An attempt at a product vibrational analysis of a photo-induced chemical reaction by means of time-resolved (e, 2e) electron momentum spectroscopy

29th International Conference on Photonic, Electronic, and Atomic Collisions

Yamazaki, M.^1 ; Nakazawa, H.^1 ; Zhu, C.Y.^2 ; Takahashi, M.^1

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

980-8577, Japan^1

Department of Applied Chemistry, Institute of Molecular Science, National Chiao- Tung University, Hsinchu

30050, Taiwan^2

关键词: Binding energy spectra;    Deuterated acetone;    Electron momentum densities;    Electron momentum spectroscopy;    Photodissociation dynamics;    Theoretical calculations;    Vibrational analysis;    Vibrational state distributions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/1/012010/pdf
DOI  :  10.1088/1742-6596/635/1/012010

来源: IOP

【 摘 要 】

We report on a new attempt at an analysis of the vibrational state distributions in the products of a photo-induced chemical reaction. The experiment was performed by using time- resolved electron momentum spectroscopy (TR-EMS) for the products produced by the three- body photodissociation dynamics of the deuterated acetone molecule at 195 nm. It has been found from a comparison between the experiment and associated theoretical calculations that future TR-EMS measurements with improved statistics could be useful for the vibrational analysis of reaction products, in cases when effects of molecular vibration on their electron momentum densities are large enough so as to be noticeable in the binding energy spectra.