Fluorescence cascades evoked by resonant interatomic Coulombic decay of inner-valence excited neon clusters

Hans, Andreas; Ltaief, Ltaief Ben; Förstel, Marko; Schmidt, Philipp; Ozga, Christian; Reiß, Philipp; Holzapfel, Xaver; Küstner-Wetekam, Catmarna; Wiegandt, Florian; Trinter, Florian; Hergenhahn, U.; Jahnke, T.; Dørner, R.; Ehresmann, A.; Demekhin, Ph. V.; Knie, André

doi:10.1016/j.chemphys.2016.06.016

Cited by 9 publications

(11 citation statements)

References 36 publications

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“…This resonant ICD (RICD) can be characterized by the behaviour of the excited electron: it either participates in the decay process or not. The respective processes are called participator RICD (pRICD) [37] and spectator RICD (sRICD) [37][38][39][40][41][42]. In this work, we will focus on the sRICD signal: Unit A is excited from the inner valence.…”

Section: Introductionmentioning

confidence: 99%

Time-resolved spectroscopy of interparticle Coulombic decay processes

Faßhauer

Madsen

2020

Phys. Rev. A

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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 imagined to quench the decay at different time delays and to initiate regular ICD.In this latter process, the ICD electron signal can be measured without interference effects. The typical lifetimes of ICD processes allow for the observation of oscillations of the time-and energy-differential ionization probability. We propose to utilize this oscillation to measure lifetimes of electronic decay processes.

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Section: Introductionmentioning

confidence: 99%

Time-resolved spectroscopy of interparticle Coulombic decay processes

Faßhauer

Madsen

2020

Phys. Rev. A

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“…The maxima appear due to the non-local autoionization process termed resonant interatomic Coulombic decay. Reprinted from Chemical Physics 482, 165–168, Copyright (2017) [ 44 ], with permission from Elsevier.…”

Section: Figurementioning

confidence: 99%

Extreme Ultraviolet to Visible Dispersed Single Photon Detection for Highly Sensitive Sensing of Fundamental Processes in Diverse Samples

et al. 2018

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The detection of a single photon is the most sensitive method for sensing of photon emission. A common technique for single photon detection uses microchannel plate arrays combined with photocathodes and position sensitive anodes. Here, we report on the combination of such detectors with grating diffraction spectrometers, constituting a low-noise wavelength resolving photon spectroscopy apparatus with versatile applicability. We recapitulate the operation principle of such detectors and present the details of the experimental set-up, which we use to investigate fundamental mechanisms in atomic and molecular systems after excitation with tuneable synchrotron radiation. Extensions for time and polarization resolved measurements are described and examples of recent applications in current research are given.

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“…In other noble gases, mostly in Ar, emissions in the ultraviolet spectral range have been attributed to charge transfer processes in ion-atom collisions [25][26][27][28][29]. Recently [30][31][32], fluorescence detection has been successfully introduced as a tool to identify and characterize interatomic processes in clusters.…”

Section: Introductionmentioning

confidence: 99%

Direct evidence for radiative charge transfer after inner-shell excitation and ionization of large clusters

et al. 2018

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We directly observe radiative charge transfer (RCT) in Ne clusters by dispersed vacuum-ultraviolet photon detection. The doubly ionized Ne 2+ -Ne n 1 -initial states of RCT are populated after resonant 1s-3p photoexcitation or 1s photoionization of Ne n clusters with n 2800 á ñ » . These states relax further producing Ne + -Ne + -Ne n 2 -final states, and the RCT photon is emitted. Ab initio calculations assign the observed RCT signal to the Ne 2p D Ne ninitial state, while transitions from other possible initial states are proposed to be quenched by competing relaxation processes. The present results are in agreement with the commonly discussed scenario, where the doubly ionized atom in a noble gas cluster forms a dimer which dissipates its vibrational energy on a picosecond timescale. Our study complements the picture of the RCT process in weakly bound clusters, providing information which is inaccessible by charged particle detection techniques.

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Fluorescence cascades evoked by resonant interatomic Coulombic decay of inner-valence excited neon clusters

Cited by 9 publications

References 36 publications

Time-resolved spectroscopy of interparticle Coulombic decay processes

Time-resolved spectroscopy of interparticle Coulombic decay processes

Extreme Ultraviolet to Visible Dispersed Single Photon Detection for Highly Sensitive Sensing of Fundamental Processes in Diverse Samples

Direct evidence for radiative charge transfer after inner-shell excitation and ionization of large clusters

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