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题名: Universal Diffraction of Atomic and Molecular Matter-Waves: A Comparison of He and D-2 Quantum Reflected from a Grating
作者: Zhang, Weiqing1, 4;  Lee, Ju Hyeon2;  Kim, Hye Ah2;  Jin, Byung Gwun2;  Kim, Bong Jun2;  Kim, Lee Yeong3;  Zhao, Bum Suk2, 3;  Schoellkopf, Wieland1
关键词: atom optics ;  atom-surface interaction ;  emerging beam resonance ;  matter-wave diffraction ;  quantum reflection
刊名: CHEMPHYSCHEM
发表日期: 2016-11-01
DOI: 10.1002/cphc.201600965
卷: 17, 期:22, 页:3670-3676
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
英文摘要: Molecular beams of He and D-2 are scattered from a ruled diffraction grating in conical-mount geometry under grazing-incidence conditions. Fully resolved diffraction patterns as a function of detection angle are recorded for different grating azimuth angles and for two different kinetic energies of the particle beams. Variations in diffraction peak widths are traced back to different velocity spreads of He and D-2 determined by time-of-flight measurements. A comprehensive analysis of diffraction intensities confirms universal diffraction, that is, for identical deBroglie wavelengths, the relative diffraction intensities for He and D-2 are the same. Universal diffraction results from peculiarities of quantum reflection of the atoms and molecules from the diffraction grating. In quantum reflection particles scatter many nanometers in front of the surface from the long-range attractive branch of the particle-surface interaction potential without probing the potential well and the short-range repulsive branch of the potential.
关键词[WOS]: SURFACE
语种: 英语
WOS记录号: WOS:000388625000011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150349
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.Max Planck Gesell, Fritz Haber Inst, Faradayweg 4-6, D-14195 Berlin, Germany
2.Ulsan Natl Inst Sci & Technol, Dept Chem, Ulsan 44919, South Korea
3.Ulsan Natl Inst Sci & Technol, Dept Phys, Ulsan 44919, South Korea
4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, Weiqing,Lee, Ju Hyeon,Kim, Hye Ah,et al. Universal Diffraction of Atomic and Molecular Matter-Waves: A Comparison of He and D-2 Quantum Reflected from a Grating[J]. CHEMPHYSCHEM,2016,17(22):3670-3676.
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