Germán Molpeceres, Joan Enrique-Romero, Atsuki Ishibashi, Yasuhiro Oba, Hiroshi Hidaka, Thanja Lamberts, Yuri Aikawa, Naoki Watanabe. Hydrogenation of HOCO and formation of interstellar CO2: A not so straightforward relation. Monthly Notices of the Royal Astronomical Society. 2025
Atsuki Ishibashi, Hiroshi Hidaka, W. M. C. Sameera, Yasuhiro Oba, Naoki Watanabe. Determination of the Branching Ratio of CH3OH + OH Reaction on Water Ice Surface at 10 K. The Astrophysical Journal. 2024
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
W. M. C. Sameera, Avon P. Jayaweera, Atsuki Ishibashi, Hiroshi Hidaka, Yasuhiro Oba, Naoki Watanabe. A systematic mechanistic survey on the reactions between OH radical and CH3OH on ice. Faraday Discussions. 2023. 245. 508-518
A. Miyazaki, M. Tsuge, H. Hidaka, Y. Nakai, N. Watanabe. Direct Determination of the Activation Energy for Diffusion of OH Radicals on Water Ice. The Astrophysical Journal Letters. 2022. 940. 1. L2-L2
W. M. C. Sameera, Bethmini Senevirathne, Thanh Nguyen, Yasuhiro Oba, Atsuki Ishibashi, Masashi Tsuge, Hiroshi Hidaka, Naoki Watanabe. Modelling the Radical Chemistry on Ice Surfaces: An Integrated Quantum Chemical and Experimental Approach. Frontiers in Astronomy and Space Sciences. 2022. 9
Akira Kouchi, Yuki Kimura, Kensei Kitajima, Hiroyasu Katsuno, Hiroshi Hidaka, Yasuhiro Oba, Masashi Tsuge, Tomoya Yamazaki, Kazuyuki Fujita, Tetsuya Hama, et al. UV-Induced Formation of Ice XI Observed Using an Ultra-High Vacuum Cryogenic Transmission Electron Microscope and its Implications for Planetary Science. Frontiers in Chemistry. 2021. 9
A. Ishibashi, H. Hidaka, Y. Oba, A. Kouchi, N. Watanabe. Efficient Formation Pathway of Methyl Formate: The Role of OH Radicals on Ice Dust. The Astrophysical Journal Letters. 2021
Akira Kouchi, Masashi Tsuge, Tetsuya Hama, Yasuhiro Oba, Satoshi Okuzumi, Sin-iti Sirono, Munetake Momose, Naoki Nakatani, Kenji Furuya, Takashi Shimonishi, et al. Transmission Electron Microscopy Study of the Morphology of Ices Composed of H2O, CO2, and CO on Refractory Grains. The Astrophysical Journal. 2021. 918. 2. 45-45
Masashi Tsuge, Hiroshi Hidaka, Akira Kouchi, Naoki Watanabe. Diffusive Hydrogenation Reactions of CO Embedded in Amorphous Solid Water at Elevated Temperatures ∼70 K. The Astrophysical Journal. 2020. 900. 2. 187-187
Yuki Kimura, Rikako Sato, AkiraTsuchiyama, YusukeTamenori, Tetsuya Hama, Hiroshi Hidaka, Naoki Watanabe, Akira Kouchi, Hiroko Nagahara. Formation experiments of organic molecules by catalytic reactions in low-temperature and low-pressure environments. Low Temperature Science. 2020. 78. 79-90
Hitomi Kobayashi, Hiroshi Hidaka, Thanja Lamberts, Tetsuya Hama, Hideyo Kawakita, Johannes Kaestner, Naoki Watanabe. Hydrogenation and Deuteration of C2H2 and C2H4 on Cold Grains: A Clue to the Formation Mechanism of C2H6 with Astronomical Interest. ASTROPHYSICAL JOURNAL. 2017. 837. 2. 155-169