Orientation dependence in multiple ionization of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>He</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>Ne</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>induced by fast, highly charged ions: Probing the impact-parameter-dependent ionization probability in 11.37-MeV/u<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi>S</mml:mi><mml:mrow

Kim, H.-K.; Gassert, H.; Titze, J.; Waitz, M.; Voigtsberger, J.; Trinter, Florian; Becht, Jasper; Kalinin, Anton; Neumann, N.; Zhou, Chunlin; Schmidt, L. Ph. H.; Jagutzki, O.; Czasch, A.; Schöffler, M. S.; Merabet, H.; Schmidt‐Böcking, H.; Jahnke, T.; Lüdde, Hans Jürgen; Cassimi, A.; Dørner, R.

doi:10.1103/physreva.89.022704

Cited by 20 publications

(8 citation statements)

References 43 publications

(66 reference statements)

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“…From that time onwards many experimental studies have been carried out using light sources such as synchrotron radiation 5 or free electron lasers 6 . In contrast, ICD studies involving ionization or excitation induced in clusters by particles like ions 7 8 9 or electrons are scarce 10 11 12 though, in principle, electron impact offers the advantage of populating optically forbidden states. However, experimentally one must face a major problem: in the outgoing scattering channel three electrons are present, two ejected ones and the scattered one, which lost an unknown fraction of its energy due to the excitation event.…”

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confidence: 99%

Direct evidence of two interatomic relaxation mechanisms in argon dimers ionized by electron impact

et al. 2016

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In weakly bound systems like liquids and clusters electronically excited states can relax in inter-particle reactions via the interplay of electronic and nuclear dynamics. Here we report on the identification of two prominent examples, interatomic Coulombic decay (ICD) and radiative charge transfer (RCT), which are induced in argon dimers by electron collisions. After initial ionization of one dimer constituent ICD and RCT lead to the ionization of its neighbour either by energy transfer to or by electron transfer from the neighbour, respectively. By full quintuple-coincidence measurements, we unambiguously identify ICD and RCT, and trace the relaxation dynamics as function of the collisional excited state energies. Such interatomic processes multiply the number of electrons and shift their energies down to the critical 1–10 eV range, which can efficiently cause chemical degradation of biomolecules. Therefore, the observed relaxation channels might contribute to cause efficient radiation damage in biological systems.

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confidence: 99%

Direct evidence of two interatomic relaxation mechanisms in argon dimers ionized by electron impact

et al. 2016

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“…Early experiments on ICD using the COLTRIMS technique can be found, for example, in refs , , , , , , , , − , , , and − ; later work in refs , , , , , , , , and − ; and most recent work in refs , , , , , , , and − …”

Section: Experimental Methodsmentioning

confidence: 99%

Interatomic and Intermolecular Coulombic Decay

et al. 2020

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Interatomic or intermolecular Coulombic decay (ICD) is a nonlocal electronic decay mechanism occurring in weakly bound matter. In an ICD process, energy released by electronic relaxation of an excited atom or molecule leads to ionization of a neighboring one via Coulombic electron interactions. ICD has been predicted theoretically in the mid nineties of the last century, and its existence has been confirmed experimentally approximately ten years later. Since then, a number of fundamental and applied aspects have been studied in this quickly growing field of research. This review provides an introduction to ICD and draws the connection to related energy transfer and ionization processes. The theoretical approaches for the description of ICD as well as the experimental techniques developed and employed for its investigation are described. The existing body of literature on experimental and theoretical studies of ICD processes in different atomic and molecular systems is reviewed.

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“…The first of them has the highest charge and impact velocity which-to our knowledge-can be currently reached at the GSI (Darmstadt, Germany). The second was already used in an experiment [4] on the collisional fragmentation of the He 2 dimers into singly charged helium ions.…”

Section: Introductionmentioning

confidence: 99%

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Fragmentation of the 4He2 dimer with the emission of three or four electrons by fast highly charged projectiles

Najjari

Zhang

et al. 2023

Front. Phys.

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We investigate the fragmentation of the helium dimer, 4He2, into He2+ + He+ and He2+ + He2+ ions in collisions with fast highly charged projectiles. We discuss the main physical mechanisms driving these processes. We explore the energy and angular distributions of the ionic fragments produced during collisions of the dimer with 1 GeV/u U92+ and 11.37 MeV/u S14+ projectiles and also present the total fragmentation cross-sections. According to our results, the fragmentation in these collisions is fully dominated by the direct removal of three or four electrons from the dimer by the projectile in a single collision. Our results also suggest that the total fragmentation cross-sections depend on the binding energy IHe2 of the dimer, being roughly proportional to IHe2.

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Orientation dependence in multiple ionization ofHe2andNe2induced by fast, highly charged ions: Probing the impact-parameter-dependent ionization probability in 11.37-MeV/uS

Cited by 20 publications

References 43 publications

Direct evidence of two interatomic relaxation mechanisms in argon dimers ionized by electron impact

Direct evidence of two interatomic relaxation mechanisms in argon dimers ionized by electron impact

Interatomic and Intermolecular Coulombic Decay

Fragmentation of the 4He2 dimer with the emission of three or four electrons by fast highly charged projectiles

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