Robuta

https://www.aanda.org/articles/aa/ref/2019/11/aa35337-19/aa35337-19.html Relativistic electron impact ionization cross sections of carbon ions and application to an... electron impact ionization https://www.nist.gov/publications/electron-impact-ionization-cross-section-database-version-20 Electron-Impact Ionization Cross Section Database (version 2.0) | NIST electron impact ionization version 2 0 cross section database nist