| Literature DB >> 30004781 |
P Chhetri1,2, D Ackermann2,3, H Backe4, M Block2,5,6, B Cheal7, C Droese8, Ch E Düllmann2,5,6, J Even6,9, R Ferrer10, F Giacoppo2,6, S Götz2,5,6, F P Heßberger2,6, M Huyse10, O Kaleja2,11, J Khuyagbaatar2,6, P Kunz12, M Laatiaoui2,6, F Lautenschläger1,2, W Lauth4, N Lecesne3, L Lens2,5, E Minaya Ramirez13, A K Mistry2,6, S Raeder2,6, P Van Duppen10, Th Walther1, A Yakushev2,6, Z Zhang14.
Abstract
One of the most important atomic properties governing an element's chemical behavior is the energy required to remove its least-bound electron, referred to as the first ionization potential. For the heaviest elements, this fundamental quantity is strongly influenced by relativistic effects which lead to unique chemical properties. Laser spectroscopy on an atom-at-a-time scale was developed and applied to probe the optical spectrum of neutral nobelium near the ionization threshold. The first ionization potential of nobelium is determined here with a very high precision from the convergence of measured Rydberg series to be 6.626 21±0.000 05 eV. This work provides a stringent benchmark for state-of-the-art many-body atomic modeling that considers relativistic and quantum electrodynamic effects and paves the way for high-precision measurements of atomic properties of elements only available from heavy-ion accelerator facilities.Entities:
Year: 2018 PMID： 30004781 DOI： 10.1103/PhysRevLett.120.263003
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161