论文标题
气相碰撞过程的动力学和分支比研究的新仪器在非常低的温度下
A new instrument for kinetics and branching ratio studies of gas phase collisional processes at very low temperatures
论文作者
论文摘要
提出了一种专门研究低温气相中性反应（包括聚类过程）的新仪器。它结合了超音速反应器与真空超紫罗兰（VUV）同步光谱质谱法的光电离子时间。已经采用了光电 - 光电偶联检测方案来优化粒子计数效率。该仪器的特征及其功能以及在低温（<100 k）中获得的一些结果所示，包括n丁烷的{光电离谱}，甲酸二聚体形成的检测以及观察到二乙烯分子的观察到C $ _2 $ _2 $ _2 $ _2 $ _2 $ __ radical and c $ _____2 $ ___2 $ ___2 $ ___2 $ __2 $ h.
A new instrument dedicated to the kinetic study of low-temperature gas phase neutral-neutral reactions, including clustering processes, is presented. It combines a supersonic flow reactor with Vacuum Ultra-Violet (VUV) synchrotron photoionization time of flight mass spectrometry. A photoion-photoelectron coincidence detection scheme has been adopted to optimize the particle counting efficiency. The characteristics of the instrument are detailed along with its capabilities illustrated through a few results obtained at low temperatures (< 100 K) including a {photoionization spectrum} of n-butane, the detection of formic acid dimer formation as well as the observation of diacetylene molecules formed by the reaction between the C$_2$H radical and C$_2$H$_2$.
