2020 Fiscal Year Final Research Report
A study of photoisomerization using ultrafast photoemission spectroscopy of liquids with ultrashort 80-nm extreme UV pulses
| Project/Area Number |
19K15503
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 32010:Fundamental physical chemistry-related
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | 液体の超高速光電子分光 / 高次高調波発生 / フィラメンテーション四光波混合 / 溶媒和電子 |
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| Outline of Final Research Achievements |
Extreme UV pulses generated by high harmonic generation method enables us to measure true photoemission spectra of solvated electrons, which are free from inelastic scattering effect. Using these spectra, we utilized spectral retrieval method, by which inelastic scattering effect can be removed from the spectra observed with UV pulses. We also developed vacuum UV pulses using filamentation four wave mixing to observe the ultrafast generation, solvation, and recombination dynamics of solvated electrons in methanol and water in real time.
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| Free Research Field |
化学反応ダイナミクス
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| Academic Significance and Societal Importance of the Research Achievements |
極端紫外および真空紫外域の光子エネルギーの高い光パルスを光電子分光に応用することによって、液体の光電子分光で常に問題になる電子の非弾性散乱を抑制する、もしくはその効果を取り除く方法論を提案したことは、溶液中で起こる化学反応を、電子エネルギーの観点から、より明確に議論することを可能にし、特に溶液化学の初期過程の解明に寄与する。
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