2012 Fiscal Year Final Research Report
Fundamental processes of low-kinetic-energy-photoelectron diffraction for gaseous molecules.
| Project/Area Number |
22550025
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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 | High Energy Accelerator Research Organization |
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Principal Investigator |
ADACHI Jun-ichi 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 研究機関講師 (10322629)
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| Co-Investigator(Renkei-kenkyūsha) |
YAGISHITA Akira 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (80157966)
FUJIKAWA Takashi 千葉大学, 大学院・融合科学研究科, 教授 (30114987)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 光電子回折 / 基本気相分子 / 軟 X 線放射光分光 / 内殻光電離 |
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| Research Abstract |
We investigated core-level photoionization from the viewpoint that it can serve as a low-energy-photoelectron diffraction method. For typical and simple molecules in the gas phase, we measured the molecular frame photoelectron angular distributions and recoil frame photoelectron angular distributions using a coincidence technique. The results for CO molecules showed that the back-scattered intensities depend on the kinetic energy of the photoelectron, which can, in one of the simplest cases, be attributed to a mechanism that leads an extended X-ray absorption fine structure. We compared experimental results with calculations based on X-ray photoelectron diffraction theory and found that the angular distribution comes from the interference be tween the direct photoelectron wave and the scattered waves.
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