https://www.nist.gov/publications/5f-electron-excitation-energies-and-coulomb-term-u-light-actinide-metals
Relativistic Hartree-Fock-Wigner-Seitz band calculations have been performed for the actinide metals Ac through Am in order to estimate 5f excitation energies.
electron excitationenergiescoulombterm
https://arxiv.org/abs/2504.05286v1
Abstract page for arXiv paper 2504.05286v1: UK APAP R-matrix electron-impact excitation cross-sections for modelling laboratory and astrophysical plasma
electron impactukapapmatrixexcitation
https://www.arxiv.org/abs/1501.03900
Abstract page for arXiv paper 1501.03900: Role of two-electron processes in the excitation-ionization of lithium atoms by fast ion impact
in theroletwoelectronprocesses