Attosecond Resolved Electron Release in Two-Color Near-Threshold Photoionization of N 2

Abstract : We have simulated two-color photoionization of N 2 by solving the time-dependent Schrödinger equation with a simple model accounting for the correlated vibronic dynamics of the molecule and of the ion N þ 2. Our results, in very good agreement with recent experiments [Haessler et al., Phys. Rev. A 80, 011404 (2009)], show how a resonance embedded in the molecular continuum dramatically affects the phases of the two-photon transition amplitudes. In addition, we introduce a formal relation between these measurable phases and the photoelectron release time, opening the way to attosecond time-resolved measurements, equivalent to double-slit experiments in the time domain.
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Jérémie Caillat, Alfred Maquet, Stefan Haessler, Baptiste Fabre, Thierry Ruchon, et al.. Attosecond Resolved Electron Release in Two-Color Near-Threshold Photoionization of N 2. Physical Review Letters, American Physical Society, 2011, 106, pp.093002. ⟨10.1103/PhysRevLett.106.093002⟩. ⟨hal-01164772⟩

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