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题名: Chemical reaction dynamics of Rydberg atoms with neutral molecules: A comparison of molecular-beam and classical trajectory results for the H(n)+D-2 -> HD+D(n ') reaction
作者: Song, H;  Dai, DX;  Wu, GR;  Wang, CC;  Harich, SA;  Hayes, MY;  Wang, XY;  Gerlich, D;  Yang, XM;  Skodje, RT
刊名: JOURNAL OF CHEMICAL PHYSICS
发表日期: 2005-08-15
DOI: 10.1063/1.1998807
卷: 123, 期:7
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Physics
英文摘要: Recent molecular-beam experiments have probed the dynamics of the Rydberg-atom reaction, H(n)+D-2 -> HD+D(n) at low collision energies. It was discovered that the rotationally resolved product distribution was remarkably similar to a much more limited data set obtained at a single scattering angle for the ion-molecule reaction H++D-2 -> D++HD. The equivalence of these two problems would be consistent with the Fermi-independent-collider model (electron acting as a spectator) and would provide an important new avenue for the study of ion-molecule reactions. In this work, we employ a classical trajectory calculation on the ion-molecule reaction to facilitate a more extensive comparison between the two systems. The trajectory simulations tend to confirm the equivalence of the ion+molecule dynamics to that for the Rydberg-atom+molecule system. The theory reproduces the close relationship of the two experimental observations made previously. However, some differences between the Rydberg-atom experiments and the trajectory simulations are seen when comparisons are made to a broader data set. In particular, the angular distribution of the differential cross section exhibits more asymmetry in the experiment than in the theory. The potential breakdown of the classical model is discussed. The role of the "spectator" Rydberg electron is addressed and several crucial issues for future theoretical work are brought out. (c) 2005 American Institute of Physics.
关键词[WOS]: SEMIQUANTAL THEORY ;  ENERGY COLLISIONS ;  HIGH-N ;  SCATTERING ;  INTERMEDIATE ;  EXCHANGE ;  SYSTEM ;  STATES ;  TRANSITIONS ;  IONIZATION
语种: 英语
WOS记录号: WOS:000231449700025
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139674
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Univ Calif Berkeley, Dept Chem, Berkeley, CA 94620 USA
3.Univ Colorado, Dept Chem, Boulder, CO 80309 USA
4.Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany
5.Acad Sinica, Inst Atom & Mol Sci, Taipei, Taiwan

Recommended Citation:
Song, H,Dai, DX,Wu, GR,et al. Chemical reaction dynamics of Rydberg atoms with neutral molecules: A comparison of molecular-beam and classical trajectory results for the H(n)+D-2 -> HD+D(n ') reaction[J]. JOURNAL OF CHEMICAL PHYSICS,2005,123(7).
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