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
18 papers · 2 filters
Pair production in laser fields oscillating in space and time
Matthias Ruf, Guido R. Mocken, Carsten Müller +2
The production of electron-positron pairs from vacuum by counterpropagating laser beams of linear polarization is calculated. In contrast to the usual approximate approach, the spa…
Anisotropic fragmentation in low-energy dissociative recombination
S. Novotny, H. Rubinstein, H. Buhr +18
On a dense energy grid reaching up to 75 meV electron collision energy the fragmentation angle and the kinetic energy release of neutral dissociative recombination fragments have b…
Spectroscopy and dissociative recombination of the lowest rotational states of H3+
A. Petrignani, H. Kreckel, M. H. Berg +13
The dissociative recombination of the lowest rotational states of H3+ has been investigated at the storage ring TSR using a cryogenic 22-pole radiofrequency ion trap as injector. T…
Virtual Resonant States in Two-Photon Decay Processes: Lower-Order Terms, Subtractions, and Physical Interpretations
Ulrich D. Jentschura
We investigate the two-photon decay rate of a highly excited atomic state which can decay to bound states of lower energy via cascade processes. We show that a naive treatment of t…
Reexamining Black-Body Shifts for Hydrogenlike Ions
U. D. Jentschura, M. Haas
We investigate black-body induced energy shifts for low-lying levels of atomic systems, with a special emphasis on transitions used in current and planned high-precision experiment…
Bound-free pair creation with a linearly polarized laser field and a nuclear field
C. Deneke, C. Müller
The process of bound-free pair production of electrons and positrons in combined laser and Coulomb fields is investigated. It is assumed that an ion collides at relativistic speed…
Relativistic calculation of the two-photon decay rate of highly-excited ionic states
Ulrich D. Jentschura, Andrey Surzhykov
Based on quantum electrodynamics, we reexamine the two-photon decay of one-electron atoms. Special attention is paid to the calculation of the (two-photon) total decay rates which…
Two-Photon Decays Reexamined: Cascade Contributions and Gauge Invariance
Ulrich D. Jentschura
The purpose of this paper is to calculate the two-photon decay rate corresponding to the two-photon transitions nS->1S and nD->1S in hydrogenlike ions with a low nuclear charge num…
Strong Field Ionization Rate for Arbitrary Laser Frequencies
S. V. Popruzhenko, V. D. Mur, V. S. Popov +1
A simple, analytical, nonrelativistic ionization rate formula for atoms and positive ions in intense ultraviolet and x-ray electromagnetic fields is derived. The rate is valid at a…
Muon pair creation from positronium in a linearly polarized laser field
Carsten Müller, Karen Z. Hatsagortsyan, Christoph H. Keitel
Positronium decay into a muon-antimuon pair by virtue of the interaction with a superintense laser field of linear polarization is considered. The minimum laser intensity required…
Electron self-energy in the presence of magnetic field: hyperfine splitting and g factor
V. A. Yerokhin, U. D. Jentschura
A high-precision numerical calculation is reported for the self-energy correction to the hyperfine splitting and to the bound-electron g factor in hydrogenlike ions with low nuclea…
Nuclear-resonant electron scattering
Adriana Pálffy, Zoltán Harman
We investigate nuclear-resonant electron scattering as occurring in the two-step process of nuclear excitation by electron capture (NEEC) followed by internal conversion. The nucle…
Muon pair creation by two x-ray laser photons in the field of an atomic nucleus
Carsten Müller, Carlus Deneke, Christoph H. Keitel
The generation of muon-antimuon pairs is calculated in the collision of an ultrarelativistic bare ion with an intense x-ray laser beam. The reaction proceeds nonlinearly via absorp…
Strong Field Approximation for Systems with Coulomb Interaction
S. V. Popruzhenko, D. Bauer
A theory describing above-threshold ionization of atoms and ions in a strong electromagnetic field is presented. It is based on the widely known strong field approximation and inco…
Recollision-Induced Plasmon Excitation in Strong Laser Fields
M. Ruggenthaler, S. V. Popruzhenko, D. Bauer
Recolliding electrons are responsible for many of the interesting phenomena observed in the interaction of strong laser fields with atoms and molecules. We show that in multielectr…
Delbrück scattering in combined Coulomb and laser fields
A. Di Piazza, A. I. Milstein
We study Delbrück scattering in a Coulomb field in the presence of a laser field. The amplitudes are calculated in the Born approximation with respect to the Coulomb field and exac…
Isotope shift in the dielectronic recombination of three-electron ^{A}Nd^{57+}
C. Brandau, C. Kozhuharov, Z. Harman +25
Isotope shifts in dielectronic recombination spectra were studied for Li-like ^{A}Nd^{57+} ions with A=142 and A=150. From the displacement of resonance positions energy shifts δE^…
Double-Resonance g Factor Measurements by Quantum Jump Spectroscopy
W. Quint, B. Nikoobakht, U. D. Jentschura
With the advent of high-precision frequency combs that can bridge large frequency intervals, new possibilities have opened up for the laser spectroscopy of atomic transitions. Here…