Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Xueming Yang"'
Publikováno v:
Chinese Journal of Chemical Physics. 34:381-385
A slow and clean fluorine atom beam source is one of the essential components for the low-collision energy scattering experiment involving fluorine atom. In this work, we describe a simple but effective photolysis fluorine atom beam source based on u
Autor:
Xueming Yang, Wentao Chen, Xingan Wang, Yuxin Tan, Shengrui Yu, Zhigang Sun, Si-wen Wang, Hailin Zhao, Yin Huang, Chang Luo, Daofu Yuan
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
It has long been known that there is a conical intersection (CI) between the ground and first excited electronic state in the H3 system. Its associated geometric phase (GP) effect has been theoretically predicted to exist below the CI since a long ti
Autor:
Hailin Zhao, Yufeng Wang, Tao Wang, Xueming Yang, Zhigang Sun, Dong H. Zhang, Yurun Xie, Yin Huang, Xin Xu, Chunlei Xiao
Publikováno v:
Science. 368:767-771
Intriguing interference mechanism Quantum interference (QI) effects play a fundamental role in the dynamics of chemical reactions. Xie et al. detected unusual QI oscillations in the differential cross section measured in the recoil scattering directi
Autor:
Zhen Chen, Shu Liu, Dongxu Dai, Rongjun Chen, Guorong Wu, Xingan Wang, Xueming Yang, Dong H. Zhang, Jun Chen, Ting Xie
Publikováno v:
Proceedings of the National Academy of Sciences. 117:9202-9207
It has long been predicted that oscillatory behavior exists in reactivity as a function of collision energy for heavy-light-heavy (HLH) chemical reactions in which a light atom is transferred between two heavy atoms or groups of atoms, but direct obs
Publikováno v:
Chinese Journal of Chemical Physics. 33:135-138
The reaction of chlorine atom Cl(2P) (Cl(2P3/2) and Cl∗(2P1/2)) with D2 was investigated at collision energy from 4.5 kcal/mol to 6.5 kcal/mol with a high-resolution crossed molecular beam apparatus using the technique of D-atom Rydberg tagging det
Publikováno v:
Chinese Journal of Chemical Physics. 32:72-76
The reaction dynamics of the fluorine atom with vibrationally excited D2(v=1, j=0) was investigated using the crossed beam method. The scheme of stimulated Raman pumping was employed for preparation of vibrationally excited D2 molecules. Contribution
Publikováno v:
The Review of scientific instruments. 91(7)
We report a new crossed molecular beam apparatus with the H atom Rydberg tagging detection technique. The multi-channel detection scheme with 15 microchannel plate (MCP) detectors enables simultaneously accumulating time-of-flight spectra over a wide
Autor:
Zhigang Sun, Tiangang Yang, Daniel M. Neumark, Marissa L. Weichman, Donghui Zhang, Tao Wang, Chunlei Xiao, Xueming Yang
Publikováno v:
Chemical Society Reviews. 47:6744-6763
The transition state is a key concept in the field of chemistry and is important in the study of chemical kinetics and reaction dynamics. Chemical reactions in the gas phase are essentially molecular scattering processes, which are quantum mechanical
Autor:
Weiqing Zhang, Yuxin Tan, Shengrui Yu, Chang Luo, Yue Miao, Xueming Yang, Daofu Yuan, Si-wen Wang, Wentao Chen, Ting Xie, Xingan Wang, Guorong Wu, Jiayue Yang
Publikováno v:
Chinese Journal of Chemical Physics. 30:609-613
We study the H+CH4/CD4→H2/HD+CH3/CD3 reactions using the time sliced velocity map ion imaging technique. Ion images of the CH3/CD3 products were measured by the (2+1) resonance enhanced multi-photon ionization (REMPI) detection method. Besides the
Autor:
Zhigang Sun, Jun Chen, Dong H. Zhang, François Lique, Long Huang, Millard H. Alexander, Daniel M. Neumark, Tao Wang, Tiangang Yang, Dongxu Dai, Chunlei Xiao, Xueming Yang
Publikováno v:
Nature Chemistry
Nature Chemistry, Nature Publishing Group, 2019, 11 (8), pp.744-749. ⟨10.1038/s41557-019-0280-3⟩
Nature Chemistry, Nature Publishing Group, 2019, 11 (8), pp.744-749. ⟨10.1038/s41557-019-0280-3⟩
Chemical reactions are important in the evolution of low-temperature interstellar clouds, where the quantum tunnelling effect becomes significant. The F + para-H2 → HF + H reaction, which has a significant barrier of 1.8 kcal mol−1, is an importa