4 papers
Ab initio calculations of the electronic structure of Ac
Genevieve Geehan, Marten Luit Reitsma, Johan David Polet +3
Accurate spectroscopic investigations of the heaviest elements are inherently challenging, due to their short lifetimes and low production yields. Success of such measurements requ…
Relativistic quintuple-zeta basis sets for the s block
Marten L. Reitsma, Eifion H. Prinsen, Johan D. Polet +2
Relativistic basis sets of quintuple-zeta quality are presented for the s-block elements. The basis sets include SCF exponents for the occupied spinors and for the np shell (the la…
Relativistic atomic structure calculations in support of spectroscopy
L. F. Pašteka, E. Eliav, M. L. Reitsma +1
Theory can provide important support at all the stages of spectroscopic experiments, from planning the measurements to the interpretation of the results. Such support is particular…
Pinning down electron correlations in RaF via spectroscopy of excited states and high-accuracy relativistic quantum chemistry
M. Athanasakis-Kaklamanakis, S. G. Wilkins, L. V. Skripnikov +53
We report the spectroscopy of the 14 lowest excited electronic states in the radioactive molecule radium monofluoride (RaF). The observed excitation energies are compared with full…