Visualizing coherent vibrational motion in the molecular iodine B state using ultrafast XUV transient-absorption spectroscopy

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dc.contributor.authorMarggi Poullaín, Sonia
dc.contributor.authorKobayashi, Yuki
dc.contributor.authorChang, Kristina
dc.contributor.authorLeone, Stephen
dc.date.accessioned2024-01-15T10:15:00Z
dc.date.available2024-01-15T10:15:00Z
dc.date.issued2021
dc.description.abstractAttosecond probing of core-level electronic transitions in molecules provides a sensitive tool for real-time observation of chemical dynamics. Here, we employ ultrafast extreme-ultraviolet (XUV) transient-absorption spectroscopy to investigate the excited state electronic and nuclear dynamics in a prototype molecule, I2. A few-femtosecond visible pump pulse is employed to excite the I2 molecule and an attosecond XUV pulse is used to probe the dynamics through iodine-4d core-to-valence transitions. A highly extended vibrational wave packet (ν′=10–50,ν′max=25) is prepared by one-photon absorption in the valence excited B3Π0+u state of I2 and its motion is directly mapped due to the strong shift of the XUV core-level transition with internuclear separation. Through the imaging of this vibrational motion, we directly reconstruct the transition energy between the valence and the core-excited states as a function of internuclear distance. Besides single-photon dynamics, distinct direct dissociation pathways arising from two-photon pump absorption are also revealed.
dc.description.departmentDepto. de Química Física
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.statuspub
dc.identifier.citationPoullain, Sonia M., et al. «Visualizing Coherent Vibrational Motion in the Molecular Iodine B 3 Π 0 + u State Using Ultrafast XUV Transient-Absorption Spectroscopy». Physical Review A, vol. 104, n.o 2, agosto de 2021, p. 022817. https://doi.org/10.1103/PhysRevA.104.022817.
dc.identifier.doi10.1103/PhysRevA.104.022817
dc.identifier.issn2469-9926
dc.identifier.officialurlhttps://doi.org/10.1103/PhysRevA.104.022817
dc.identifier.urihttps://hdl.handle.net/20.500.14352/92998
dc.journal.titlePhysical Review A
dc.language.isoeng
dc.page.initial022817
dc.publisherAmerican Physical Society
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.cdu544
dc.subject.keywordAbsorption spectroscopy
dc.subject.keywordCore levels
dc.subject.keywordDynamics
dc.subject.keywordIodine
dc.subject.keywordMolecules
dc.subject.keywordOptical pumping
dc.subject.keywordParticle beams
dc.subject.keywordPhotons
dc.subject.keywordTwo photon processes
dc.subject.keywordUltrafast lasers
dc.subject.ucmQuímica física (Física)
dc.subject.unesco2206 Física Molecular
dc.subject.unesco2206.07-1 Espectroscopia láser
dc.titleVisualizing coherent vibrational motion in the molecular iodine B state using ultrafast XUV transient-absorption spectroscopy
dc.typejournal article
dc.type.hasVersionAM
dc.volume.number104
dspace.entity.typePublication
relation.isAuthorOfPublication6764e695-b0b9-4c0b-ad04-46d597f206ea
relation.isAuthorOfPublication.latestForDiscovery6764e695-b0b9-4c0b-ad04-46d597f206ea
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