Development of time-resolved photoelectron imaging for studies on hydrated electron

用于研究水合电子的时间分辨光电子成像的发展

• 批准号: 14204063
• 负责人: SUZUKI Toshinori
• 金额: $ 36.44万
• 依托单位: RIKEN (2003-2004)Okazaki National Research Institutes (2002)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14204063/
• 关键词: photoelectron spectroscopy; femtosecond; ultrafast spectroscopy; imaging; droplet; solvated electron; hydrated electron; time-resolved charged particle imaging; フェムト秒; 光電子

The aim of this work was to develop an atomization technique of bulk liquids to form a nano-scale droplets, allowing detailed laser photoelectron spectroscopy on hydrated electron in the droplet. An atomization process using Rayleigh instability I continuous liquid flow was examined and a new way of efficient disintegration of liquid was investigated through development of new nozzles. Two major types of a crossed liquid-gas jets and coaxial expansion of liquid and gas were tested, in which good performance was confirmed for the coaxial type. Laser-assisted particle image velocimetry was employed to measure the velocities of droplets, and Mie light scattering to measure the size distribution in micrometer scale. In addition, the size distribution in nano-scale was examined using a differential mobility analyzer(DMA). The DMA indicated that nano-scale droplets are efficiently formed by using our nozzles. Furthermore, time-of-flight mass analysis characterized the droplet size distribution produced by atomization in high vacuum, and nano-scale droplets were observed to confirm the results of DMA.

这项工作的目的是开发一种散装液体的雾化技术来形成纳米级液滴，从而可以在液滴中的水合电子上进行详细的激光光电光谱。研究了使用雷利不稳定性I连续液体流动的雾化过程，并通过开发新的喷嘴研究了一种新的液体有效分解方式。测试了两种主要类型的交叉液态气流和同轴膨胀的液体和气体，其中证实了同轴类型的良好性能。使用激光辅助的粒子图像速度法来测量液滴的速度，MIE光散射以微米尺度测量尺寸分布。此外，使用差异迁移率分析仪（DMA）检查了纳米级中的尺寸分布。 DMA表明纳米级液滴是通过使用我们的喷嘴有效形成的。此外，飞行时间质量分析表征了高真空雾化产生的液滴尺寸分布，并且观察到纳米级液滴确认了DMA的结果。

项目成果

Femtosecond photoelectron imaging on pyridine : electronic dephasing from the S1(n,π^*) state and Rydberg state energetics

吡啶上的飞秒光电子成像：S1(n,π^*) 态的电子相移和里德堡态能量学

• 发表时间: 2004
• 期刊: Journal of Physical Chemistry A 107
• 作者: M.Tsubouchi;T.Suzuki
• 通讯作者: T.Suzuki

鈴木俊法: "化学反応の実時間追跡"日本物理学会誌. 58. 765-769 (2003)

Toshiharu Suzuki：“化学反应的实时跟踪”日本物理学会杂志 58. 765-769 (2003)。

Photodissociation of Nitorous Oxide revisited by high-resolution photofragment imaging : energy partitioning

通过高分辨率照片碎片成像重新审视一氧化二氮的光解：能量分配

• 发表时间: 2004
• 期刊: Journal of Physical Chemistry A 108
• 作者: T.Nishide