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Femtosecond pulse radiolysis study on geminate ion recombination in n-dodecane

机译:飞秒脉冲辐射分解研究正十二烷中的组氨酸离子重组

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The primary process of radiation chemistry was studied by the femtosecond pulse radiolysis in n-dodecane. The time-dependent behavior of geminate ion recombination in n-dodecane was investigated in neat n-dodecane and the solutions containing electron and cation scavengers. The excited radical cation was found from analyzing the geminate process by the theoretical simulation based on the diffusion theory. The life time of the excited radical cation was 7 ps in n-dodecane. The reaction rate constant of the excited radical cation with the triethylamine (TEA) was 3.3 x 10~(11) dm~3 mol~(-1) s~(-1) which is one order higher than the normal diffusion rate constant. Although 74% of the excited radical cations are relaxed to the radical cation, the residual 26% are geminately recombined with electrons.
机译:通过飞秒脉冲在正十二烷中的辐射分解研究了辐射化学的主要过程。在纯正十二烷和含电子和阳离子清除剂的溶液中,研究了正十二烷中锗离子重组的时间依赖性行为。通过基于扩散理论的理论模拟分析发芽过程,发现了激发的自由基阳离子。在正十二烷中,被激发的自由基阳离子的寿命为7 ps。激发的自由基阳离子与三乙胺(TEA)的反应速率常数为3.3 x 10〜(11)dm〜3 mol〜(-1)s〜(-1),比正常的扩散速率常数高一级。尽管有74%的受激自由基阳离子松弛成该自由基阳离子,但剩余的26%则与电子重新结合。

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