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An ultrafast mechanism belonging to the family of interatomic Coulombic decay (ICD) phenomena is proposed. When two excited species are present, an ultrafast energy transfer can take place bringing one of them to its ground state and…

During the last 15 years a novel decay mechanism of excited atoms has been discovered and investigated. This so called ''Interatomic Coulombic Decay'' (ICD) involves the chemical environment of the electronically excited atom: the…

Interatomic Coulombic decay (ICD) processes play a crucial role in weakly bound complexes exposed to intense or high-energy radiation. Using large helium nanodroplets, we demonstrate that ICD is efficient even when the droplets are…

Interatomic Coulombic decay (ICD) plays a crucial role in weakly bound complexes exposed to intense or high-energy radiation. So far, neutral or ionic atoms or molecules have been prepared in singly excited electron or hole states which can…

When a vacancy is created in an inner-valence orbital of a dimer of atoms or molecules, the resulting species can undergo interatomic/intermolecular Coulombic decay (ICD): the hole is filled through a relaxation process that leads to a…

Chemical Physics · Physics 2023-05-18 Valentina Parravicini , Thomas-C. Jagau

When weakly-bound complexes are multiply excited by intense electromagnetic radiation, energy can be exchanged between neighboring atoms through a type of resonant interatomic Coulombic decay (ICD). This decay mechanism due to multiple…

Tremendous advances in laser pump-probe techniques open the door for the observation in real time of ultrafast \textit{electronic} processes. Particularly attractive is the visualization of interatomic processes where one can follow the…

Atomic and Molecular Clusters · Physics 2007-05-23 Alexander I. Kuleff , Lorenz S. Cederbaum

Molecular mechanisms that enable collective and upconverted energy transfer from multiple photoacceptors to a non-absorbing spectator reaction center are highly desirable for efficient light-energy utilization. Here, we show that…

Chemical Physics · Physics 2026-03-05 Saroj Barik , Pratikkumar Thakkar , Siddhartha S. Payra , Yash Lenka , Y. Sajeev , G. Aravind

Interatomic Coulombic decay (ICD) is a mechanism which allows microscopic objects to rapidly exchange energy. When the two objects are distant, the energy transfer between the donor and acceptor species takes place via the exchange of a…

We report on the experimental observation of interatomic Coulombic decay (ICD) in pure $^4$He nanoclusters of mean sizes between $N \approx$ 5000 and 30000 and the subsequent scattering of energetic He$^+$ fragments inside the neutral…

Interatomic coulombic decay (ICD) is a relaxation process induced by electronic correlation. In this work we study the ICD process in a two coupled Quantum wells (QWs) nano-structure. We study a simple one-dimensional effective potential…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Tamar Goldzak , Liron Gantz , Ido Gilary , Gad Bahir , Nimrod Moiseyev

We report theory for time-resolved spectator resonant Interparticle Coulombic Decay (ICD) processes. Following excitation by a short extreme ultraviolet pulse, the spectrum of the resonant ICD electron develops. Strong-field ionization is…

Quantum Physics · Physics 2020-04-29 Elke Fasshauer , Lars Bojer Madsen

Interatomic Coulombic decay (ICD) is induced in helium (He) nanodroplets by photoexciting the n=2 excited state of He^+ using XUV synchrotron radiation. By recording multiple coincidence electron and ion images we find that ICD occurs in…

Atomic and Molecular Clusters · Physics 2017-07-24 M. Shcherbinin , A. C. LaForge , V. Sharma , M. Devetta , R. Richter , R. Moshammer , T. Pfeifer , M. Mudrich

We report the first observation of intermolecular Coulombic decay (ICD) in liquid water following inner-valence ionization. By combining a monochromatized table-top high-harmonic source with a liquid micro-jet, we recorded electron-electron…

Atomic and Molecular Clusters · Physics 2022-04-05 Pengju Zhang , Conaill Perry , Tran Trung Luu , Danylo Matselyukh , Hans Jakob Wörner

To exploit the high intensity of laser radiation, we propose to select frequencies at which single-photon absorption is of too low energy and two or more photons are needed to produce states of an atom that can undergo interatomic Coulombic…

Atomic and Molecular Clusters · Physics 2012-01-04 Philipp V. Demekhin , Spas D. Stoychev , Alexander I. Kuleff , Lorenz S. Cederbaum

Atoms and molecules attached to rare gas clusters are ionized by an interatomic autoionization process traditionally termed 'Penning ionization' when the host cluster is resonantly excited. Here we analyze this process in the light of the…

Ionization of matter by energetic radiation generally causes complex secondary reactions which are hard to decipher. Using large helium nanodroplets irradiated by XUV photons, we show that the full chain of processes ensuing primary…

Atomic and Molecular Clusters · Physics 2023-07-26 L. Ben Ltaief , K. Sishodia , S. Mandal , S. De , S. R. Krishnan , C. Medina , N. Pal , R. Richter , T. Fennel , M. Mudrich

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

An excited two-atom system can decay via different competing relaxation processes. If the excess energy is sufficiently high the system may not only relax via spontaneous emission but can also undergo interatomic Coulombic decay (ICD) or…

Quantum Physics · Physics 2022-04-27 Janine Franz , Stefan Yoshi Buhmann

The electron removal and excitation channels in argon dimer target and helium ion projectile collision systems that facilitate interatomic Coulombic decay (ICD) are investigated. We implement an independent-atom and independent-electron…

Atomic and Molecular Clusters · Physics 2026-03-25 Darij Starko , Tom Kirchner
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