Introduction - AG Nörtershäuser

Welcome at LaserSpHERe!

Laser Spectroscopy on highly-charged ions and exotic radioactive nuclides = LaserSpHERe

The working group LaserSpHERe performs precision experiments along the borderline of atomic, nuclear, and particle physics. One main focus is the laser spectroscopy of short-lived isotopes in order to determine the nuclear ground state properties like charge radius, magnetic dipole moments, electric quadrupole moments, and spin. The second main research field is spectroscopy on highly-charged ions.

The working group emerged from the Helmholtz Young Investigators Group with the same name at the Department of Nuclear Chemistry of the University of Mainz. Within this project the charge radii of short-lived isotopes of lithium and beryllium have been determined, especially of the halo nuclei Lithium-11 and Beryllium-11. We intend to determine the charge radius of the proton halo nucleus Bor-8 in collaboration with a group in Argonne. In addition to the collinear laser spectroscopy at ISOLDE/CERN (COLLAPS) experiments at TRIUMF in Vancouver and in Argonne are planned. At the TRIGA reactor Mainz we have established the prototype of the LASPEC experiment for the future FAIR facility at GSI Darmstadt. This will soon be shipped to the Argonne National Laboratory and used for spectroscopy on boron-8. Afterwards, we will install the setup at CARIBU (as well at Argonne) until it will return to Darmstadt in time for the start of FAIR experiments.

The experiments on highly-charged are directly performed at GSI Helmholtzzentrum für Schwerionenforschung. Our work focuses on the Experimental Storage Ring ESR and the Penning trap for laser spectroscopy (SPECTRAP), which is a part of the HITRAP facility. New experiments are currently initiated at CRYRING – the new storage ring at GSI – as well.

For more information, please click through our experiment pages or read the article that appeared in January 2015 in the magazine “International Innovation”.

According to our field of interest, the research of LaserSpHERe is strongly experimental oriented. The experiments are located at a laboratory at the Institute for Nuclear Chemistry at the University of Mainz, the GSI Helmholtz Centre for Heavy Ion Research at Darmstadt as well as at the radioactive beam facility ISOLDE at CERN. In fall 2014, the setup of a major research infrastructure has started in the Institute for Nuclear Physics at TU Darmstadt. Therefore we are looking for the support of interested students, which have a common sense of scientific curiosity and enjoy participating in the development of a new experiment. In case you have any questions concerning our work or our open positions, please feel free to contact us or send us an .

The different projects of our working group are supported by foundation grants of the Helmholtz Association, the Federal Ministry of Education and Research, the German Research Foundation (DFG), and the Hessisches Landesprogramm LOEWE within HIC for FAIR.

We hope you enjoy clicking through our pages.

Yours, the LaserSpHERe Team