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Absolute control over the quantum yield of a photodissociation reaction mediated by nonadiabatic couplings

dc.contributor.authorSola Reija, Ignacio
dc.contributor.authorGarcía Vela, Alberto
dc.date.accessioned2025-01-13T10:01:06Z
dc.date.available2025-01-13T10:01:06Z
dc.date.issued2024
dc.description.abstractControl of molecular reaction dynamics with laser pulses has been developed in the last decades. Among the different magnitudes whose control has been actively pursued, the branching ratio between different product channels constitutes the clearest signature of quantum control. In polyatomic molecules, the dynamics in the excited state is quagmired by non-adiabatic couplings, which are not directly affected by the laser, making control over the branching ratio a very demanding challenge. Here we present a control scheme for the CH3I photodissociation in the A band, that modifies the quantum yield of the two fragmentation channels of the process. The scheme relies on the optimized preparation of an initial superposition of vibrational states in the ground potential, which further interfere upon the excitation with a broad pump pulse. This interference can suppress any of the channels, regardless of its dominance, and can be achieved over the whole spectral range of the A band. Furthermore, it can be accomplished without strong fields or direct intervention during the dynamics in the excited states: the whole control is predetermined from the outset. The present work thus opens the possibility of extensive and universal control of the channel branching ratio in complex photodissociation processes.
dc.description.departmentDepto. de Química Física
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación
dc.description.statuspub
dc.identifier.citationIgnacio R. Sola, Alberto García-Vela, Absolute control over the quantum yield of a photodissociation reaction mediated by nonadiabatic couplings, Chemical Science, Volume 15, Issue 37, 2024, Pages 15255-15262, ISSN 2041-6520, https://doi.org/10.1039/d4sc03235g.
dc.identifier.doi10.1039/d4sc03235g
dc.identifier.officialurlDOI https://doi.org/10.1039/D4SC03235G
dc.identifier.relatedurlhttps://pubs.rsc.org/en/content/articlelanding/2024/sc/d4sc03235g
dc.identifier.urihttps://hdl.handle.net/20.500.14352/113885
dc.journal.titleChemical Science
dc.language.isoeng
dc.page.final15262
dc.page.initial15255
dc.publisherRSC
dc.relation.projectIDPID2021-122796NB- I00
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.ucmQuímica física (Química)
dc.subject.ucmQuímica física (Física)
dc.subject.unesco2307 Química Física
dc.subject.unesco2206 Física Molecular
dc.titleAbsolute control over the quantum yield of a photodissociation reaction mediated by nonadiabatic couplings
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number15
dspace.entity.typePublication
relation.isAuthorOfPublicationd16d672c-129d-4c35-a4cd-af6fcb356402
relation.isAuthorOfPublication.latestForDiscoveryd16d672c-129d-4c35-a4cd-af6fcb356402

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