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Aiming at the investigation of above-threshold ionization in super-strong laser fields with highly charged ions, we develop a Coulomb-corrected strong field approximation (SFA). The influence of the Coulomb potential of the atomic core on…

Atomic Physics · Physics 2015-05-19 Michael Klaiber , Enderalp Yakaboylu , Karen Z. Hatsagortsyan

Photoelectron spectra obtained from the ab initio solution of the time-dependent Schr\"odinger equation can be in striking disagreement with predictions by the strong-field approximation (SFA) not only at low energy but also around twice…

Atomic Physics · Physics 2016-12-14 Th. Keil , S. V. Popruzhenko , D. Bauer

We analytically derive the all-order strong-field S-matrix series incorporating intermediate-state Coulomb-Volkov corrections (ICSFA). Focusing on rescattering processes described by the second-order term, we systematically investigate the…

Atomic Physics · Physics 2026-05-18 Chunli Miao , Jiarui Qin , Chan Li , Xiaolei Hao , Weidong Li , Jing Chen

Using the recently developed Coulomb Quantum Orbit Strong-Field Approximation (CQSFA), we perform a systematic analysis of several features encountered in above-threshold ionization (ATI) photoelectron angle-resolved distributions (PADs),…

Atomic Physics · Physics 2017-10-11 A. S. Maxwell , A. Al-Jawahiry , T. Das , C. Figueira de Morisson Faria

We perform a systematic comparison between photoelectron momentum distributions computed with the rescattered-quantum orbit strong-field approximation (RQSFA) and the Coulomb-quantum orbit strong-field approximation (CQSFA). We exclude…

We develop a relativistic Coulomb-corrected strong field approximation (SFA) for the investigation of spin effects at above-threshold ionization in relativistically strong laser fields with highly charged hydrogen-like ions. The…

Atomic Physics · Physics 2015-05-19 Michael Klaiber , Enderalp Yakaboylu , Karen Z. Hatsagortsyan

We analyze how bound-state excitation, electron exchange and the residual binding potential influence above-threshold ionization (ATI) in Helium prepared in an excited $p$ state, oriented parallel and perpendicular to a linearly polarized…

Above-threshold ionization (ATI) results from strong field laser-matter interaction and it is one of the fundamental processes that may be used to extract electron structural and dynamical information about the atomic or molecular target.…

Atomic Physics · Physics 2016-01-06 Noslen Suárez , Alexis Chacón , Marcelo Ciappina , Jens Biegert , Maciej Lewenstein

We provide approximate analytic expressions for above-threshold ionization (ATI) transition probabilities and photoelectron angular distributions (PADs). These analytic expressions are more general than those existing in the literature and…

Atomic Physics · Physics 2018-02-14 A. S. Maxwell , A. Al-Jawahiry , X. Y. Lai , C. Figueira de Morisson Faria

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 incorporates the Coulomb interaction between the photoelectron…

Atomic Physics · Physics 2009-11-13 S. V. Popruzhenko , D. Bauer

Experiments on atoms in intense laser pulses and the corresponding exact ab initio solutions of the time-dependent Schr\"odinger equation (TDSE) yield photoelectron spectra with low-energy features that are not reproduced by the otherwise…

Atomic Physics · Physics 2017-11-21 Tian-Min Yan , S. V. Popruzhenko , M. J. J. Vrakking , D. Bauer

We perform a detailed analysis of above threshold ionization (ATI) in atoms within the strong field approximation (SFA) by considering spatially inhomogeneous monochromatic laser fields. The locally enhanced field induced by resonance…

Atomic Physics · Physics 2015-06-15 T. Shaaran , M. F. Ciappina , M. Lewenstein

By performing a joint theoretical and experimental investigation on the high-order above-threshold ionization (HATI) spectrum, the dominant role of the 3rd-return-recollision trajectories in the region near the cutoff due to the ionic…

We use a quantum trajectory-based semi-classical method to account for Coulomb interaction between the photoelectron and the parent ion in the classically forbidden, sub-barrier region during strong-field tunneling ionization processes. We…

Atomic Physics · Physics 2017-11-21 Tian-Min Yan , D. Bauer

We investigate the role of the Coulomb interaction in strong field processes. We find that the Coulomb field of the ion makes its presence known even in highly intense laser fields, in contrast to the assumptions of the strong field…

Atomic Physics · Physics 2019-05-15 Jonathan Dubois , Simon Berman , Cristel Chandre , Turgay Uzer

We perform a detailed analysis of the different types of orbits in the Coulomb Quantum Orbit Strong-field Approximation (CQSFA), ranging from direct to those undergoing hard collisions. We show that some of them exhibit clear counterparts…

Atomic Physics · Physics 2018-06-13 A. S. Maxwell , C. Figueira de Morisson Faria

Strong-field light-matter interactions initiate a wide range of phenomena in which the quantumpaths of electronic wavepackets can be manipulated by tailoring the laser field. Among the electronsreleased by a strong laser pulse from atomic…

Chemical Physics · Physics 2022-11-30 S Rozen , S Larroque , N Dudovich , Y Mairesse , B Pons

The role of Coulomb focusing in above-threshold ionization in an elliptically polarized mid-infrared strong laser field is investigated within a semiclassical model incorporating tunneling and Coulomb field effects. It is shown that Coulomb…

Atomic Physics · Physics 2015-05-30 Chengpu Liu , Karen Z. Hatsagortsyan

We consider the interaction of hydrogen-like atoms with a strong laser field and show that the strong field approximation and all its variants may be grouped into a set of families of approximation schemes. This is done by introducing an…

The ionization of atoms and molecules by strong laser fields has been studied extensively, both theoretically and experimentally. The strong-field approximation (SFA) allows for the analytical solution of the Schr\"{o}dinger equation and…

Atomic Physics · Physics 2023-04-24 Danish Furekh Dar , Björn Minneker , Stephan Fritzsche
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