一种用于量子态分辨吸附研究的分子束-表面装置。

A molecular beam-surface apparatus for quantum state-resolved adsorption studies.

作者信息

Shen Qiqi, Wu Jiawei, Zhou Feiyue, Song Yunlong, Dong Wenrui, Wang Xingan, Wang Tao, Yang Xueming

机构信息

State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China.

Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.

出版信息

Rev Sci Instrum. 2022 Jan 1;93(1):013201. doi: 10.1063/5.0049178.

DOI:10.1063/5.0049178

PMID:35104941

Abstract

Understanding the microscopic mechanism of molecule-surface interaction is of great importance in the study of chemical dynamics. Yet, it remains challenging to experimentally acquire quantum state resolved results, particularly the results related to different degrees of freedom of the reactants. Here, we report the design and performance of a new apparatus for molecule-surface dynamics studies, which enable the measurement of quantum state-resolved adsorption. A continuous narrow-linewidth infrared laser source and molecular beam unit were developed and employed in this new apparatus to achieve independent control on different degrees of freedom (translation, vibration, and rotation) of the molecule. Preliminary results on hydrogen and hydrogen chloride adsorption on the Cu (111) surface were also presented.

摘要

理解分子与表面相互作用的微观机制在化学动力学研究中具有重要意义。然而，通过实验获得量子态分辨结果，尤其是与反应物不同自由度相关的结果，仍然具有挑战性。在此，我们报告了一种用于分子-表面动力学研究的新装置的设计和性能，该装置能够测量量子态分辨的吸附。在这种新装置中，开发并采用了连续窄线宽红外激光源和分子束单元，以实现对分子不同自由度（平动、振动和转动）的独立控制。还展示了氢气和氯化氢在铜（111）表面吸附的初步结果。