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High Resolution Crossed Beams Scattering Study of the F+HD→DF+H Reaction
Xing-anWang,Li Che,Ze-feng Ren,Ming-hui Qiu,Dong-xu Dai,Xiu-yan Wang,Xue-ming Yang*
Author NameAffiliationE-mail
Xing-anWang State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Li Che State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Ze-feng Ren State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Ming-hui Qiu State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Dong-xu Dai State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Xiu-yan Wang State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China  
Xue-ming Yang* State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China xmyang@dicp.ac.cn 
Abstract:
Crossed beams scattering study was carried out on the F+HD→DF+H reaction using highresolution H-atom Rydberg tagging time-of-flight technique. Vibrational state-resolved differential cross sections were measured, with partial rotational state resolution, at eight collision energies in the range of 2.51?5.60 kJ/mol. Experimental results indicated that the product angular distributions are predominantly backward scattered. As the collision energy increases, the backward scattered peak becomes broader gradually. Dependence of product vibration branching ratios on the collision energy was also determined. The experimental results show that the DF products are highly inverted in the vibrational state distribution and the DF (v′=3) product is the most populated state. Furthermore, the DF (v′=1) product has also been observed at collision energy above 3.97 kJ/mol.
Key words:  F+HD→DF+H, Crossed beam, Rydberg tagging, Backward scattering
FundProject:
High Resolution Crossed Beams Scattering Study of the F+HD→DF+H Reaction
王兴安,车丽,任泽峰,邱明辉,戴东旭,王秀岩,杨学明*
摘要:
采用高分辨的氢原子里德堡态标识的飞行时间谱技术,对F+HD→DF+H反应进行了交叉分子束研究. 在2.51~5.60 kJ/mol的8个碰撞能下,测得了部分转动态分辨的微分截面. 实验结果显示,反应产物角分布表现出显著的后向散射,随着碰撞能的提高,角分布会逐渐变宽. 确定了产物振动态分支比随碰撞能变化的关系. 结果显示产物DF表现出高度振动态反转布居,其中DF(v′=3)态是布居数最高的产物态,在3.97 kJ/mol以上还探测到产物DF(v′=1)的信号.
关键词:  F+HD→DF+H,交叉分子束,里德堡态标识,后向散射
DOI:10.1088/1674-0068/22/06/551-555
分类号: