| Project/Area Number |
12440165
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Osaka University (2002)
Okazaki National Research Institutes (2000-2001) |
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Principal Investigator |
KASAI Toshio Osaka University, Graduate School of Science, Chemistry, Professor, 大学院・理学研究科, 教授 (20152613)
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| Co-Investigator(Kenkyū-buntansha) |
OKADA Michio Osaka University, Graduate School of Science, Chemistry, Assistant Professor, 大学院・理学研究科, 助手 (30281116)
CHE Dock-chil Osaka University, Graduate School of Science, Chemistry, Assistant Professor, 大学院・理学研究科, 助手 (20273732)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Effect of molecular orientation / Stereodynamics / Hydrogen bonded (DCl)_2 dimer / Electrostatic hexapole method for orienting molecules / [ClDCl] transition state / Doppler-selected TOF method / Hot-hydrogen mechanism on surface reactions / Single Ω state OH radical |
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| Research Abstract |
1) The OH(^2P) radicals were produced by a pulsed glow DC discharge of H_2O.The focusing curve for the single quantum state |JWM_J> = |1/2 1/2 1/2 > of OH(^2P) radicals was measured using the combined method of an electrostatic hexapole state-selection with 1-m in length and a laser induced fluorescence technique for the OH(A ← X) transition at 308 nm
2) Non-destructive size selection of neutral clusters was carved out using the hexapole electric field. The photodissociation of DCI dimer was studied, in which DCl dimer was preferentially selected from the DCl cluster beam using the same hexapole electrostatic field prior to the photolysis. We were able to observe the internal energy distribution of the [ClDCl] transient species resulting from the hydrogen atom elimination from (DCI)_2
3) We constructed a UHV compatible oriented-molecular-beam machine with six lm rods in order to elucidate the stereodynamics in surface reactions. We characterized this machine using a reagent gas of methylchloride to ensure satisfactory specification for conducting surface experiment in schedule and we confirmed that the orientational degee of the selected beam is as 86% pure as single |JKM> = |111> state
4) We proposed a new hot-atom mediated mechanism in the dissociative-adsorption process of hydrogen molecule on Ir single crystal surfaces, based on the analysis of reaction kinetics
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