2009 Fiscal Year Final Research Report
Basic Processes in Hydrogen Atom-Surface Reactions: Spin Effect, Reaction Dynamics, and Origin of Interstellar Hydrogen Molecules
| Project/Area Number |
17002011
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| Research Category |
Grant-in-Aid for Specially Promoted Research
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
Engineering
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| Research Institution | Kyushu Institute of Technology |
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Principal Investigator |
NAMIKI Akira Kyushu Institute of Technology, 工学研究院, 教授 (40126941)
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| Project Period (FY) |
2005 – 2009
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| Keywords | 水素原子 / シリコン表面 / 吸着脱離 / スピン偏極原子 / 反応ダイナミックス / 水氷表面 |
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| Research Abstract |
The reaction of hydrogen atoms on Si, Ru, and water ice surfaces has been studied to elucidate kinetics and dynamics of thermal desorption as well as hydrogen abstraction of hydrogen adatoms. A historically long standing problem raised in hydrogen desorption from Si(100) surfaces is solved. In contrast to Si or Ru surfaces, a hydrogen molecular desorption due to abstraction is not confirmed on water ice surfaces even at around 10 K, suggesting that residence time of hydrogen atoms is very short on the water ice surfaces. A spin-polarized-hydrogen-surface reaction system is constructed to investigate spin dependence on hydrogen sticking onto Si(111) surfaces.
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