Slow Photoelectron Imaging

Nicole, C.; Sluimer, I.; Roşca-Prună, F.; Warntjes, Marcel; Vrakking, Marc J. J.; Bordas, C.; Texier, F.; Robicheaux, F.

doi:10.1103/physrevlett.85.4024

Cited by 65 publications

(53 citation statements)

References 12 publications

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“…In the latter case, our results are analyzed within the framework of the semiclassical model described in a series of papers by Kondratovich and Ostrovsky [8][9][10][11]. Some of the experimental results presented in this article have already been presented as Letters [12,13]. Their detailed interpretation has been discussed, respectively, in Refs.…”

Section: Introductionmentioning

confidence: 88%

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Atomic photoionization processes under magnification

et al. 2004

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Recently, classical simulations of threshold photoionization in the presence of an electric field have shown that a clear distinction between direct and indirect trajectories followed by the outgoing electron can be observed in the patterns of electron impacts on a two-dimensional detector. Subsequently, slow photoelectron imaging experiments have been reported where this distinction could be observed in atomic xenon. Furthermore, using a magnifying electrostatic lens to improve the velocity-map imaging technique, oscillatory patterns were observed modulating the classical envelope that was measured in the experiments of Nicole et al. [Phys. Rev. Lett. 88, 133001 (2002)]. This extension of slow photoelectron imaging, called photoionization microscopy, relies on the existence of interferences between various trajectories by which the electron moves from the atom to the plane of observation. In this article we present the main experimental results obtained both in slow photoelectron imaging and in photoionization microscopy. The formation of the interference pattern is discussed in the framework of a semiclassical model that is described in detail elsewhere. The qualitative information that can be drawn from the experiments is discussed, and the potential applications of photoionization microscopy are considered. Particular attention is paid to the role of continuum Stark resonances that appear between the saddle point in the Coulombϩdc field potential and the field-free ionization limit.

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Section: Introductionmentioning

confidence: 88%

“…The results of two-dimensional imaging experiments change dramatically when slow photoelectrons resulting from the photoionization of neutral atoms or molecules are detected [12]. In Fig.…”

Section: From Velocity-map Imaging To Slow Photoelectron Imagingmentioning

confidence: 99%

Atomic photoionization processes under magnification

et al. 2004

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“…Neumark and coworkers [30] have adapted a method known as 'slow electron velocity imaging', which was pioneered by Vrakking and coworkers [31], to high-resolution photoelectron spectroscopy over an extended energy range. This technique is a compromise between VMI and ZEKE, borrowing advantages and disadvantages from each, and relies on reducing the total available energy E to make ÁE/E as small as possible.…”

Section: Sevimentioning

confidence: 99%

Picosecond time-resolved photoelectron spectroscopy as a means of gaining insight into mechanisms of intramolecular vibrational energy redistribution in excited states

Reid

2008

International Reviews in Physical Chemistry

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We consider the information that can be obtained from time-resolved photoelectron spectroscopy studies of intramolecular vibrational energy redistribution (IVR) in excited states of molecules, focusing on picosecond time-resolved studies of IVR in the intermediate regime. We show that time-resolved measurements may tell us as much about the experimental conditions as they do about the dynamics under examination. We show that carefully controlled picosecond time-resolved photoelectron studies are becoming feasible and that these, combined with robust calculations of Franck-Condon factors, may point the way forward in the quest to understand excited state IVR.

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“…The technique of velocity-map imaging has been assessed as a robust method of determining PADs [63] and its capabilities extended through the use of slow-electron velocity-map imaging (SEVI) [14,[64][65][66], which improves energy resolution, and tomographic reconstruction of the measured two-dimensional images [67,68], which enables a variety of polarization geometries to (1) is then given by L max ¼ 2(n þ m) so that the more photons are involved the greater the observed anisotropy can be up to the molecular frame limit; this is a consequence of the fact that an aligned subset of molecules will be prepared in the pump step. Although this provides a significant advantage to the use of multiple photons, this is mitigated by the fact that unwanted mutiphoton effects may contribute to the observations; this problem becomes more serious when short laser pulses are used, as discussed in Sections 4 and 5.…”

Section: Molecular Physics 135mentioning

confidence: 99%

Photoelectron angular distributions: developments in applications to isolated molecular systems

Reid¹

2012

Molecular Physics

110

102

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The last decade has seen photoelectron angular distributions from isolated molecules used for an increasing variety of purposes, including examining details of electron correlation, demonstrating electron diffraction as a structural probe of single molecules, and probing photochemical processes. In this article these developments are reviewed and it is shown that the stage is set for another decade of innovation in which we can expect to see exciting results from pump-probe experiments using the emerging XUV and X-ray free-electron laser sources.

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Slow Photoelectron Imaging

Cited by 65 publications

References 12 publications

Atomic photoionization processes under magnification

Atomic photoionization processes under magnification

Picosecond time-resolved photoelectron spectroscopy as a means of gaining insight into mechanisms of intramolecular vibrational energy redistribution in excited states

Photoelectron angular distributions: developments in applications to isolated molecular systems

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