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FM: Fall Meeting
FM 41: Poster: Quantum Sensing
FM 41.21: Poster
Dienstag, 24. September 2019, 16:30–18:30, Tents
State-resolved photoionization time delays in CF4 using two-color coincidence laser spectroscopy — •s. h. Ahmadi1,2, m. moioli1, e. plesiat3, a. palaciosp3, m. reduzzi2, a. Stenftlebens4, f. frassetto5, l. poletto5, f. bragheri6, r. osellame6, p. decleva7, c. d. schröter8, r. moshammer8, t. pfeifer8, f. martin3, and g. sansone1 — 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany — 2Dipartimento di Fisica, Politecnico, Milano, Italy — 3Departamento de Qumica, Universidad Autónoma de Madrid, Madrid, Spain — 4Institute of Physics and CINSaT, University of Kassel, Kassel, Germany — 5Istituto di Fotonica e Nanotecnologie, CNR, Padova, Italy — 6Istituto di Fotonica e Nanotecnologie, CNR, Milano, Italy — 7Dipartimento di Scienze Chimiche e Farmaceutiche, Universitá di Trieste, Trieste, Italy — 8Max-Planck-Institut für Kernphysik, Heidelberg, Germany
Photoionization time delays between photoelectrons leaving CF4+ in its X 2T1 and C 2T2 states are experimentally measured and simulated using pump(XUV)-probe(IR) coincidence laser spectroscopy in the photon-energy range of 20-46 eV. We acquired the photoelectron spectra as a function of the relative delay between the XUV and IR pulse. Simulations are performed by numerically solving TDSE using density functional theory. The results suggest complex photoionization dynamics on an attosecond time scale between photoelectrons leaving these two electronic states. The molecular-frame angular dependence of the photoelectrons can also be accessed and will be discussed.