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

  • 2021/08/17

    Collinear Laser Spectroscopy in an MR-TOF

    First studies of collinear laser spectroscopy in a multi-reflection time-of-flight mass spectrometer adapted for laser spectroscopy appeared in the journal Nuclear Instruments and Methods A. It presents first studies with magnesium isotopes that were performed in the standard fly-by technique

  • 2021/07/29

    Wavelength-meter calibration across the Atlantic

    To support collinear laser spectroscopy measurements of short-lived proton-rich nickel isotopes with the BECOLA experiment at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU), we measured absolute transition frequencies of three iodine lines in the 700-nm wavelength range with our frequency comb. Using similar setups on both sides of the Atlantic

  • 2021/07/19

    Hendrik Bodnar has completed his Bachelor Thesis

    Hendrik Bodnar has completed his Bachelor Thesis with the presentation „Analysis of Trapping Times of various Charge States of Ar Ions in a Penning Trap“. Congratulations!

  • 2021/07/02

    Single-Particle Character above Tin-132

    The measurements of the magnetic and quadrupole moments of the ground state in 133Sb and an isomer in 134Sb with nuclear spin I=7 were performed at ISOLDE by collinear laser spectroscopy within the COLLAPS collaboration

  • 2021/06/21

    COALA Beamline extended

    The COALA Beamline was extended with a switchyard that will allow us to connect several ion sources simultaneously to the apparatus, providing a higher flexibility for laser spectroscopy. An electron beam ion source (EBIS) will be installed at one of the additional arms end of September.

  • 2021/06/07

    Felix Sommer defends his PhD thesis successfully

    Felix Sommer defended his Dissertation entitled “Nuclear Charge Radii across the N=Z=28 Shell Closure in Nickel Isotopes”. Congratulations from the whole LaserSphere team Felix!

  • 2021/05/21

    GHG-Awards for Members of LaserSphere

    Prices of the Gerhard-Herzberg Gesellschaft (GHG) have been awarded during todays Physics Colloquium at TU Darmstadt. Members of our working groups have been distinguished in almost all categories:
    Manuel Simon, who performed his bachelor thesis research in our group, was awarded a B.Sc. Study Price

  • 2021/05/11

    Offline measurements on stable nickel isotopes are published

    Our paper on “Isotope-shift measurements and King-fit analysis in nickel isotopes” has been published in Physical Review C. Off-line measurements of stable nickel isotopes were performed at the BECOLA setup at MSU and are in good agreement with previous measurements at COLLAPS.

  • 2021/05/05

    New DFG project granted

    ALIVE stands for "Accurate Laser-Involved Voltage Evaluation"

    The German Research Foundation (DFG) supports our Developments towards precise high-voltage measurements for three years. Our application entitled “Laser-Based High-Voltage Metrology with 1 ppm Accuracy” has been fully funded.

  • 2021/05/03

    Laser Spectroscopy of C3+ at half the speed of light

    Spectroscopic results for the two 2s-2p resonance lines in lithium-like carbon ions appeared today in the journal Scientific Reports. The ions were stored in the experimental storage ring ESR at GSI at about half the speed of light and a new continuous-wave UV laser system