Time-resolved photoelectron imaging of the photodissociation of I2−

Davis, Alison V.; Wester, Roland; Bragg, Arthur E.; Neumark, Daniel M.

doi:10.1063/1.1536617

Cited by 95 publications

(76 citation statements)

References 24 publications

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“…The first anion TRPEI experiments were reported by Davis et al 267 in 2003, in which I 2 -dissociation along the A′ 2 Π g,1/2 state following absorption at 793 nm was examined. With a dissociation lifetime well-established from previous FPES studies, I 2 -presented a useful standard for this new application.…”

Section: Photoelectron Angular Distributionsmentioning

confidence: 99%

Femtosecond Time-Resolved Photoelectron Spectroscopy

2004

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Access and use of this website and the material on it are subject to the Terms and Conditions set forth at NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=12338387&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=12338387&lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca.

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Section: Photoelectron Angular Distributionsmentioning

confidence: 99%

Femtosecond Time-Resolved Photoelectron Spectroscopy

2004

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“…Several recent photoelectron studies on conjugated anions have shown that photoexcitation of resonances followed by ground electronic state recovery is a very efficient process. 15,20 Alternatively, dissociation can occur directly on the potential energy surface of the resonance if it is repulsive, 21 or from the ground electronic state provided there is an efficient internal conversion route and the total vibrational energy exceeds the bond 4 dissociation energy. 22 In the latter case, the dissociation products can provide insight into the ground state chemical transformations.…”

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confidence: 99%

Charged Particle Imaging of the Deprotonated Octatrienoic Acid Anion: Evidence for a Photoinduced Cyclization Reaction

West

Bull

Verlet

2016

J. Phys. Chem. Lett.

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. (2016) 'Charged particle imaging of the deprotonated octatrienoic acid anion : evidence for a photoinduced cyclization reaction.', The journal of physical chemistry letters., 7 (22). pp. 4635-4640. Further information on publisher's website:https://doi.org/10.1021/acs.jpclett.6b02302Publisher's copyright statement:This document is the Accepted Manuscript version of a Published Work that appeared in nal form in The journal of physical chemistry letters, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the nal edited and published work see https://doi.org/10.1021/acs.jpclett.6b02302Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. (Figure 1) was generated by electrospray ionisation, mass-selected and intersected with laser pulses (~5 ns duration) at 4.13 eV (300 nm) or 4.66 eV (266 nm) at the centre of a perpendicular velocity-map imaging (VMI) spectrometer. 23,24 The VMI spectrometer has been optimised to perform photoelectron spectroscopy by gating the imaging detector with ~100 ns gate pulse and reconstructing the raw image. 25 However, the same perpendicular VMI spectrometer can also be used to image other charged species, such as H -. Supporting ground electronic structure calculations were performed at the G4 5 level of theory and resonance energetics computed at multi-state XCMQDPT2 level of theory. 26,27 The photoelectron spectra of [C7H9-CO2] -taken at hv = 4.13 eV and 4.66 eV are shown in Figure 1(a) and (b), respectively. The photoelectron spectra are dominated by a peak at low electron kinetic energy, eKE, which is generally indicative of the indirect electron loss process of thermionic emission. 15,20,28,29 In addition to this low eKE peak, there are several minor features at higher eKE. In the hν = 4.13 eV spectrum, the low eKE peak has a shoulder that extends up to ~1.4 eV and a weak feature that peaks at eKE ~ 2.5 eV as indicated by the asterisk in Figure 1(a). The photoelectron spectrum at hν = 4.66 eV, shown in Figure 1(b), is broadly similar, although the shoulder to the dominating low eKE peak is larger than at hν = 4.13 eV and extends to eKE ~1.9 eV, which is consistent with a direct photodetachment process. The hν = 4.66 eV spectrum does not, however, show the clear peak around eKE ~ 2.5 eV (or at eKE ~ 3.0 eV taking into account the additional photon energy).In addition to the peak at eKE ~ 2.5 eV in the hν = 4.13 eV photoelectron spectrum, a discernible peak is present at eKE ~ 3.3 eV, as indicated by the arrow in Fig...

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“…As it dissociates, the laser field continues to interact with it, generating a coherent superposition of ground (gerade) and excited (ungerade) states; this therefore establishes a time-dependent electron localization. This oscillation of electron density eventually ceases as the nuclei get far enough apart that the oscillation period becomes very large in time or the coherence of the electronic wavefunction is destroyed (incidentally, such superpositions can be quite long-lived [39,40]). …”

Section: Cep Control Of Electron Localization In Moleculesmentioning

confidence: 99%

Classical and quantum control of electrons using the carrier‐envelope phase of strong laser fields

Abel

Neumark

Leone

et al. 2011

Laser & Photonics Reviews

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Electrons are among the lightest quantum particles in nature, yet they are of paramount importance in any kind of chemical reaction as they are the essence of molecular bonds. For several years, laser fields have been used towards the fi- nal goal of controlling chemical reaction dynamics. While early experiments focused mainly on the control of the internuclear wavefunction of rather heavy molecules, advances in short- pulse laser technology now allow the control of lighter molecules all the way down to hydrogen and even the direct control of electrons and their quantum wavefunctions. In this context, the stabilization and control of the carrier-envelope phase (CEP) of laser pulses has been one of the crucial technological advances that set off a revolution in ultrafast laser science. The authors review and summarize some of the past and current experimen- tal achievements and theoretical ideas on CEP laser control of electrons. It will become clear that in some cases, depending on the control scenario, electrons can be considered to behave as classical particles and the control of their trajectories follow the laws of classical Newtonian mechanics while in other cases, the quantum nature of electrons is directly exploited to steer electron dynamics by means of quantum interference

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Time-resolved photoelectron imaging of the photodissociation of I2−

Cited by 95 publications

References 24 publications

Femtosecond Time-Resolved Photoelectron Spectroscopy

Femtosecond Time-Resolved Photoelectron Spectroscopy

Charged Particle Imaging of the Deprotonated Octatrienoic Acid Anion: Evidence for a Photoinduced Cyclization Reaction

Classical and quantum control of electrons using the carrier‐envelope phase of strong laser fields

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