14.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.6k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.4k papers
- Heidelberg UniversityDE1.3k papers
- Max Planck SocietyDE1.1k papers
- University of ZurichCH1.1k papers
- European Organization for Nuclear ResearchCH1k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR990 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL973 papers
- University of Maryland, College ParkUS940 papers
- Rutherford Appleton LaboratoryGB939 papers
- Institute for Nuclear ResearchRU922 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT912 papers
15 papers · 2 filters
Two-Loop Bethe Logarithms for non-S Levels
U. D. Jentschura
Two-loop Bethe logarithms are calculated for excited P and D states in hydrogenlike systems, and estimates are presented for all states with higher angular momenta. These results c…
Storage-ring measurement of the hyperfine induced 47Ti18+(2s 2p 3P0 -> 2s2 1S0) transition rate
S. Schippers, E. W. Schmidt, D. Bernhardt +7
The hyperfine induced 2s 2p 3P0 > 2s2 1S0 transition rate AHFI in berylliumlike 47Ti18+ was measured. Resonant electron-ion recombination in a heavy-ion storage ring was employed t…
Two-loop QED corrections in few-electron ions
V. A. Yerokhin, P. Indelicato, V. M. Shabaev
Results of a calculation valid to all orders in the nuclear-strength parameter Zαare presented for the two-loop Lamb shift, notably for the two-loop self-energy correction, for the…
Harmonium in intense laser fields: excitation, absorption, and transparency
O. Kidun, D. Bauer
It is known that the dynamics of two (Coulomb-interacting) nonrelativistic electrons confined by a parabolic potential and driven by a classical, intense laser field (in dipole app…
Photorecombination of berylliumlike Ti18+: Hyperfine quenching of dielectronic resonances
S. Schippers, E. W. Schmidt, D. Bernhardt +7
The photorecombination spectrum of 48Ti18+ was measured employing the merged electron-ion beams technique at a heavy-ion storage ring. The experimental electron-ion collision energ…
Nonsequential Double Recombination in Intense Laser Fields
P. Koval, F. Wilken, D. Bauer +1
A second plateau in the harmonic spectra of laser-driven two-electron atoms is observed both in the numerical solution of a low-dimensional model helium atom and using an extended…
Relativistic ionization-rescattering with tailored laser pulses
Michael Klaiber, Karen Z. Hatsagortsyan, Christoph H. Keitel
The interaction of relativistically strong tailored laser pulses with an atomic system is considered. Due to a special tailoring of the laser pulse, the suppression of the relativi…
Adiabatic Approximation of the Correlation Function in the Density-Functional Treatment of Ionization Processes
F. Wilken, D. Bauer
The ionization of a one-dimensional model Helium atom in short laser pulses using time-dependent density functional theory is investigated. We calculate ionization probabilities as…
A novel method for unambiguous ion identification in mixed ion beams extracted from an EBIT
W. Meissl, M. C. Simon, J. R. Crespo Lopez-Urrutia +4
A novel technique to identify small fluxes of mixed highly charged ion beams extracted from an Electron Beam Ion Trap (EBIT) is presented and practically demonstrated. The method e…
Quantum electrodynamic corrections to the hyperfine structure of excited S states
Ulrich D. Jentschura, Vladimir A. Yerokhin
State-dependent quantum electrodynamic corrections are evaluated for the hyperfine splitting of nS states for arbitrary principal quantum number n. The calculations comprise both t…
Precise calculation of transition frequencies of hydrogen and deuterium based on a least-squares analysis
U. D. Jentschura, S. Kotochigova, E. -O. Le Bigot +2
We combine a limited number of accurately measured transition frequencies in hydrogen and deuterium, recent quantum electrodynamics (QED) calculations, and, as an essential additio…
Nonrelativistic QED approach to the Lamb shift
Ulrich D. Jentschura, Andrzej Czarnecki, Krzysztof Pachucki
We calculate the one- and two-loop corrections of order alpha(Zalpha)^6 and alpha^2(Zalpha)^6 respectively, to the Lamb shift in hydrogen-like systems using the formalism of nonrel…
Calculation of the One- and Two-Loop Lamb Shift for Arbitrary Excited Hydrogenic States
Andrzej Czarnecki, Ulrich D. Jentschura, Krzysztof Pachucki
General expressions for quantum electrodynamic corrections to the one-loop self-energy [of order alpha(Zalpha)^6] and for the two-loop Lamb shift [of order alpha^2(Zα)^] are derive…
Polarization operator approach to electron-positron pair production in combined laser and Coulomb fields
A. I. Milstein, C. Müller, K. Z. Hatsagortsyan +2
The optical theorem is applied to the process of electron-positron pair creation in the superposition of a nuclear Coulomb and a strong laser field. We derive new representations f…
Microscopic laser-driven high-energy colliders
Karen Z. Hatsagortsyan, Carsten Müller, Christoph H. Keitel
The concept of a laser-guided collider in the high-energy regime is presented and its feasibility discussed. Ultra-intense laser pulses and strong static magnetic fields a…