EMS study of vibrational effects on electron momentum distributions of C2H4 and CH2F2

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

Watanabe, Noboru^1 ; Yamazaki, Masakazu^1 ; Takahashi, Masahiko^1

IMRAM, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai

980-8577, Japan^1

关键词: C-H bond;    Electron momentum distribution;    Electron momentum spectroscopy;    Impact energy;    Non-coplanar;    Theoretical methods;    Valence orbitals;    Vibrational effects;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/7/072031/pdf
DOI  :  10.1088/1742-6596/635/7/072031

来源: IOP

【 摘 要 】

We report an electron momentum spectroscopy study of vibrational effects on the electron momentum distributions for the outer valence orbitals of C2H4and CH2F2. The symmetric noncoplanar (e,2e) experiment has been conducted at impact energy of 1.2 keV. Furthermore, a theoretical method of calculating electron momentum distributions has been developed with vibrational effects being involved. The experimental and theoretical results for these molecules strongly suggest that vibrational effects on electron momentum distributions tend to be appreciable for non-total symmetry molecular orbitals delocalized over some equivalent CH-bond sites.