Open AccessVibration Effect on the Extracted Molecular Structure from Laser-Induced Electron Diffraction
Author(s) -
Thị Hiền Nguyễn,
Ngoc Thi
Publication year - 2020
Publication title -
kalpa publications in engineering
Language(s) - English
Resource type - Conference proceedings
ISSN - 2515-1770
DOI - 10.29007/xj9p
Subject(s) - diatomic molecule , diffraction , oscillation (cell signaling) , laser , electron diffraction , femtosecond , scattering , physics , interference (communication) , molecular vibration , electron , vibration , component (thermodynamics) , computational physics , optics , molecule , chemistry , computer science , acoustics , quantum mechanics , channel (broadcasting) , computer network , biochemistry
It is well-known that the laser-induced electron diffraction (LIED) contains molecular structural information that can be extracted with a spatial resolution of angström and time resolution of a few femtoseconds [1, 2]. The retrieval is based on the quantitative rescattering method (QRS) allowing the LIED signal to be split into two components [3], one of which is a laser-free differential cross-section (DCS) containing molecular structure. The method based on fitting the experimental DCS extracted from the LIED spectra to the theoretical DCS calculated with assumed initial structure parameters then allows one to reveal the real molecular structures. The theoretical DCS of molecules is treated within the independent atoms model (IAM) [1, 4] or the more advanced model based on the multiple scattering theory (MS) [2, 5]. In this report, we talk about how to consider the molecular vibration effect to the MS model and examine this effect of molecular vibrations on the DCS by comparing the oscillation component with the component of the MS second-order describing the interference of the scattering waves. We perform an application of the developed theory for some diatomic molecules.