Tunable VUV photochemistry using vacuum ultraviolet free electron laser combined with H-atom Rydberg tagging time-of-flight spectroscopy
Tunable VUV photochemistry using vacuum ultraviolet free electron laser combined with H-atom Rydberg tagging time-of-flight spectroscopy
复制标题
使用真空紫外自由电子激光器与氢原子里德伯标记飞行时间光谱相结合的可调谐 VUV 光化学
DOI：
10.1063/1.5017757
复制
发表时间：
2018-06-01
影响因子：
1.6
通讯作者：
Yang, Xueming
中科院分区：
文献类型：
--
作者：
Chang, Yao;Yu, Shengrui;Yang, Xueming
在本文中，我们描述了一种使用氢原子里德堡标记飞行时间技术研究可调真空紫外光化学的实验装置。在该装置中，使用两个真空紫外激光束：一束通过在Kr气室中使用非线性四波混频方案产生并固定在121.6nm波长以探测通过莱曼α跃迁的H原子产物，另一束由种子自由电子激光设备产生，可在50-150 nm波长范围内连续调谐，以极高的亮度光离解分子。本文报道了4d（000）Rydberg态H_2O光解离的初步结果。这些结果表明，该实验装置是一个强有力的工具，用于研究在真空紫外区的光解动力学的分子涉及H原子消除过程。出版社：AIP Publishing
In this article, we describe an experimental setup for studying tunable vacuum ultraviolet photochemistry using the H-atom Rydberg tagging time-of-flight technique. In this apparatus, two vacuum ultraviolet laser beams were used: one is generated by using a nonlinear four-wave mixing scheme in a Kr gas cell and fixed at 121.6 nm wavelength to probe the H-atom product through the Lyman a transition and the other beam, produced by a seeded free electron laser facility, can be continuously tunable for photodissociating molecules in the wavelength range of 50-150 nm with extremely high brightness. Preliminary results on the H2O photodissociation in the 4d (000) Rydberg state are reported here. These results suggest that the experimental setup is a powerful tool for investigating photodissociation dynamics in the vacuum ultraviolet region for molecules involving H-atom elimination processes. Published by AIP Publishing.