A. Krieger

activity

20082016

most citedNuclear Charge Radii of Be-7,9,10 and the one-neutron halo nucleus Be-11

258 citations · 777 across the 11 of their papers we have counts for

collaborators

11 papers

physics.atom-ph2016★ 28 cited

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 $2 s^{2} S_{1/2}$ $\to$ $2 p^{2} P_{1/2, 3/2}$ transitions in Be $^{+}$ were measured with a frequency comb in stable and short…

nucl-ex2015★ 22 cited

Collinear laser spectroscopy of atomic cadmium

Nadja Frömmgen, Dimiter L. Balabanski, Mark L. Bissell +16

Hyperfine structure $A$ and $B$ factors of the atomic $5 s 5 p^{3} P_{2} \to 5s 6s^{3} S_{1}$ transition are determined from collinear laser spectroscopy data of…

physics.atom-ph2015★ 21 cited

Precision Test of Many-Body QED in the Be $^{+}$ $2 p$ Fine Structure Doublet Using Short-Lived Isotopes

Wilfried Nörtershäuser, Christopher Geppert, Andreas Krieger +13

Absolute transition frequencies of the $2 s^{2} S_{1/2} \to 2 p^{2} P_{1/2, 3/2}$ transitions in Be $^{+}$ were measured for the isotopes $^{7, 9 - 12}$ Be. The fine st…

physics.atom-ph2015

Isotope shift of $^{40, 42, 44, 48}$ Ca in the $4 s^{2} S_{\frac{1}{2}} \to 4p^{2} P_{\frac{3}{2}}$ transition

C. Gorges, K. Blaum, N. Frömmgen +8

We report on improved isotope shift measurements of the isotopes $^{40, 42, 44, 48}$ Ca in the $4 s^{2} S_{\frac{1}{2}} \to 4p^{2} P_{\frac{3}{2}}$ (D2) transition usin…

physics.atom-ph2014★ 80 cited

Test of Time Dilation Using Stored Li+ Ions as Clocks at Relativistic Speed

Benjamin Botermann, Dennis Bing, Christopher Geppert +14

We present the concluding result from an Ives-Stilwell-type time dilation experiment using 7Li+ ions confined at a velocity of beta = v/c = 0.338 in the storage ring ESR at Darmsta…

physics.atom-ph2013★ 2 cited

Modern Ives-Stilwell Experiments At Storage Rings: Large Boosts Meet High Precision

G. Gwinner, B. Botermann, C. Geppert +14

We give a brief overview of time dilation tests using high-resolution laser spectroscopy at heavy-ion storage rings. We reflect on the various methods used to eliminate the first-o…