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

• 批准号: 17550004
• 负责人: YAMAKITA Yoshihiro
• 金额: $ 2.3万
• 依托单位: Tohoku University
• 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
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17550004/
• 关键词: chemical physics; collisions; atomic ＆ molecular physics; cold molecules; tunneling; cold beam; Stark effect; Rydberg states

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。分子的翻译控制该研究项目研究人员通过计算证明，冷束中的分子可以使用应用时变电场的鲜明的减速器减速在13 mk处停滞。结果已在第七届亚洲国际原子和分子物理学研讨会（印度钦奈）作为邀请的演讲中介绍，而诉讼论文现在正在裁判程序中。2。纳米化碳网络的调子分散曲线和分子的翻译冷却可以对研究区域和表面中分子的碰撞的研究区域产生重大影响。在这方面，研究者已经建立了多聚糖的光子分散曲线，该曲线可以充当表面散射实验中高度定向的热解石墨（HOPG）的模型。该论文已发表在《化学物理学杂志》上，使物质科学的读者能够理解。那些用于多碳纳米管的碳纳米骨也已被阐明，并将很快出版。关键是结果是基于对多环芳烃的严格光谱知识。3。分子拉曼强度的方向控制反映了分子中诱导的极化性。在全球运动时，已经发现了用于取代的苯类似物的大型拉曼散射活动。已经计算出涉及σ-π轨道混合的环链相互作用以发挥关键作用。当引入两个环的卤素原子或桥梁结构时，已经计算出拉曼强度的大量。这个事实强烈支持上述机制。

项目成果

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

• 发表时间: 2006
• 期刊: The Journal of Chemmical Physics 124(10)
• 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

• 发表时间: 2006
• 期刊: Journal of Plasma and Fusion Research Series 7
• 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

The Stark effect and translational control of hydrogen molecules

斯塔克效应与氢分子的平移控制

• 发表时间: 2006
• 期刊: Journal of Plasma and Fusion Research Series 7
• 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

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

• 发表时间: 2007
• 期刊: 化学と工業 60(3)
• 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

Controlling Translational motion of neutral molecules in inhomogeneous electric fields

控制非均匀电场中中性分子的平移运动

• 发表时间: 2006
• 期刊: Butsuri 61(1)
• 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;Yoshihiro Yamakita et al.;Yoshihiro Yamakita
• 通讯作者: Yoshihiro Yamakita