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

Ouchi, T.; Sakai, Kentaro; Fukuzawa, H.; Liu, X.-J.; Higuchi, I.; Tamenori, Y.; Nagaya, K.; Iwayama, H.; Yao, Makoto; Zhang, Dongdong; Ding, Dajun; Kuleff, Alexander I.; Stoychev, Spas D.; Demekhin, Ph. V.; Saitô, Norio; Ueda, Kiyoshi

doi:10.1103/physrevlett.107.053401

Cited by 27 publications

(26 citation statements)

References 26 publications

(45 reference statements)

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“…An analogous unusual process where a double vacancy is filled by two electrons and a single photon is emitted was already known [4], but no three-electron Auger process had been demonstrated at that time. More recently a three-electron Auger process was suggested as a possible explanation of an observed feature in a beam-foil excited C 3+ ion [5], and a related process was more clearly predicted and observed in a rare-gas dimer [6,7].…”

Section: Introductionmentioning

confidence: 97%

Direct observation of three-electron collective decay in a resonant Auger process

et al. 2015

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Section: Introductionmentioning

confidence: 97%

Direct observation of three-electron collective decay in a resonant Auger process

et al. 2015

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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%

“…ICD takes place from the Auger final states that have an inner-valence hole [8]. The branching ratio to these states is, however, only of the order of 10% [9,13,19]. In turn, a well-established method of site-specific excitation is resonant core excitation; using the chemical shift, one can select not only a specific kind of atom but also a specific site of the same kind of atom located at different sites.…”

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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“…Many studies have shown since then that ICD is a very general phenomenon occuring in van der Waals bound (see e.g. [2][3][4][5]) and hydrogen bound systems (see e.g. [6][7][8]).…”

Section: Pacs Numbersmentioning

confidence: 99%

Interatomic-Coulombic-decay-induced recapture of photoelectrons in helium dimers

et al. 2014

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We investigate the onset of photoionization shakeup induced interatomic Coulombic decay (ICD) in He2 at the He + * (n = 2) threshold by detecting two He + ions in coincidence. We find this threshold to be shifted towards higher energies compared to the same threshold in the monomer. The shifted onset of ion pairs created by ICD is attributed to a recapture of the threshold photoelectron after the emission of the faster ICD electron. PACS numbers:Excited ions can get rid of their excess energy via the emission of a photon or an electron. If, however, the excited atom is spatially close to other atoms and the excitation energy is above the ionization threshold of this neighbor, the excess energy can also be transfered to the neighbor where it leads to emission of an electron. This energy transfer process is termed interatomic Coulombic decay (ICD). It was introduced by Cederbaum and coworkers in 1997 [1] and was demonstrated experimentally first for Neon clusters [2] and Neon dimers [3]. The related interatomic Auger transitions in solid matter have ofen been discussed, but broad valence bands, surface/bulk differences and significant electron energy-loss processes do typically preclude a clear assignment of this process for solids. Many studies have shown since then that ICD is a very general phenomenon occuring in van der Waals bound (see e.g. [2][3][4][5]) and hydrogen bound systems (see e.g. [6][7][8]). It can be induced by photoionization (see e.g. [2,3]), photoexcitation [9][10][11][12], Auger decay [13,14], ion impact [15][16][17], and electron impact [18] or as in the present case after shakeup [19]. The most extreme system for which ICD has been reported is the Helium dimer [20,21]. The neutral He dimer is very weakly bound (about 95 neV) and the internuclear distance extends to very large distances, with the mean * Electronic address: doerner@atom.uni-frankfurt.de distance of about 52Å. ICD in He 2 can occur when one of the Helium atoms is ionized and its remaining electron is shaken up to any excited state (He + * (n=2,3...)). In the next step, the He + * (n=2)He contracts and during that nuclear motion it undergoes ICD. The electron of the exited He + relaxes to the ground state and the energy is transfered to the neutral neighbor where the ICD electron is emitted. Finally, the two He + ions Coulomb explode back-to-back: He-He hν −→ He + * -He + e ph ICD − −− → He + + He + + e ph + e ICD Usually, ICD and the subsequent Coulomb explosion is discussed in a two step picture, where the decay is independent from the initial ionization/excitation process. In the present work, we show that close to the ionization/excitation threshold this two step approximation breaks down. Photoelectron and ICD electron interaction can lead to recapture of the photoelectron into a bound state of one of the two ions, which quenches the Coulomb explosion. A direct link between the ionization process and ICD has been discussed in two contexts in the literature so far. The first is the recoil effect, where it has been shown ex...

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

Cited by 27 publications

References 26 publications

Direct observation of three-electron collective decay in a resonant Auger process

Direct observation of three-electron collective decay in a resonant Auger process

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

Interatomic-Coulombic-decay-induced recapture of photoelectrons in helium dimers

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