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Photoprocessing of large PAH cations

Abstract : In cosmic environments, polycyclic aromatic hydrocarbons (PAHs) strongly interact with vacuum ultraviolet (VUV) photons emitted by young stars. Trapped PAH cations ranging in size from 30 to 48 carbon atoms were irradiated by tunable synchrotron light (DESIRS beamline at SOLEIL). Their ionization and dissociation cross sections were determined and compared with TD-DFT computed photoabsorption cross sections. Evidence for radiative cooling is reported.
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Submitted on : Tuesday, December 29, 2020 - 5:21:08 PM
Last modification on : Monday, July 4, 2022 - 10:00:29 AM
Long-term archiving on: : Tuesday, March 30, 2021 - 7:59:02 PM


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Gabi Wenzel, Sarah Rodriguez Castillo, Giacomo Mulas, Ming-Chao Ji, Anthony Bonnamy, et al.. Photoprocessing of large PAH cations. Proceedings of the International Astronomical Union, Cambridge University Press (CUP), 2019, 15 (S350), pp.388-389. ⟨10.1017/S1743921319007063⟩. ⟨hal-03090504⟩



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