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光讲 Zhi-Heng Loh 报告视频回顾 |
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报告摘要
The ionization of liquid water serves as the principal trigger for a myriad of phenomena that are relevant to radiation chemistry and radiation biology. The earliest events that follow the ionization of water, however, remain relatively unknown. In this talk, I will introduce some of the recent results from my group on the investigation of ionized liquid water using ultrafast spectroscopy. These experiments employ femtosecond pulses spanning the short-wave infrared (~2 mm) to the soft X-ray (~2 nm), and reveal the ultrafast dynamics of hydrated electron precursors and the elusive H2O·+ radical cation. These studies of ionized liquid water have also been extended to biomolecules in aqueous solution,revealing ultrafast structural rearrangement dynamics induced by electron ejection from these molecules. Our results shed light on the elementary ultrafast dynamics that accompany the interaction of ionizing radiation with molecules of biological relevance.
报告回看
第三讲：超快辐射化学:液态水和生物分子体系离化的电子-核超快动力学
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