Imaging attosecond and few-fs electron dynamics in molecules
Fernando Martín
IMDEA Nanoscience and Universidad Autónoma de Madrid, Spain
[email protected]
In most attosecond two-color XUV-pump/XUV-probe or XUV-pump/IR-probe experiments performed to date, the broadband pump pulse suddenly ionizes a molecule and creates an electronic wave packet that subsequently evolves under the influence of the nuclear motion until it is finally probed by the second pulse. To access the early electron dynamics induced by the pump pulse, the experiments usually record fragmentation yields as a function of the pump-probe delay with attosecond resolution. However, in spite of the successful observation of sub- and few-fs dynamics in the recorded fragmentation yields [1-4], it is not yet clear how the early electron dynamics leaves its signature in molecular fragments that are created long after those initial steps. In this talk I will describe recent efforts to account for the different steps leading to the final observables.
[1] F. Calegari et al, Science 346, 336 (2014).
[2] M. Nisoli, P. Decleva, F. Callegari, A. Palacios, and F. Martín, Chem. Rev. 117, 10760 (2017).
[3] M. Lara-Astiaso et al, J. Phys. Chem. Lett. 9, 4570 (2018).
[4] J. Delgado et al, Faraday Discussions, DOI: 10.1039/D0FD00121J.
IMDEA Nanoscience and Universidad Autónoma de Madrid, Spain
[email protected]
In most attosecond two-color XUV-pump/XUV-probe or XUV-pump/IR-probe experiments performed to date, the broadband pump pulse suddenly ionizes a molecule and creates an electronic wave packet that subsequently evolves under the influence of the nuclear motion until it is finally probed by the second pulse. To access the early electron dynamics induced by the pump pulse, the experiments usually record fragmentation yields as a function of the pump-probe delay with attosecond resolution. However, in spite of the successful observation of sub- and few-fs dynamics in the recorded fragmentation yields [1-4], it is not yet clear how the early electron dynamics leaves its signature in molecular fragments that are created long after those initial steps. In this talk I will describe recent efforts to account for the different steps leading to the final observables.
[1] F. Calegari et al, Science 346, 336 (2014).
[2] M. Nisoli, P. Decleva, F. Callegari, A. Palacios, and F. Martín, Chem. Rev. 117, 10760 (2017).
[3] M. Lara-Astiaso et al, J. Phys. Chem. Lett. 9, 4570 (2018).
[4] J. Delgado et al, Faraday Discussions, DOI: 10.1039/D0FD00121J.
