**About the Editors**

#### **Mustapha Laatiaoui**

Mustapha Laatiaoui (Dr.) is a research group leader at the Department of Chemistry, University of Mainz, in Germany. His research activities include the study of atomic and nuclear structures of the heaviest chemical elements and the investigation of their transport properties in dilute gases. In 2018, he received an ERC Consolidator Grant for the development of a novel technique of optical spectroscopy to study the electronic structure of elements beyond nobelium (element 102).

#### **Sebastian Raeder**

Sebastian Raeder (Dr.) is a senior scientist at the GSI Helmholtzzentrum fur¨ Schwerionenforschung GmbH in Darmstadt, Germany. Working at the velocity filter SHIP (Separator for Heavy Ion reaction Products), his research topics revolve around the study of nuclear and atomic properties of the heaviest chemical elements. A special focus within this broad field lies in laser spectroscopic investigations of heavy elements for fundamental nuclear physics, trace analysis and ion source applications.
