物理学报2025，Vol.74Issue(24)：52-63,12.DOI:10.7498/aps.74.20251130
液相磁瓶式光电子谱仪及其在超快动力学领域中的应用
Design and application of liquid-phase magnetic-bottle time resolved photoelectron spectroscopy
摘要
Abstract
The liquid phase serves as a critical environment for chemical and biological reactions.The chemical and biological reaction dynamics of molecules in liquids exhibit evolution behaviors that are significantly different from those of isolated molecules in the gas phase.The in-depth investigation of the ultrafast excited-state dynamics of liquid-phase molecules is of great importance for uncovering the microscopic mechanisms underlying complex chemical and biological processes.Photoelectron spectroscopy not only reveals the electronic structure of excited-state molecules but also exhibits high sensitivity to structural changes,making it a powerful tool for studying the relaxation dynamics.Liquid-phase time-resolved photoelectron spectroscopy utilizes a liquid microjet within a high vacuum.In this pump-probe technique,an initial pump pulse excites the liquids to initiate dynamics,followed by a delayed probe pulse that ionizes the evolving system.The time-dependent energy distribution of the resulting photoelectrons,which encodes the ultrafast dynamics,is measured by a magnetic-bottle time-of-flight(MB-TOF)analyzer.This review systematically summarizes recent advancements in the time-resolved liquid-phase photoelectron spectro-scopy technology for studying ultrafast dynamics in liquids,detailing the fundamental working principles of magnetic-bottle spectrometers and the preparation techniques for liquid microjet targets.Furthermore,typical applications are discussed,concluding with an analysis of current technical challenges and future research directions.关键词
液相体系/磁瓶式光电子谱仪/超快时间分辨/激发态电子动力学Key words
liquid-phase systems/magnetic-bottle photoelectron spectrometer/ultrafast time resolution/electronic excited-state dynamics引用本文复制引用
任百惠,于尧,闫鹏宇,王孟阳,孟胜,张鹏举..液相磁瓶式光电子谱仪及其在超快动力学领域中的应用[J].物理学报,2025,74(24):52-63,12.基金项目
国家自然科学基金(批准号:12474261,12450401)资助的课题. Project supported by the National Natural Science Foundation of China(Grant Nos.12474261,12450401). （批准号:12474261,12450401）
