New phase of reaction dynamics studies on O(^1D) atom reaction by utilizing very slow O(^1D) atom
| Project/Area Number |
18550017
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Kanagawa Institute of Technology |
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Principal Investigator |
FUJIMURA Yo Kanagawa Institute of Technology, Center for Basic Education and Integrated Lerning, Associate Professor (00222266)
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| Project Period (FY) |
2006 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥2,040,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
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| Keywords | Gas phase reaction / Reaction dynamics / Oxygen atom / Excited state / Low-energy collision / Laser spectroscop / Rovibrational state distribution |
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| Research Abstract |
Reaction dynamics of O(^1D) is studied by utilizing very slow O(^1D) atom. The aim of this study is to elucidate the contribution of excited potential surfaces of O(^1D) and reactant molecule system. O(^1D) atom is very reactive species due to its large reactive cross section by virtue of its ability of insertion to chemical bonds. Insertion reaction has no barrier and large cross section. Thus, O(^1D) reaction is very important in atmospheric and combustion chemistry. By contrast, excited states of O(^1D) reaction system generally have entrance barrier that lowers reactive cross section. However, recent ab initio computational studies have indicated that the height of entrance barriers of excited states of system are. relatively low These results suggest excited states can have some contribution on O(^1D) reaction. Therefore, contribution of excited stated in O(^1D) reaction is a sensitive topic that can have some impact on temperature dependence of reaction rate constants of important O(^1D) reactions in atmospheric and combustion chemistry. Reaction dynamics studies so for have been utilizing high-energy O(^1D) atom produced from UV photodissociation of N_2O of O_3 molecules. Low height of excited state surface suggests that the traditional studies are not free from the contribution of excited state surface although its amount is not clear. To elucidate the extent of the contribution of excited state surface, this study is focused on low-energy O ^1D) atom reaction by comparing high-and low-energy O(^1D) atom reactions. Low-energy O(^1D) atom is generated by utilizing long-wavelength wing of UV absorption band of O_3 that is near O(^1D) production threshold. In the preliminarily results in this study, product rovibrational state distributions of high-and low-energy O(^1D) atom reaction are relatively similar, indicating low contribution of excited state in O(^1D) reaction as opposed to the prediction of computational studies.
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Report
(3 results)
Research Products
(4 results)
