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Journal Articles EPJ Web of Conferences Year : 2019

PAH under XUV excitation: an ultrafast XUV- photochemistry experiment for astrophysics

Abstract

Understanding processes induced by XUV excitation of Polycyclic Aromatic Hydrocarbons (PAHs) is at the heart of molecular astrophysics, which aims at understanding molecular evolution in interstellar media. We used ultrashort XUV pulses to produce highly excited PAHs cations. The photo-induced dynamics is probed using a pump-probe XUV-IR spectroscopy. By studying PAH from small (naphthalene) to large (hexabenzocoronene) PAHs, we show that the dynamic is governed by the large density of states, in which many-body quantum effects are dominant.
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Dates and versions

hal-02289841 , version 1 (17-09-2019)

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M. Hervé, P Castellanos, G Karras, V. Despré, A. Marciniak, et al.. PAH under XUV excitation: an ultrafast XUV- photochemistry experiment for astrophysics. EPJ Web of Conferences, 2019, XXI International Conference on Ultrafast Phenomena 2018 (UP 2018), 205, pp.06012. ⟨10.1051/epjconf/201920506012⟩. ⟨hal-02289841⟩
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