Experimental and theoretical progress in time-resolved (e, 2e) electron momentum spectroscopy of photodissociation dynamics of acetone at 195 nm

30th International Conference on Photonic, Electronic, and Atomic Collisions

Nakayama, Shotaro^1 ; Yamazaki, Masakazu^1 ; Takahashi, Masahiko^1

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

980-8577, Japan^1

关键词: Deuterated acetone;    Electron momentum spectroscopy;    Minimum energy;    Minimum energy paths;    Photodissociation dynamics;    Pump laser;    Reaction paths;    Time-resolved;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/7/062051/pdf
DOI  :  10.1088/1742-6596/875/7/062051

来源: IOP

【 摘 要 】

Synopsis We report on experimental and theoretical progress in time-resolved (e, 2e) electron momentum spectroscopy of photodissociation dynamics of the deuterated acetone molecule at 195 nm. Experimentally, we are conducting a series of measurements to have improved experimental results, compared to the earlier ones, by using a pump laser with higher intensity. Theoretically, we have examined the predicted minimum energy reaction path to investigate whether associated (e, 2e) calculations meet the experimental results. A noticeable difference between the experiment and the calculations has been found at around binding energy of 10 eV, suggesting that the observed difference may originate, at least partly, in ever-unconsidered non-minimum energy paths.