Exploring availability of plasma-induced solvated electrons: formation and transport

探索等离子体诱导溶剂化电子的可用性：形成和传输

基本信息

批准号：
22K14174
负责人：
劉思維
金额：
$ 2.58万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Early-Career Scientists
财政年份：
2022
资助国家：
日本
起止时间：
2022-04-01 至 2025-03-31
项目状态：
未结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22K14174/
关键词：
solvated electrons plasma flow time-resolved solvated electron plasma formation transport

项目摘要

This project innovatively proposes the plasma flow in the liquid as a potential high-effective source for solvated electrons. In order to elucidate the coupling mechanism between solvated electrons and plasma flow, it is a severe challenge to directly observe solvated electrons due to the super activity and short lifetime of solvated electrons. In FY 2022, dechlorination was selected as an indicator of solvated electrons in the experiment. The results confirm the generation of chloride ions which remained in the target solution with a useable mass concentration that eventually increases exponentially when the treatment time increase. These results validate the potential for monitoring the distribution of solvated in the solution by specific indicators. In the next step, the flow behavior caused by the concertation difference would be studied and discussed.By combining a streak camera and a spectrometer, it is possible to resolve the spectral characteristics of plasma flow into continuous time sequences. The time-resolved spectra at the gas-liquid interface were successfully achieved with a temporal resolution of less than 1 microsecond and a wavelength resolution of 5.3 nm. Two main bands of light emission can be recognized, which correspond to the instants of the voltage application and reverse. The contents of wavelengths for the two bands show no difference, however, the total intensity, as well as the width, changes significantly. The results highlight the origin of the solvated electrons from plasma flow rather than the accumulation of charge in the liquid.

该项目创新地提出了液体中的血浆流，作为溶剂化电子的潜在高效源。为了阐明溶剂化电子和血浆流之间的耦合机制，由于超级活性和溶剂化电子的短寿命，直接观察溶剂化的电子是一个严重的挑战。在2022财年，在实验中选择了脱氯作为溶剂化电子的指标。结果证实了氯离子的产生，这些氯离子的产生留在目标溶液中，可用的质量浓度最终在治疗时间增加时呈指数增加。这些结果证明了通过特定指标监测溶液中溶剂化的分布的潜力。在下一步中，将研究和讨论由协会差异引起的流动行为。通过结合条纹摄像头和光谱仪，可以将等离子体流动的光谱特性解析为连续的时间序列。气液界面处的时间分辨光谱通过时间分辨率小于1微秒，波长分辨率为5.3 nm，成功实现了。可以识别两个光发射的主要带，这与电压应用的瞬间相对应。但是，这两个频段的波长的内容没有差异，但是，总强度以及宽度也发生了显着变化。结果突出了血浆流的溶剂化电子的来源，而不是液体中电荷的积累。