Photoprocessing of large PAH cations.

Proceedings of the International Astronomical Union. International Astronomical Union Pub Date : 2019-04-01 Epub Date: 2020-10-12 DOI:10.1017/S1743921319007063
Gabi Wenzel, Sarah Rodriguez Castillo, Giacomo Mulas, Ming-Chao Ji, Anthony Bonnamy, Hassan Sabbah, Alexandre Giuliani, Laurent Nahon, Christine Joblin
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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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大的多环芳烃阳离子的光处理。
在宇宙环境中，多环芳烃(PAHs)与年轻恒星发射的真空紫外线(VUV)光子强烈相互作用。捕获的多环芳烃阳离子大小从30到48个碳原子被可调谐同步加速器光照射(在SOLEIL的DESIRS光束线)。测定了它们的电离和解离截面，并与TD-DFT计算的光吸收截面进行了比较。报告了辐射冷却的证据。
本文章由计算机程序翻译，如有差异，请以英文原文为准。
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Proceedings of the International Astronomical Union. International Astronomical Union
Proceedings of the International Astronomical Union. International Astronomical Union
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