38 citations · 189 across the 22 of their papers we have counts for
26 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…
Magnetic Dipole Hyperfine Constants of 15 Energy Levels in Tm II Determined by Collinear Laser Fluorescence Spectroscopy
Hendrik Bodnar, Kristian König, Wilfried Nörtershäuser
We present measurements of the hyperfine structure, transition frequencies and relative intensities in 14 lines of 169Tm+ ions starting from the $4f^{13}({}^2\!F^o_{7/2})6s_{1/2} (…
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…
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\,^…
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…
Charge radii of neutron-rich scandium isotopes and the seniority symmetry in the shell
S. W. Bai, X. F. Yang, Á. Koszorús +30
Nuclear charge radii of neutron-rich Sc isotopes were measured using collinear laser spectroscopy at CERN-ISOLDE. The new data reveal that the charge radii of scandium is…
Charge Radii Measurements of Exotic Tin Isotopes in the Proximity of and
F. P. Gustafsson, L. V. Rodríguez, R. F. Garcia Ruiz +51
We report nuclear charge radii for the isotopes Sn, measured using two different collinear laser spectroscopy techniques at ISOLDE-CERN. These measurements clarify the…
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…
Nuclear charge radii of silicon isotopes
Kristian König, Julian C. Berengut, Anastasia Borschevsky +20
The nuclear charge radius of Si was determined using collinear laser spectroscopy. The experimental result was confronted with ab initio nuclear lattice effective field theo…
Surprising charge-radius kink in the Sc isotopes at N=20
Kristian König, Stephan Fritzsche, Gaute Hagen +11
Charge radii of neutron deficient 40Sc and 41Sc nuclei were determined using collinear laser spectroscopy. With the new data, the chain of Sc charge radii extends below the neutron…
Ground State Magnetic Dipole Moment of Sc
Robert Powel, B. Alex Brown, Jason D. Holt +6
The hyperfine coupling constants of the proton dripline odd-odd Sc nucleus were deduced from the hyperfine spectrum of the \,\,$3d4p\,^3…
Kinetic-beam-energy determination via collinear laser spectroscopy
Kristian König, Kei Minamisono, Jeremy Lantis +2
An approach to determine the kinetic beam energy at the level is presented, which corresponds to an improvement by more than one order of magnitude compared to convention…
High-resolution laser spectroscopy of Al
H. Heylen, C. S. Devlin, W. Gins +24
Hyperfine spectra of Al () have been measured at the ISOLDE-CERN facility via collinear laser spectroscopy using the $3s^23p\ ^2\text{P}^\text{o} _{3/2}\righta…