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Femtosecond extreme ultraviolet wave packet interferometry (XUV-WPI) was applied to study resonant inter-atomic Coulombic decay (ICD) in the HeNe dimer. The high demands on phase stability and sensitivity for vibronic XUV-WPI of…

A single-atom 'double-slit' experiment is realized by photo-ionizing Rubidium atoms using two independent low power lasers. The photoelectron wave of well-defined energy recedes to the continuum either from the 5P or 6P states in the same…

Atomic Physics · Physics 2019-01-17 James Pursehouse , Andrew James Murray , Jonas Wätzel , Jamal Berakdar

Controlling bond breaking is a long-standing goal in molecular physics. Infrared nanocavities are currently being developed for reaching exotic coupling regimes of cavity QED with a few molecules, but it is not well understood how chemical…

Quantum Physics · Physics 2025-11-24 Johan F. Triana , Felipe Herrera

Photoexcitation of van der Waals complexes can lead to several decay pathways depending on the nature of the potential energy surfaces. Upon excitation of a chromophore in a complex, ionization of its weakly bound neighbour via energy…

Chemical Physics · Physics 2022-01-14 Namitha Brijit Bejoy , Nitin. K Singh , Balanarayan Pananghat , G. Naresh Patwari

Light-induced energy confinement in nanoclusters via plasmon excitations influences applications in nanophotonics, photocatalysis, and the design of controlled slow electron sources. The resonant decay of these excitations through the…

Atomic and Molecular Clusters · Physics 2023-06-21 Rasheed Shaik , Hari R. Varma , Mohamed El-Amine Madjet , Fulu Zheng , Thomas Frauenheim , Himadri S. Chakraborty

We investigate simultaneous multiphoton-multiatom processes in atomic gases exposed to laser fields under specific frequency conditions, where multiple atoms are simultaneously excited through the absorption of one laser photon each. These…

Atomic Physics · Physics 2025-04-09 Yongle Yu

Using synchrotron radiation we simultaneously ionize and excite one helium atom of a helium dimer (He_2) in a shakeup process. The populated states of the dimer ion (i.e. He^[*+](n = 2; 3)-He) are found to deexcite via interatomic coulombic…

Various theories have predicted the deep Dirac levels (DDLs) in atoms for many years. However, the existence of the DDL is still under debating, and need to be confirmed experimentally. With the development of high intensive lasers,…

Nuclear Experiment · Physics 2017-03-27 Xiaopeng Zhang , Changbo Fu , Dechang Dai

We show that if the laser is intense enough, it may always ionize an atom or induce transitions between discrete energy levels of the atom, no matter what is its frequency. It means in the quantum transition of an atom interacting with an…

Quantum Physics · Physics 2007-05-23 Qi-Ren Zhang

Low-energy-electron emission from resonant Auger final states via intermolecular Coulombic decay (RA-ICD) has been previously described as a promising scenario for controlling radiation damage for medical purposes, but has so far only been…

In interatomic Coulombic electron capture, the capture of a free electron at an atomic center is accompanied by the radiationless transfer of the excess energy to a neighboring atom of different species, leading to ionization of the latter.…

Atomic Physics · Physics 2023-04-19 S. Remme , A. B. Voitkiv , C. Müller

A recent report by Barik et al. [Nature Chemistry 14, 1098, 2022] on ambient-light-induced intermolecular Coulombic decay (ICD) in unbound pyridine monomers proposes the formation of a pyridine cation via intermolecular Coulombic decay…

Chemical Physics · Physics 2025-11-07 Shaivi Kesari , Amol Tagad , G. Naresh Patwari

The paper investigates cold molecules formation in the photoassociation of two cold atoms by a strong laser pulse applied at short interatomic distances, which lead to a molecular dynamics taking place in the light-induced (adiabatic)…

Quantum Physics · Physics 2009-07-23 M. Vatasescu

The autoionization dynamics of superexcited superfluid He nanodroplets doped with Na atoms is studied by extreme-ultraviolet (XUV) time-resolved electron spectroscopy. Following excitation into the higher-lying droplet absorption band, the…

We present an analytical model for intermolecular Coulombic electron capture (ICEC) which includes the internal nuclear dynamics of the molecules involved. In ICEC, an electron attaches to an atom or molecule by transferring excess energy…

Quantum Physics · Physics 2026-03-09 Elena M. Jahr , Elke Fasshauer

As opposed to purely molecular systems where electron dynamics proceed only through intramolecular processes, weakly bound complexes such as He droplets offer an environment where local excitations can interact with neighbouring embedded…

Atomic and Molecular Clusters · Physics 2021-04-15 A. C. LaForge , M. Shcherbinin , F. Stienkemeier , R. Richter , R. Moshammer , T. Pfeifer , M. Mudrich

Low-energy electrons (LEEs) are known to be effective in causing strand breaks in DNA. Recent experiments show that an important direct source of LEEs is the intermolecular Coulombic decay (ICD) process. Here we propose a new cascade…

Atomic and Molecular Clusters · Physics 2014-02-14 Kirill Gokhberg , Premysl Kolorenc , Alexander I. Kuleff , Lorenz S. Cederbaum

Laser spectroscopy of cold and trapped molecular ions is a powerful tool for fundamental physics, including the determination of fundamental constants, the laboratory test for their possible variation, and the search for a possible electric…

Atomic Physics · Physics 2016-02-26 Fabian Wolf , Yong Wan , Jan C. Heip , Florian Gebert , Chunyan Shi , Piet O. Schmidt

Electronically excited atoms or molecules in an environment are often subject to interatomic/intermolecular Coulombic decay (ICD) and/or electron transfer mediated decay (ETMD) mechanisms. A few of the numerous variables that can impact…

Chemical Physics · Physics 2022-09-15 Ravi Kumar , Dr. Nayana Vaval

Filming atomic motion within molecules is an active pursuit of molecular physics and quantum chemistry. A promising method is laser-induced Coulomb Explosion Imaging (CEI) where a laser pulse rapidly ionizes many electrons from a molecule,…