 出版日期:2023-10-16 发布日期:2023-10-26
  • 通讯作者: Lin-Fan Zhu E-mail:lfzhu@ustc.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFA1602500) and the National Natural Science Foundation of China (Grant Nos. 12334010 and U1932207).

Oscillator strength and cross section study of the valence-shell excitations of NO2 by fast electron scattering

Qiang Sun(孙强), Jin-Feng Chen(陈锦峰), Zhi-Wei Nie(聂智伟), Jian-Hui Zhu(朱剑辉), and Lin-Fan Zhu(朱林繁)   

  1. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2023-08-02 Revised:2023-08-25 Accepted:2023-09-01 Online:2023-10-16 Published:2023-10-26
  • Contact: Lin-Fan Zhu E-mail:lfzhu@ustc.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2022YFA1602500) and the National Natural Science Foundation of China (Grant Nos. 12334010 and U1932207).

摘要: Oscillator strengths and cross sections of the valence-shell excitations in NO2 are of great significance in testing the theoretical calculations and monitoring the state of the ozone layer in the earth's atmosphere. In the present work, the generalized oscillator strengths of the valence-shell excitations in NO2 were obtained based on the fast electron scattering technique at an incident electron energy of 1.5 keV and an energy resolution of about 70 meV. By extrapolating the generalized oscillator strengths to the limit of a zero squared momentum transfer, the optical oscillator strengths for the dipole-allowed transitions have been obtained, which provide an independent cross check to the previous experimental results. Based on the BE-scaling method, the corresponding integral cross sections have also been derived systematically from the excitation threshold to 5000 eV. The present dynamic parameters can provide the fundamental spectroscopic data of NO2 and have important applications in the studies of atmospheric science. The datasets presented in this paper, including the GOSs, OOSs and ICSs, are openly available at https://doi.org/10.57760/sciencedb.j00113.00156.

关键词: nitrogen dioxide, oscillator strength, integral cross section, electron scattering

Abstract: Oscillator strengths and cross sections of the valence-shell excitations in NO2 are of great significance in testing the theoretical calculations and monitoring the state of the ozone layer in the earth's atmosphere. In the present work, the generalized oscillator strengths of the valence-shell excitations in NO2 were obtained based on the fast electron scattering technique at an incident electron energy of 1.5 keV and an energy resolution of about 70 meV. By extrapolating the generalized oscillator strengths to the limit of a zero squared momentum transfer, the optical oscillator strengths for the dipole-allowed transitions have been obtained, which provide an independent cross check to the previous experimental results. Based on the BE-scaling method, the corresponding integral cross sections have also been derived systematically from the excitation threshold to 5000 eV. The present dynamic parameters can provide the fundamental spectroscopic data of NO2 and have important applications in the studies of atmospheric science. The datasets presented in this paper, including the GOSs, OOSs and ICSs, are openly available at https://doi.org/10.57760/sciencedb.j00113.00156.

Key words: nitrogen dioxide, oscillator strength, integral cross section, electron scattering

中图分类号:  (Molecular excitation and ionization)

  • 34.80.Gs
25.30.Dh (Inelastic electron scattering to specific states) 95.30.Ky (Atomic and molecular data, spectra, and spectralparameters (opacities, rotation constants, line identification, oscillator strengths, gf values, transition probabilities, etc.))