AG Nörtershäuser

Welcome to AG Nörtershäuser

Group photo, taken on Sept. 25th 2020 at the Castle Frankenstein in the Odenwald (south of Darmstadt) by Felix Sommer. f.l.t.r.: Konstantin Mohr, Laura Renth, Tim Ratajczyk, Simon Rausch, Felix Sommer, Max Horst, Patrick Müller, Philipp Bollinger, Tim Lellinger, Jörg Krämer, Wilfried Nörtershäuser, Phillip Imgram

Laser spectroscopic nuclear chart

Our Service to the Community:
An up-to-date nuclear chart with all isotopes that have been investigated by on-line laser spectroscopy, tables and references is provided here …>

Current News

  • 2021/04/08

    Lisa Raymann has completed her Bachelor Thesis

    Lisa Raymann has completed her Bachelor Thesis with the presentation „Characterization of mirror systems for the optical detection in collinear laser spectroscopy“. Congratulations!

  • 2021/03/11

    New Laser at CRYRING@ESR installed

    A Mixtrain from the Company Sirah Lasertechnik was installed in the laser laboratory at CRYRING@ESR. It is combined with the new MATISSE 2 titanium-sapphire laser and a wavetrain to produce light at 280-nm, which will be used in the beamtime on Mg+ ions end of March.

  • 2021/02/04

    Have we seen first optical pumping in a storage ring?

    This question is investigated in our paper published today in Physical Review Accelerators and Beams.
    We study optical pumping in the ESR using a rate equation approach to explain the disappearance of an optical resonance in Li+ when changing for linear to circular polarized light.

  • 2021/01/25

    First laser spectroscopic studies of short-lived Al isotopes published

    First laser spectroscopic results of short-lived Al isotopes appeared today in Physical Review C. The measurements were carried out at the COLLAPS beamline at ISOLDE/CERN. Besides the changes in charge radii, the magnetic and quadrupole moments were determined and compared with ab-initio calculations

  • 2021/01/18

    Thierry Kaldenbach has completed his Bachelor Thesis

    Thierry Kaldenbach has completed his Bachelor Thesis with the presentation „Controls of FPGAs and Implementation of a discrete Optimization Routine at the HITRAP Facility“. Congratulations!

  • 2021/01/11

    Simon Rausch has completed his Master Thesis

    Simon Rausch has completed his Master Thesis with the presentation „Investigation of Electron Cooling of Highly Charged Ions“. Congratulations from LaserSpHERe!

  • 2021/01/01

    Hardware paper on a remotely controlled iris diaphragm

    Our paper on the development of a motor-driven autonomous system for controlling the aperture of a beamline iris aperture has been published in the Journal HardwareX. It was developed during the IREP internship of Daniel Pinheiro Leal at TU Darmstadt.

  • 2020/12/18

    Bernhard Maaß receives Giersch Award

    Bernhard Maaß received a “Giersch Award for an Outstanding Doctoral Thesis” for his Dissertation “Laser Spectroscopy of the Boron Isotopic Chain”. Congratulations!

  • 2020/12/10

    Solution to the field-shift puzzle in singly-charged calcium

    Our measurements of the transition frequencies in the singly-charged stable calcium isotopes have been published in Physical Review Research. With these, the discrepancy between experiment and theory existing in the field-shift ratio of two electric dipole transitions was solved.

  • 2020/11/30

    New DAQ System employed for the Spectroscopy of Germanium Isotopes at COLLAPS

    Our measurements of nuclear moments of the Germanium isotopes Ge-69,71,73 have been published today in Physical Review C. The new data acquisition system TILDA was used and demonstrated its versatility by identifying a molecular component of the beam.