引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1864次   下载 1369 本文二维码信息
码上扫一扫!
分享到: 微信 更多
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*
State key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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1, 车丽1, 任泽峰1, 邱明辉1,2, 戴东旭1, 王秀岩1, 杨学明*1
1.中国科学院大连化学物理研究所分子反应动力学国家重点实验室,大连116023;2.大连交通大学物理系,大连116028
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: