Collective Interatomic Decay of Multiple Vacancies in Clusters

Averbukh, Vitali; Kolorenč, Přemysl

doi:10.1103/physrevlett.103.183001

Cited by 28 publications

(30 citation statements)

References 20 publications

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“…It is now well known that ICD appears everywhere and transfers the energy and the charge from the excited species to the environment surrounding it. Also, it is known that there are many variants of ICD, such as ICD from satellite states [4][5][6][7], ICD after Auger decay [8][9][10][11][12][13][14], resonant ICD [15][16][17] where inner-valence excited states decay via ICD-like spectator decay, and three-electron ICD [18,19] where two inner-valence holes in a species are filled by ICD in which three electrons are involved. Another exotic variant, called electron-transfer-mediated decay (ETMD), was also predicted [20] and observed [21,22].…”

Section: Introductionmentioning

confidence: 99%

Efficient site-specific low-energy electron production via interatomic Coulombic decay following resonant Auger decay in argon dimers

et al. 2013

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We identified interatomic Coulombic decay (ICD) channels in argon dimers after spectator-type resonant Auger decay 2p −1 3d → 3p −2 3d,4d in one of the atoms, using momentum-resolved electron-ion-ion coincidence. The results illustrate that the resonant core excitation is a very efficient way of producing slow electrons at a specific site, which may cause localized radiation damage. We find also that ICD rate for 3p −2 4d is significantly lower than that for 3p −2 3d.

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Section: Introductionmentioning

confidence: 99%

Efficient site-specific low-energy electron production via interatomic Coulombic decay following resonant Auger decay in argon dimers

et al. 2013

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“…The relevance of such ICDtriggered energy or charge transfer processes with many different fields such as chemistry, biochemistry, and biophysics has also been noted [2][3][4][5][6][7][8]. ICD is of current interest also in attosecond and short wavelength free electron laser sciences [2,3,[9][10][11].…”

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confidence: 96%

“…The inner-valence double-vacancy state may be subject to 3e ICD, in which two valence electrons fill the two vacancies and the third electron is ejected as an ICD electron. Although the 3e ICD was predicted [10,12,17], it has never been observed. One can expect that the 3e ICD is by far slower than the two-electron (2e) ICD because it relies on higher order electron correlations.…”

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confidence: 98%

Three-Electron Interatomic Coulombic Decay from the Inner-Valence Double-Vacancy States in NeAr

et al. 2011

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We have unambiguously identified interatomic Coulombic decay in NeAr from the inner-valence double-vacancy state Ne-Ar(2+)(3s(-2)) to outer-valence triple-vacancy states Ne(+)(2p(-1))-Ar(2+)(3p(-2)) by momentum-resolved electron-ion multicoincidence. This is the first observation of interatomic Coulombic decay where three electrons (3e) participate. The results suggest that this 3e interatomic Coulombic decay is significantly faster than other competing processes like fluorescence decay and charge transfer via curve crossing.

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“…In the case when the de-excitation energy of an excited atom is insufficient to ionize another atom, a process related to the recently discussed collective-ICD [19] can take place. In the collective-ICD process two inner-valence ionized species de-excite simultaneously transferring their "collective" energy to a third neighbor and ionizing it.…”

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Ultrafast Interatomic Electronic Decay in Multiply Excited Clusters

et al. 2010

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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 ionizing the other one. It is shown that if large homoatomic clusters are exposed to an ultrashort and intense laser pulse whose photon energy is in resonance with an excitation transition of the cluster constituents, the large majority of ions will be produced by this ICD mechanism rather than by two-photon ionization. A related collective-ICD process that is operative in heteroatomic systems is also discussed.PACS numbers: 31.70. Hq, 32.80.Rm, 32.80.Wr The rapid development during the last decades of very intense light sources with extreme short pulse duration opened a new era in the study of radiation-matter interaction. Studying the interaction of intense fields with matter brought to the discovery of a whole plethora of new physical phenomena, like high-harmonic generation, above-threshold ionization, or tunneling ionization, to name only a few. In the same time, the progress in generating extremely short pulses gave the scientific community a powerful tool to monitor and control the electron dynamics in atomic and molecular systems and to study processes that take place on a time scale in which the electronic motion is still disentangled from the slower nuclear dynamics (for recent reviews see, e.g., Refs. [1, 2]). A number of free-electron lasers are in operation today providing extremely bright, coherent, and ultrashort pulses in the VUV regime. Exposed to such highly intense pulses, atomic and molecular systems will absorb a large amount of photons triggering various dynamical effects. In this letter we will restrict ourselves to situations where the single-photon energy in the pulse is not high enough to directly ionize the system. It is well known that even in this case the system can be ionized by a multiphoton ionization mechanism. The multiphoton ionization (MPI) results from the ability of quantum systems to absorb several and even many photons, whose individual energies are insufficient to ionize the system. The combined energy of the absorbed photons, though, suffices to eventually eject one or many electrons from the system. During the last decade the MPI has been intensively studied also in composite systems, like clusters, employing the new powerful laser sources (for a review see, e.g. Ref.[3]). However, little attention was paid to other mechanisms that can lead to a multiple ionization in an atomic or molecular cluster irradiated by an intense laser pulse.In this letter we aim at discussing a hitherto unrecognized mechanism for producing ionized species in homoatomic or homomolecular clusters exposed to an intense laser pulse, which in many cases can be by far One of the constituents of the system de-excites transferring the energy to the neighbor which uses it to emit its excited electron.the dominating one. For simplicity we will consider an atomic cluste...

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Collective Interatomic Decay of Multiple Vacancies in Clusters

Cited by 28 publications

References 20 publications

Efficient site-specific low-energy electron production via interatomic Coulombic decay following resonant Auger decay in argon dimers

Efficient site-specific low-energy electron production via interatomic Coulombic decay following resonant Auger decay in argon dimers

Three-Electron Interatomic Coulombic Decay from the Inner-Valence Double-Vacancy States in NeAr

Ultrafast Interatomic Electronic Decay in Multiply Excited Clusters

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