Direct observation of forward-scattering oscillations in the H+HD -> H-2+D reaction

Yuan, Daofu1; Yu, Shengrui2; Chen, Wentao1; Sang, Jiwei1; Luo, Chang1; Wang, Tao1,3; Xu, Xin3; Casavecchia, Piergiorgio4; Wang, Xingan1; Sun, Zhigang3; Zhang, Dong H.3; Yang, Xueming1,3,5

2018-06

10.1038/s41557-018-0032-9

Nature Chemistry   影响因子和分区

1755-4330

1755-4349

Accurate measurements of product state-resolved angular distributions are central to fundamental studies of chemical reaction dynamics. Yet, fine quantum-mechanical structures in product angular distributions of a reactive scattering process, such as the fast oscillations in the forward-scattering direction, have never been observed experimentally and the nature of these oscillations has not been fully explored. Here we report the crossed-molecular-beam experimental observation of these fast forward-scattering oscillations in the product angular distribution of the benchmark chemical reaction, H + HD -> H-2 + D. Clear oscillatory structures are observed for the H-2(v' = 0, j' = 1, 3) product states at a collision energy of 1.35 eV, in excellent agreement with the quantum-mechanical dynamics calculations. Our analysis reveals that the oscillatory forward-scattering components are mainly contributed by the total angular momentum J around 28. The partial waves and impact parameters responsible for the forward scatterings are also determined from these observed oscillations, providing crucial dynamics information on the transient reaction process.

SCI

英语

NI论文

通讯

Strategic Priority Research Program of Chinese Academy of Sciences[XDB17000000]

Chemistry

Chemistry, Multidisciplinary

WOS:000432991800013

NATURE PUBLISHING GROUP

Web of Science

1.Univ Sci & Technol China, IChEM Collaborat Innovat Ctr Chem Energy Mat, Dept Chem Phys, Hefei Natl Lab Phys Sci Microscale, Hefei, Anhui, Peoples R China
2.Zhejiang Normal Univ, Hangzhou Inst Adv Studies, Hangzhou, Zhejiang, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian, Peoples R China
4.Univ Perugia, Dipartimento Chim Biol & Biotecnol, Perugia, Italy
5.Southern Univ Sci & Technol, Dept Chem, Shenzhen, Peoples R China

Yuan, Daofu,Yu, Shengrui,Chen, Wentao,et al. Direct observation of forward-scattering oscillations in the H+HD -> H-2+D reaction[J]. Nature Chemistry,2018,10(6):653-658.

Yuan, Daofu.,Yu, Shengrui.,Chen, Wentao.,Sang, Jiwei.,Luo, Chang.,...&Yang, Xueming.(2018).Direct observation of forward-scattering oscillations in the H+HD -> H-2+D reaction.Nature Chemistry,10(6),653-658.

Yuan, Daofu,et al."Direct observation of forward-scattering oscillations in the H+HD -> H-2+D reaction".Nature Chemistry 10.6(2018):653-658.