| Project/Area Number |
10304046
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | TOHOKU UNIVERSITY |
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Principal Investigator |
UDAGAWA Yasuo Res. Inst. Scientific Measurements, Prof., 科学計測研究所, 教授 (00004458)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Masahiko Res. Inst. Scientific Measurements, Asso. Prof., 科学計測研究所, 助教授 (80241579)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥33,900,000 (Direct Cost: ¥33,900,000)
Fiscal Year 1999: ¥13,100,000 (Direct Cost: ¥13,100,000)
Fiscal Year 1998: ¥20,800,000 (Direct Cost: ¥20,800,000)
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| Keywords | orbital pattern / electron momentum spectroscopy / (e, 2e) / オービタンパターン / e,2e |
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| Research Abstract |
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.
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