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oai:docta.ucm.es:20.500.14352/944222024-12-05T17:01:11Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Corrales, María Eugenia author González-Vázquez, Jesús author Balerdi, Garikoitz author Sola Reija, Ignacio author Nalda, Rebeca de author Bañares Morcillo, Luis author 2014 Experiments aimed at understanding ultrafast molecular processes are now routine, and the notion that external laser fields can constitute an additional reagent is also well established. The possibility of externally controlling a reaction with radiation increases immensely when its intensity is sufficiently high to distort the potential energy surfaces at which chemists conceptualize reactions take place. Here we explore the transition from the weak- to the strong-field regimes of laser control for the dissociation of a polyatomic molecule, methyl iodide. The control over the yield of the photodissociation reaction proceeds through the creation of a light-induced conical intersection. The control of the velocity of the product fragments requires external fields with both high intensities and short durations. This is because the mechanism by which control is exerted involves modulating the potentials around the light-induced conical intersection, that is, creating light-induced potentials. Corrales, M. E., et al. «Control of Ultrafast Molecular Photodissociation by Laser-Field-Induced Potentials». Nature Chemistry, vol. 6, n.o 9, septiembre de 2014, pp. 785-90. https://doi.org/10.1038/nchem.2006. 1755-4330 10.1038/nchem.2006 https://hdl.handle.net/20.500.14352/94422 1755-4349 https://doi.org/10.1038/nchem.2006 Control of ultrafast molecular photodissociation by laser-field-induced potentials