Deceleration and cold collisions for neutral molecules and Rydberg atoms

中性分子和里德伯原子的减速和冷碰撞

基本信息

  • 批准号:
    17550004
  • 负责人:
  • 金额:
    $ 2.3万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2005
  • 资助国家:
    日本
  • 起止时间:
    2005 至 2006
  • 项目状态:
    已结题

项目摘要

1. Translational control of moleculesIn this research project the investigators have demonstrated by calculations that molecules in a cold beam can be decelerated to standstill at 13 mK using a Stark decelerator which applies time-varying electric fields. The results have been presented in the 7th Asian International Seminar on Atomic and Molecular Physics (Chennai, India) as an invited talk, and the proceeding paper is now under referee processes.2. Phonon dispersion curves of nanosize carbon networksDeceleration and translational cooling of molecules could make a significant impact on research area studying collisions of the molecules in the beam and surfaces. In this respect the investigators has established the phonon dispersion curves of polyacenes, which can act as a model for those of highly oriented pyrolytic graphite (HOPG) in surface scattering experiments. The paper has been published in the Journal of Chemical Physics, enabling readers in material sciences to understand. Those for multirow carbon nanoribbons have also been elucidated, and will be published to a good shortly. The point is that the results are based on the rigorous spectroscopic knowledge on polycyclic aromatic hydrocarbons.3. Orientation control of moleculesThe Raman intensity reflects the induced polarizability in molecules. Large Raman scattering activities have been found for substituted benzene analogues upon global motion. The ring-chain interactions involving σ-π orbital mixing have been calculated to play a key role. When halogen atoms or the bridge structures of two rings are introduced, the Raman intensity have been calculated to be significantly large. This fact supports the above mechanism strongly.
1. 分子的平移控制在这个研究项目中,研究人员通过计算证明,使用施加时变电场的斯塔克减速器可以将冷光束中的分子以 13 mK 的速度减速至静止状态。该成果已作为邀请报告在第七届亚洲原子与分子物理国际研讨会(印度钦奈)上发表,论文目前正在审稿过程中。2.纳米级碳网络的声子色散曲线分子的减速和平移冷却可能会对研究梁和表面中分子碰撞的研究领域产生重大影响。在这方面,研究人员建立了多并苯的声子色散曲线,它可以作为表面散射实验中高取向热解石墨(HOPG)的声子色散曲线。论文已发表在《化学物理杂志》上,方便材料科学领域的读者理解。多排碳纳米带的相关研究也已得到阐明,并将很快发表。重点是,该结果是基于对多环芳烃严格的光谱知识。 3.分子的取向控制拉曼强度反映了分子中诱导的极化率。已发现取代苯类似物在整体运动时具有大的拉曼散射活性。据计算,涉及 σ-π 轨道混合的环链相互作用发挥着关键作用。当引入卤素原子或两个环的桥结构时,拉曼强度被计算为非常大。这一事实有力地支持了上述机制。

项目成果

期刊论文数量(11)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Large Raman-scattering activities for the low-frequency modes of substituted benzenes : Induced polarizability and stereo-specific ring-substituent interactions
取代苯低频模式的大拉曼散射活性:诱导极化性和立体特异性环取代基相互作用
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    T.Kawachi;K.Nagashima;M.Kishimoto;N.Hasegawa;M.Tanaka;Y.Ochi;M.Nishikino;H.Kawazome;R.Tai;K.Namikawa Y.Kato;T.Fujimoto;T.Fujimoto;T.FUjimoto;Yoshihiro Yamakita;山北佳宏;Yoshihiro Yamakita et al.;Yoshihiro Yamakita;Yoshihiro Yamakita;Yoshihiro Yamakita
  • 通讯作者:
    Yoshihiro Yamakita
The Stark effect and field ionization in the triplet Rydberg states of helium atoms
氦原子三线态里德堡态的斯塔克效应和场电离
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    T.Kawachi;K.Nagashima;M.Kishimoto;N.Hasegawa;M.Tanaka;Y.Ochi;M.Nishikino;H.Kawazome;R.Tai;K.Namikawa Y.Kato;T.Fujimoto;T.Fujimoto;T.FUjimoto;Yoshihiro Yamakita;山北佳宏;Yoshihiro Yamakita et al.;Yoshihiro Yamakita;Yoshihiro Yamakita;Yoshihiro Yamakita;Yoshihiro Yamakita;山北 佳宏;Risako Takahashi
  • 通讯作者:
    Risako Takahashi
多環芳香族炭化水素とナノ炭素構造の振動分光
多环芳烃和纳米碳结构的振动光谱
  • DOI:
  • 发表时间:
    2007
  • 期刊:
  • 影响因子:
    0
  • 作者:
    T.Kawachi;K.Nagashima;M.Kishimoto;N.Hasegawa;M.Tanaka;Y.Ochi;M.Nishikino;H.Kawazome;R.Tai;K.Namikawa Y.Kato;T.Fujimoto;T.Fujimoto;T.FUjimoto;Yoshihiro Yamakita;山北佳宏
  • 通讯作者:
    山北佳宏
The Stark effect and translational control of hydrogen molecules
斯塔克效应与氢分子的平移控制
  • DOI:
  • 发表时间:
    2006
  • 期刊:
  • 影响因子:
    0
  • 作者:
    T.Kawachi;K.Nagashima;M.Kishimoto;N.Hasegawa;M.Tanaka;Y.Ochi;M.Nishikino;H.Kawazome;R.Tai;K.Namikawa Y.Kato;T.Fujimoto;T.Fujimoto;T.FUjimoto;Yoshihiro Yamakita;山北佳宏;Yoshihiro Yamakita et al.;Yoshihiro Yamakita;Yoshihiro Yamakita;Yoshihiro Yamakita;Yoshihiro Yamakita
  • 通讯作者:
    Yoshihiro Yamakita
Molecular vibrations of [n]oligoacenes (n=2-5, and 10) and phonon dispersion relations of polyacene
[n]低聚并苯(n=2-5和10)的分子振动和多并苯的声子色散关系
  • DOI:
  • 发表时间:
    2007
  • 期刊:
  • 影响因子:
    0
  • 作者:
    T.Kawachi;K.Nagashima;M.Kishimoto;N.Hasegawa;M.Tanaka;Y.Ochi;M.Nishikino;H.Kawazome;R.Tai;K.Namikawa Y.Kato;T.Fujimoto;T.Fujimoto;T.FUjimoto;Yoshihiro Yamakita
  • 通讯作者:
    Yoshihiro Yamakita
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YAMAKITA Yoshihiro其他文献

YAMAKITA Yoshihiro的其他文献

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{{ truncateString('YAMAKITA Yoshihiro', 18)}}的其他基金

Penning ionization electron spectroscopy and multi-reflection ion imaging of clusters
团簇的潘宁电离电子能谱和多重反射离子成像
  • 批准号:
    25620010
  • 财政年份:
    2013
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Challenging Exploratory Research
Reaction dynamics of molecular clusters studied by using molecular control and ion imaging techniques
利用分子控制和离子成像技术研究分子簇的反应动力学
  • 批准号:
    22550004
  • 财政年份:
    2010
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Production of ultracold molecular beams and application to inelastic surface scattering
超冷分子束的产生及其在非弹性表面散射中的应用
  • 批准号:
    19550002
  • 财政年份:
    2007
  • 资助金额:
    $ 2.3万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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Probing quark gluon plasma by heavy quarks in heavy-ion collisions
  • 批准号:
    11805087
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    30.0 万元
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Mapping Quantum Chromodynamics by Nuclear Collisions at High and Moderate Energies
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    面上项目

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