Charge disturbance/excitation in the Raman virtual state revealed by ROA signal: A case study of pinane  

作　　者：Ziqi Zhu Peijie Wang Guozhen Wu 祝子祺;王培杰;吴国祯(State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China;The Beijing Key Laboratory for Nano-Photonics and Nano-Structure,Department of Physics,Capital Normal University,Beijing 100048,China)

机构地区：[1]State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China [2]The Beijing Key Laboratory for Nano-Photonics and Nano-Structure,Department of Physics,Capital Normal University,Beijing 100048,China

出　　处：《Chinese Physics B》2021年第6期261-265,共5页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 21872097);Scientific Research Base Development Program of the Beijing Municipal Commission of Education。

摘　　要：The Raman mode intensities are used to extract the bond polarizabilities which are the indication of the charge disturbance/excitation of the Raman virtual state. A classical formula based on the electric and magnetic dipolar coupling among the charges on the atoms is developed which relates the charges and vibrational amplitudes of the atoms in a normal mode to the Raman optical activity(ROA) mode signatures. By fitting with the experimental ROA signatures, we are able to elucidate the scaling parameter which relates the bond polarizability to the electric charge. The result shows that around40% of the charges in pinane are involved in the Raman process under 532 nm laser excitation.

关 键 词：Raman intensity bond polarizabilities Raman optical activity HANDEDNESS pinane electric charge 

分 类 号：O657.37[理学—分析化学] O624.11[理学—化学]