Development of time-resolved electron momentum spectroscopy: a tool for visualizing the motion of electrons during a chemical reaction

28th International Conference on Photonic, Electronic and Atomic Collisions

Yamazaki, M.^1 ; Kasai, Y.^1 ; Oishi, K.^1 ; Nakazawa, H.^1 ; Takahashi, M.^1

IMRAM, Tohoku University, Sendai

980-8577, Japan^1

关键词: Electron momentum spectroscopy;    Incident electron beams;    Instrumental design;    Motion of electrons;    Photodissociation dynamics;    Repetition rate;    Technical details;    Ultra-short pulsed;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/5/052009/pdf
DOI  :  10.1088/1742-6596/488/5/052009

来源: IOP

【 摘 要 】

An electron momentum spectroscopy (EMS) apparatus has been developed, which employs an ultrashort-pulsed incident electron beam with a repetition rate of 5 kHz and a pulse duration in the order of picoseconds. Its instrumental design and technical details are reported, involving demonstration of a new method for finding time-zero. Furthermore, a preliminary time-resolved EMS study on the photodissociation dynamics of acetone at 195 nm is presented.