262 citations · 1.5k across the 37 of their papers we have counts for
41 papers
Raman Transitions in Collinear Laser Spectroscopy for High-Precision Frequency Measurements
Julien Spahn, Hendrik Bodnar, Kristian König +2
We demonstrate stimulated Raman spectroscopy on dipole-forbidden fine-structure transitions in a fast ion beam. It is applied to the c…
Collinear Laser Spectroscopy of the Transitions in Helium-like B
Axel Buß, Konstantin Mohr, Volker Hannen +9
We report on hyperfine structure measurements of the fine-structure transitions in the spectrum of B ions. The h…
Accurate Charge Radius Measurement of C Confronts Ab Initio Theory
Kristian König, Patrick Müller, Tobias Gesser +11
Located at the neutron shell closure , the long-lived radioactive isotope C plays a critical role in geochronology and nuclear structure studies. Despite its widespre…
Laser spectroscopy illuminates the shell closure
Tim E. Lellinger, Liss V. Rodriguez, Patrick Muller +29
Atomic nuclei are strongly correlated quantum many-body systems, and how their shell structure evolves with increasing neutron excess remains a central open question in nuclear phy…
Collinear Laser Spectroscopy on a Fast Atomic Beam of Boron Generated by Photodetachment of Accelerated B- Ions
L. Renth, P. Imgram, B. Maass +6
Atomic beams for collinear laser spectroscopy are typically produced via charge exchange reactions in an in-beam vapor cell. This process is accompanied by the formation of a consi…
Nuclear charge radii of aluminium isotopes at the proton drip line
Alex Brinson, Brooke Rickey, Pierre Arthuis +35
Understanding the evolution of nuclear size away from stability remains a central challenge in nuclear physics. In neutron-deficient systems, charge radii can be highly sensitive t…
Nuclear Charge Radii of Sr Isotopes: Reevaluation based on Transition Frequency Measurements in the manifold in Sr
J. Palmes, K. König, B. K. Sahoo +10
High-precision quasi-simultaneous collinear and anticollinear laser spectroscopy was performed on the (D1), $5s\,^2S_{1/2}\rightarrow 5p\,^…
Towards better nuclear charge radii
István Angeli, Dimiter L. Balabanski, Paraskevi Dimitriou +16
Nuclear charge radii constitute a physical observable of growing significance across multiple subdisciplines of physics and related fields. Their determination relies on a combinat…
The N=126 Factory: A New Multi-Nucleon Transfer Reaction Facility
A. A. Valverde, M. S. Martin, W. S. Porter +23
Multi-nucleon transfer (MNT) reactions between two heavy ions offer an effective method of producing heavy, neutron-rich nuclei that cannot currently be accessed efficiently using…
Demonstration of a Raman Velocity Filter in Collinear Laser Spectroscopy: Towards Applications for sub-ppm High-Voltage Measurements
Julien Spahn, Hendrik Bodnar, Kristian König +1
Raman transitions have a wide range of applications in atomic physics and have recently been proposed as a means for improving high-precision high-voltage measurements. Here, we pr…
Splitting Isotope Shift in the Fine-Structure Triplet in C: Experiment and Theory
Patrick Müller, Kristian König, Emily Burbach +6
We report measurements and theoretical calculations of the fine-structure splittings in all three transitions in the heliumlike syst…
The QTF-Backbone: Proposal for a Nationwide Optical Fibre Backbone in Germany for Quantum Technology and Time and Frequency Metrology
Tara Cubel Liebisch, Peter Kaufmann, Harald Schnatz +166
The recent breakthroughs in the distribution of quantum information and high-precision time and frequency (T&F) signals over long-haul optical fibre networks have transformative po…
A Setup to Study Atomic State Population Dynamics and Optical Polarization at CRYRING@ESR
K. Mohr, R. Sánchez, W. Nörtershäuser +26
We present a recently established setup for laser spectroscopy at CRYRING@ESR at the GSI Helmholtz Centre for Heavy Ion Research. Here, laser spectroscopy can be performed on store…
Ultra-stable 3D-printed precision voltage divider for calibrations and experiments
Stephan Passon, Kristian König, Florian Schilling +3
This paper presents the concept of an ultra-stable, thermally independent precision voltage divider tailored for direct current (DC) voltages up to 60 kV. Key features of this volt…
High Voltage Determination and Stabilization for Collinear Laser Spectroscopy Applications
Kristian König, Finn Köhler, Julian Palmes +7
Fast beam collinear laser spectroscopy is the established method to investigate nuclear ground state properties such as the spin, the electromagnetic moments, and the charge radius…
Transition frequencies, isotope shifts, and hyperfine structure in transitions of Ti ions
Tim Ratajczyk, Kristian König, Philipp Bollinger +4
We have measured transition frequencies, isotope shifts and hyperfine structure splittings in the $3 d^{2}\left({ }^{3\!}F\right) 4 s\,{ }^{4} F_J\rightarrow 3 d^{2}\left({ }^{3\!}…
Collinear laser spectroscopy of highly charged ions produced with an electron beam ion source
Phillip Imgram, Kristian König, Bernhard Maaß +2
Collinear laser spectroscopy has been performed on He-like C ions extracted from an electron beam ion source (EBIS). In order to determine the transition frequency with the…
Collinear Laser Spectroscopy of transitions in helium-like
Phillip Imgram, Kristian König, Bernhard Maaß +2
Transition frequencies and fine-structure splittings of the transitions in helium-like were measured by collinear…
Nuclear charge radius of Al and its implication for V in the quark-mixing matrix
P. Plattner, E. Wood, L. Al Ayoubi +50
Collinear laser spectroscopy was performed on the isomer of the aluminium isotope Al. The measured isotope shift to Al in the $3s^{2}3p\;^{2}\!P^\circ_{3/2} \rightar…
A Fluorescence Detection Region for Collinear Laser Spectroscopy
Bernhard Maaß, Kristian König, Jörg Krämer +4
We report on a novel detection system for collinear laser spectroscopy which provides an almost solid angle for fluorescence photon detection by employing curved surface mirro…
Charge radius of the short-lived Ni and correlation with the dipole polarizability
S. Kaufmann, J. Simonis, S. Bacca +26
We present the first laser spectroscopic measurement of the neutron-rich nucleus Ni at the \mbox{} subshell closure and extract its nuclear charge radius. Since this i…
Lifetimes and g-factors of the HFS states in H-like and Li-like bismuth
Volker Hannen, Jonas Vollbrecht, Zoran Andelkovic +23
The LIBELLE experiment performed at the experimental storage ring (ESR) at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt, Germany, has successfully determined the gr…
New Nuclear Magnetic Moment of Bi - Resolving the Bismuth Hyperfine Puzzle
Leonid V. Skripnikov, Stefan Schmidt, Johannes Ullmann +9
A recent measurement of the hyperfine splitting in the ground state of Li-like Bi has established a "hyperfine puzzle" -- the experimental result exhibits a 7 de…
Frequency-comb based collinear laser spectroscopy of Be for nuclear structure investigations and many-body QED tests
A. Krieger, W. Nörtershäuser, Ch. Geppert +13
Absolute transition frequencies of the transitions in Be were measured with a frequency comb in stable and short…