Femtosecond XUV–IR induced photodynamics in the methyl iodide cation
dc.bibliographicCitation.firstPage | 073023 | eng |
dc.bibliographicCitation.issue | 7 | eng |
dc.bibliographicCitation.journalTitle | New journal of physics : the open-access journal for physics | eng |
dc.bibliographicCitation.volume | 23 | eng |
dc.contributor.author | Murillo-Sánchez, Marta L. | |
dc.contributor.author | Reitsma, Geert | |
dc.contributor.author | Poullain, Sonia Marggi | |
dc.contributor.author | Fernández-Milán, Pedro | |
dc.contributor.author | González-Vázquez, Jesús | |
dc.contributor.author | de Nalda, Rebeca | |
dc.contributor.author | Martín, Fernando | |
dc.contributor.author | Vrakking, Marc J. J. | |
dc.contributor.author | Kornilov, Oleg | |
dc.contributor.author | Bañares, Luis | |
dc.date.accessioned | 2022-03-30T11:29:49Z | |
dc.date.available | 2022-03-30T11:29:49Z | |
dc.date.issued | 2021 | |
dc.description.abstract | The time-resolved photodynamics of the methyl iodide cation (CH3I+) are investigated by means of femtosecond XUV-IR pump-probe spectroscopy. A time-delay-compensated XUV monochromator is employed to isolate a specific harmonic, the 9th harmonic of the fundamental 800 nm (13.95 eV, 88.89 nm), which is used as a pump pulse to prepare the cation in several electronic states. A time-delayed IR probe pulse is used to probe the dissociative dynamics on the first excited state potential energy surface. Photoelectrons and photofragment ions - and I+ - are detected by velocity map imaging. The experimental results are complemented with high level ab initio calculations for the potential energy curves of the electronic states of CH3I+ as well as with full dimension on-the-fly trajectory calculations on the first electronically excited state, considering the presence of the IR pulse. The and I+ pump-probe transients reflect the role of the IR pulse in controlling the photodynamics of CH3I+ in the state, mainly through the coupling to the ground state and to the excited state manifold. Oscillatory features are observed and attributed to a vibrational wave packet prepared in the state. The IR probe pulse induces a coupling between electronic states leading to a slow depletion of fragments after the cation is transferred to the ground states and an enhancement of I+ fragments by absorption of IR photons yielding dissociative photoionization. © 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/8473 | |
dc.identifier.uri | https://doi.org/10.34657/7511 | |
dc.language.iso | eng | eng |
dc.publisher | [London] : IOP | eng |
dc.relation.doi | https://doi.org/10.1088/1367-2630/ac0c9b | |
dc.relation.essn | 1367-2630 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 530 | eng |
dc.subject.other | femtosecond dynamics | eng |
dc.subject.other | high harmonic generation | eng |
dc.subject.other | time delay compensated monochromator | eng |
dc.subject.other | XUV photoionization | eng |
dc.title | Femtosecond XUV–IR induced photodynamics in the methyl iodide cation | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | MBI | eng |
wgl.subject | Physik | eng |
wgl.type | Zeitschriftenartikel | eng |
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