Development of time-resolved (e, 2e) 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

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai

980-8577, Japan^1

关键词: Electron momentum spectroscopy;    Incident electron beams;    Instrumental design;    Motion of electrons;    Potential ability;    Pulsed electron beams;    Signal intensities;    Ultra-short pulsed;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/1/012056/pdf
DOI  :  10.1088/1742-6596/488/1/012056

来源: IOP

【 摘 要 】

We report the instrumental design and technical details of an (e, 2e) electron momentum spectroscopy (EMS) apparatus, which employs an ultrashort-pulsed incident electron beam with a repetition rate of 5 kHz and a pulse duration in the order of one picosecond. EMS data for the neutral Ar atom in the ground state measured by using the pulsed electron beam are presented to illustrate the potential abilities of the apparatus for ultrafast molecular dynamics. The results are discussed mainly in terms of signal intensity.