Orbital pattern imaging

轨道图案成像

• 批准号: 10304046
• 负责人: UDAGAWA Yasuo
• 金额: $ 21.7万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10304046/
• 关键词: orbital pattern; electron momentum spectroscopy; (e, 2e); オービタンパターン; e,2e

Properties of molecules are determined by their wave function. By coincident measurements of energy and momentum of the inelastically scattered electron and the ionized electron produced simultaneously, it is possible to determine the wave function of a selected orbital of the target molecule. This technique is called "electron momentum spectroscopy" and has been developed so far by several groups in Australia, U.S.A., and Canada. Being the signals so weak, however, both resolution and S/N ratio are insufficient for quantitative analysis. This project has aimed at a development of a more efficient as well as high-resolution apparatus.A 2-dimensional detector has been purchased, and coincidence detection electronics and electron sources have been constructed with the present grant in aid together with a chamber equipped with a turbomolecular pump to make the apparatus. The specification of the total system has been confirmed with He, about which wave functions have been accurately determined.So far functional forms of HOMO (highest occupied molecular orbital) of glyoxal (CィイD22ィエD2HィイD22ィエD2OィイD22ィエD2) molecule has been studied with this system, and preliminary results have been sent to an international conference (Many-Particle Spectroscopy of Atoms, Molecules and Surfaces) which is going to be held at Halle, Germany, this summer.

分子的性质是由它们的波函数决定的。通过同时测量非弹性散射电子和电离电子的能量和动量，可以确定目标分子的选定轨道的波函数。这种技术被称为“电子动量谱”，迄今为止已经由澳大利亚、美国、和加拿大然而，由于信号如此微弱，分辨率和信噪比都不足以进行定量分析。本计画的目标是发展一种更有效、更高解析度的装置，已购置一个二维侦测器，并利用目前的补助金，建造符合侦测电子线路与电子源，以及一个配备分子泵的腔室，以制造该装置。用He确定了整个系统的规格，精确地确定了波函数，并给出了HOMO的泛函形式（最高占据分子轨道）用该系统对（C_（12）D_（22）H_（12）D_（22）O_（12）D_（22）O_（12）D_（22））分子进行了研究，初步结果已提交国际会议（原子、分子和表面的多粒子光谱学），今年夏天将在德国的哈雷举行。

项目成果

Masahiko Takahashi,Keiji Otsuka and Yasuo Udagawa: "Electron momentum spectroscopy study of furan"Chem.Phys.. 227. 375-387 (1998)

Masahiko Takahashi、Keiji Otsuka 和 Yasuo Udakawa：“呋喃的电子动量谱研究”Chem.Phys.. 227. 375-387 (1998)

Masahiko Takahashi,Ryuji Ogino and Yasuo Udagawa: "Outer valence electronic structure of pyrrole studied by electron momentum spectroscopy"Chem.Phys.Lett.. 288. 821-827 (1998)

Masahiko Takahashi、Ryuji Ogino 和 Yasuo Udakawa：“通过电子动量光谱研究吡咯的外价电子结构”Chem.Phys.Lett.. 288. 821-827 (1998)

高橋、宇田川: "電子運動量分光-波動関数形の直接観測-" 分光研究. 47. 169-179 (1998)

高桥宇田川：“电子动量光谱 - 波函数形式的直接观察”光谱研究 47. 169-179 (1998)。

Masahiko Takahashi, Motoaki Matsuo, and Yasuo Udagawa: "An electron momentum spectroscopy study on through-space and through-bond interactions in 1,4-diazabicyclo [2.2.2] octane"Chem. Phys. Lett.. 308. 195-198 (1999)

Masahiko Takahashi、Motoaki Matsuo 和 Yasuo Udakawa：“1,4-二氮杂双环 [2.2.2] 辛烷中通过空间和通过键相互作用的电子动量光谱研究”Chem。

Masahiko Takahashi,Ryuji Ogino,and Yasuo Udagawa: "An Electron Momentum Spectroscopy of Norbornadiene and 1,4-Cyclohexadiene: Evidence of Through-Space and Through-Bond Interactions"Chem. Phys. Lett.. 288. 714-718 (1998)

Masahiko Takahashi、Ryuji Ogino 和 Yasuo Udakawa：“降冰片二烯和 1,4-环己二烯的电子动量谱：通过空间和通过键相互作用的证据”Chem。