Watanabe Naoki

ワタナベナオキ | Watanabe Naoki

Affiliation and department：
Job title： Professor
Homepage URL (1)： http://www.lowtem.hokudai.ac.jp/astro/index.html

Research field (2)： Space and planetary science , Semiconductors, optical and atomic physics

Research keywords (6)：原子・分子 , 星間物質 , 低温表面反応 , atoms & molecules , ice surface , Astrochemistry

Research theme for competitive and other funds (32)：

2022 - 2027 ラジカルの拡散が活性化させる星間塵表面での分子進化:複雑有機分子生成の鍵
2020 - 2025 Theoretical astrochemistry based on microscopic processes in the gas and solid phases
2020 - 2025 Next Generation Astrochemistry: Transformative Action Based on Understandings of Microscopic Chemical Processes
2021 - 2024 極低温星間塵表面における有機硫黄分子の化学反応
2017 - 2022 Chemical evolution on cosmic dust: approach from elementary processes

2017 - 2018 星間分子雲初期に起こるケイ酸塩星間塵表面での分子進化

2012 - 2017 Mechanisms of formation and isotope fractionation of interstellar molecules on cosmic dust

2014 - 2016 Experiments on io-induced nucleation to clarify a new mechanism of cosmic dust formation

2013 - 2016 Development of ultrahigh vacuum (UHV) transmission electron microscope for in-situ observation of ice

2013 - 2016 Quantitative investigation for ion-induced nucleation under non-equilibrium conditions of association/dissociation reactions: experimental approaches for elementary formation processes

2010 - 2013 Quantitative elucidation for ion induced nucleation in the atmosphere: Approach through the experiments for elementary processes

2012 - 2012 星間塵表面反応:分子進化と同位体分別機構の新展開

2010 - 2012 Observation of surface structure of amorphous ice and role of amorphous ice in surface atomic reactions at low temperatures

2009 - 2011 Ice surface processes: tunneling reactions and isotope fractionation

2009 - 2011 Deuterium fractionation of water molecule via grain surface reactions at very low temperatures

2005 - 2009 Evaluation of catalytic effect of amorphous ice on the surface atomic reactions

2007 - 2008 Role of cosmic-grain surface reactions in the deuterium fractionationof interstellar molecules

2004 - 2008 Experimental and theoretical studies of the evolution from dust to exoplanets

2004 - 2005 星間塵表面における重水素濃縮機構

2004 - 2005 Surface reactions of atoms and the mechanism of deuterium fractionation on inter Stellar dusts at the very low temperature

2003 - 2004 UV-induced diamond formation in interstellar clouds

2001 - 2003 Development of electrostatic accelerator for ice dust and the aggregates

2000 - 2001 Collisional sticking of organic grains in the solar nebula

1999 - 2000 The observation of the growth and ifrured absorption for dust particles ecclosed in a small scale space

1998 - 1999 Development of comet nucleus simulation experiments

1997 - 1999 Structure and physical properties of impure amorphous interstellar icy grains

1997 - 1998 アモルファス氷星間塵上での水素分子生成機構

1996 - 1998 The development of a simulation device for the nucleation in the primordial solar nebula.

原子・イオン・分子の光電離過程の研究

アモルファス氷表面上における原子・分子素過程

Study on Atomic,ionic,and Molecular Photoionization processes

Atomic and Molecular Processes on Amorphous ice surface

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Papers (218)：

G. Sabatini, L. Podio, C. Codella, Y. Watanabe, M. De Simone, E. Bianchi, C. Ceccarelli, C. J. Chandler, N. Sakai, B. Svoboda, et al. FAUST. Astronomy & Astrophysics. 2024. 684. L12-L12
Masashi Tsuge, Germán Molpeceres, Yuri Aikawa, Naoki Watanabe. Surface diffusion of carbon atoms as a driver of interstellar organic chemistry. Nature Astronomy. 2023
Y. Nakai, W. M. C. Sameera, K. Furuya, H. Hidaka, A. Ishibashi, N. Watanabe. Methanol Formation through Reaction of Low-energy CH3 + Ions with an Amorphous Solid Water Surface at Low Temperature. The Astrophysical Journal. 2023
Masashi TSUGE, Naoki WATANABE. Radical reactions on interstellar icy dust grains: Experimental investigations of elementary processes. Proceedings of the Japan Academy, Series B. 2023. 99. 4. 103-130
Thanh Nguyen, Yasuhiro Oba, W. M. C. Sameera, Kenji Furuya, Akira Kouchi, Naoki Watanabe. Surface Reaction of Methyl Mercaptan (CH3SH) with Hydrogen Atoms on Amorphous Solid Water. The Astrophysical Journal. 2023

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MISC (52)：

Atsuki Ishibashi, Yasuhiro Oba, Tetsuya Hama, Akira Kouchi, Naoki Watanabe. Inversion of surface voltage on H2O films affecting sublimation of CO underlayer. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 2019. 258
Ayane Miyazaki, Naoki Watanabe, W. M. C. Sameera, Tetsuya Hama, Hiroshi Hidaka, Akira Kouchi. Activation energy of OH-radical diffusion on water ice surface. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 2019. 258
Naoki Watanabe, Ayane Miyazaki, W. M. C. Sameera, Tetsuya Hama, Akira Kouchi. Behavior of OH radical on ice. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 2019. 258
香内晃, 木村勇気, 大場康弘, 羽馬哲也, 渡部直樹, 橘省吾, 土山明, 延寿里美, 大坪貴文. アモルファスMg₂SiO₄微粒子を覆った氷の光化学反応によるフォルステライト結晶の生成. 日本地球惑星科学連合大会予稿集(Web). 2019. 2019
Yukiko Yarnall, Hiroshi Hidaka, Yasuhiro Oba, Tetsuya Hama, Akira Kouchi, Naoki Watanabe. Reaction experiments on H exposure of solid methanol at low temperatures. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY. 2018. 255

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Lectures and oral presentations (53)：

Experimental approach to fast ortho to para nuclear spin conversion of hydrogen molecule on dust grain analogues
(COSPAR 2021, Chemical Evolution and Origin of Life)
Clarifying a proton-hole transfer in ice by the new method of OH detection
(Frontier of structures and dynamics of water by advanced spectroscopic techniques 2020)
Behavior of OH radical on ice
(Water in the Universe in the ACS National Meeting)
Ortho-to-Para Ratios in water and H2 desorbed from ice --Experimental view--
(Astrochemistry: From nanometers to megaparsecs - A symposium in honour of John H. Black)
Behavior of OH Radical on an Ice Surface at Low Temperatures
(35th Symposium on Chemical Kinetics and Dynamics)

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Education (2)：

1990 - 1993 Tokyo Metropolitan University Graduate School, Division of Natural Science
1988 - 1990 Tokyo Metropolitan University Graduate School of Science

Professional career (1)：

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Work history (9)：

2022/04 - 現在北海道大学低温科学研究所所長
2009/10 - 現在 Hokkaido University
2018/04 - 2024/03 北海道大学ディスティングイッシュトプロフェッサー
2020/10 - 2022/03 北海道大学総長補佐
2006 - 2009/09 Hokkaido University Institute of Low Temperature Science

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Awards (1)：

2020/04 - 令和2年度科学技術分野の文部科学大臣表彰科学技術賞研究部門

Association Membership(s) (4)：

JAPAN GEOSCIENCE UNION , 原子衝突学会 , THE JAPANESE SOCIETY FOR PLANETARY SCIENCES , 日本物理学会

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