Generalized oscillator strength of the core-excited states of molecular nitrogen studied by nonresonant inelastic x-ray scattering

Li-Han Wang, Tao Xiong, Xu Kang, Zhi-Wei Nie, Jin-Feng Chen, Zhen Xie, Shuai Yan, Ai-Guo Li, Yuan-Chen Xu, Shu-Xing Wang, Ke Yang, and Lin-Fan Zhu
Phys. Rev. A 106, 022806 – Published 11 August 2022

Abstract

Fast electron impact was used to study the generalized oscillator strengths of the inner-shell excitations in atoms and molecules previously. In this work, a nonresonant inelastic x-ray scattering technique is extended to determine the generalized oscillator strengths of (1σg1πg)+(1σu1πg) inner-shell excitations of molecular nitrogen in the squared momentum transfer range of 0.86 to 14.40 a.u. at a photon energy of about 10 keV and an energy resolution of about 1.3 eV. The present generalized oscillator strength strictly follows the first Born approximation and thus provides a rigorous test to the previously calculated results and the experimental ones measured by the electron energy loss spectroscopy. The presently extrapolated optical oscillator strength at zero momentum transfer is in accord with most experimental results and the theoretical data with the correlation effect considered carefully. This work indicates that the nonresonant inelastic x-ray scattering technique is a powerful tool to study the core excitation mechanism in atoms and molecules.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 19 May 2022
  • Accepted 29 July 2022

DOI:https://doi.org/10.1103/PhysRevA.106.022806

©2022 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Li-Han Wang1, Tao Xiong2,3, Xu Kang4, Zhi-Wei Nie1, Jin-Feng Chen1, Zhen Xie1, Shuai Yan5, Ai-Guo Li5, Yuan-Chen Xu1, Shu-Xing Wang1, Ke Yang5,*, and Lin-Fan Zhu1,†

  • 1Hefei National Research Center for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
  • 2Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, People's Republic of China
  • 3Spallation Neutron Source Science Center (SNSSC), Dongguan 523803, People's Republic of China
  • 4Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, People's Republic of China
  • 5Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, People's Republic of China

  • *yangke@zjlab.org.cn
  • lfzhu@ustc.edu.cn

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 106, Iss. 2 — August 2022

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×