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Related papers: Multielectron ionization in O$_2^+$ driven by inte…

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We formulate a general three-dimensional semiclassical model for the study of correlated multielectron escape during fragmentation of molecules driven by intense infrared laser pulses, while fully accounting for the magnetic field of the…

Atomic Physics · Physics 2023-11-30 Georgios Petros Katsoulis , Matthew Benjamin Peters , Agapi Emmanouilidou

We formulate a three-dimensional semi-classical model to treat three-electron escape dynamics in a strongly-driven linear triatomic molecule, HeH$_{2}^{+}$. Our model includes the Coulomb singularities. Hence, to avoid unphysical…

Atomic Physics · Physics 2021-04-21 M. B. Peters , V. P. Majety , A. Emmanouilidou

We extend a recently developed three-dimensional semiclassical model to study double and triple ionization of Ne driven by infrared laser pulses at various intensities. This model fully accounts for the Coulomb singularity of each electron…

Atomic Physics · Physics 2025-12-18 Samuel James Praill , Georgios Petros Katsoulis , Agapi Emmanouilidou

We formulate a three-dimensional semi-classical model to address triple and double ionization in three-electron atoms driven by intense infrared laser pulses. During time propagation, our model fully accounts for the Coulomb singularities,…

Atomic Physics · Physics 2022-04-20 M. B. Peters , G. P. Katsoulis , A. Emmanouilidou

We develop an analytical model of correlated two-electron ionization in strong infrared laser fields. The model includes all relevant interactions between the electrons, the laser field, and the ionic core nonperturbatively. We focus on the…

Atomic Physics · Physics 2009-02-14 Denys I. Bondar , Wing-Ki Liu , Misha Yu. Ivanov

We demonstrate a general three-dimensional semiclassical model as a powerful technique for the study of correlated multi-electron escape in atoms driven by infrared laser pulses at intensities where electron-electron correlation prevails.…

Atomic Physics · Physics 2023-04-26 Agapi Emmanouilidou , Matthew Benjamin Peters , Georgios Petros Katsoulis

We present the first theoretical treatment of the formation of highly excited neutral H atoms (H$^{*}$) for strongly driven H$_{2}$. This process, with one electron ionizing and one captured in a Rydberg state, was recently reported in an…

Atomic Physics · Physics 2015-05-28 A. Emmanouilidou , D. Tchitchekova , C. Lazarou , U. Eichmann

Double electron ionisation process occurs when an intense laser pulse interacts with atoms or molecules. Exact {\it ab initio} numerical simulation of such a situation is extremely computer resources demanding, thus often one is forced to…

With a semiclassical quasi-static model we achieve an insight into the complex dynamics of two correlated electrons under the combined influence of a two-center Coulomb potential and an intense laser field. The model calculation is able to…

Atomic and Molecular Clusters · Physics 2009-11-13 J. Liu , D. F. Ye , J. Chen , X. liu

We investigate the Rydberg states generation of Hydrogen atoms with intense laser pulses, by solving the time-dependent Schr\"odinger equation and by means of classical trajectory monte-carlo simulations. Both linearly polarized multi-cycle…

Atomic Physics · Physics 2015-06-22 Bin Zhang , Wenbo Chen , Zengxiu Zhao

We discuss double ionization of atoms in strong laser pulses using a reduced dimensionality model. Following the insights obtained from an analysis of the classical mechanics of the process, we confine each electron to move along the lines…

Atomic Physics · Physics 2008-08-06 Jakub S. Prauzner-Bechcicki , Krzysztof Sacha , Bruno Eckhardt , Jakub Zakrzewski

In the present paper, we develop a semiclassical quasi-static model accounting for molecular double ionization in an intense laser pulse. With this model, we achieve insight into the dynamics of two highly-correlated valence electrons under…

Atomic and Molecular Clusters · Physics 2009-11-13 Di-Fa Ye , Jing Chen , Jie Liu

The yield of neutral excited atoms and low-energy photoelectrons generated by the electron dynamics in the combined Coulomb and laser field after tunneling is investigated. We present results of Monte-Carlo simulations built on the two-step…

Atomic Physics · Physics 2015-05-13 N. I. Shvetsov-Shilovski , S. P. Goreslavski , S. V. Popruzhenko , W. Becker

Understanding Coulomb driven many-body dynamics in ultracold atomic systems far from equilibrium remains an open challenge, particularly when ultrafast excitation channels create competing pathways toward Rydberg gases or ultracold plasmas.…

When ultracold plasma is generated using photonization of laser cooled atoms, some atoms reach only upto Rydberg states. These in turn interact with the free electrons of the plasma and get ionized further. We study the interaction of…

Atomic Physics · Physics 2026-03-18 Satyam Prakash , Ashok S Vudayagiri

We solve the hydrodynamic-ballistic equations of motion for a one-dimensional time-dependent Thomas-Fermi model of Cl_2 exposed to an intense subpicosecond laser field, and observe simultaneous multielectron ionization and molecular…

Atomic Physics · Physics 2009-10-30 Miroslaw Brewczyk , Kazimierz Rzazewski , Charles W. Clark

Using a semi-classical model, we study the formation of highly excited neutral fragments during the fragmentation of $\mathrm{H_3^+}$, a two-electron triatomic molecule, driven by an intense near-IR laser field. To do so, we first formulate…

Atomic Physics · Physics 2016-11-23 A. Chen , C. Lazarou , H. Price , A. Emmanouilidou

We address nonsequential double ionization induced by strong, linearly polarized laser fields of only a few cycles, considering a physical mechanism in which the second electron is dislodged by the inelastic collision of the first electron…

Atomic Physics · Physics 2009-11-10 C. Figueira de Morisson Faria , X. Liu , A. Sanpera , M. Lewenstein

We introduce a scheme to entangle Rydberg ions in a linear ion crystal, using the high electric polarizability of the Rydberg electronic states in combination with mutual Coulomb coupling of ions that establishes common modes of motion.…

Atomic Physics · Physics 2019-10-16 Jonas Vogel , Weibin Li , Arezoo Mokhberi , Igor Lesanovsky , Ferdinand Schmidt-Kaler

We consider the ionisation of atomic hydrogen by a strong infrared field. We extend and study in more depth an existing semi-analytical model. Starting from the time-dependent Schroedinger equation in momentum space and in the velocity…

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