Masashi Tsuge
Last Updated :2026/04/21
- Affiliations, Positions
- Hiroshima University, Associate Professor
Basic Information
Major Professional Backgrounds
- 2021/05, 2026/03, Hokkaido University, Institute of Low Temperature Science Frontier Ice and Snow Science Section, Assistant Professor
- 2017/08, 2021/04, Hokkaido University, Intsitute of Low Temperature Science, Appointed Assistant Professor
- 2014/01, 2017/07, National Chiao Tung University, Department of Applied Chemistry, Postdoctoral Fellow
- 2011/02, 2013/12, University of Helsinki, Department of Chemistry, Postdoctoral Researcher
- 2007/04, 2011/01, Niigata University of Pharmacy and Applied Life Sciences, Faculty of Pharmaceutical Sciences
Educational Backgrounds
- Tokyo Institute of Technology, Graduate School of Science and Engineering, 2004/04, 2007/03
- Tokyo Institute of Technology, Graduate School of Science and Engineering, 2002/04, 2004/03
- Tokyo Institute of Technology, School of Science, Department of Chemistry, 1998/04, 2002/03
Academic Degrees
- Doctor of Science, Tokyo Institute of Technology
In Charge of Primary Major Programs
Research Fields
- Chemistry;Basic chemistry;Physical chemistry
- Mathematical and physical sciences;Earth and planetary science;Geochemistry / Cosmochemistry
Research Keywords
- Astrochemistry
- solid para-hydrogen
- laser spectroscopy
Affiliated Academic Societies
- JAPAN SOCIETY FOR MOLECULAR SCIENCE
- The Atomic Collision Society of Japan
- THE CHEMICAL SOCIETY OF JAPAN
- The Spectroscopical Society of Japan
Research Activities
Academic Papers
- H2 Ortho–Para Spin Conversion on Inhomogeneous Grain Surfaces. II. Impact of the Rotational Energy Difference between Adsorbed Ortho-H2 and Para-H2 and Implication for Deuterium Fractionation Chemistry, The Astrophysical Journal, 1001, 62, 20260406
- Methanol Formation via the Radical–Radical Reaction of OH and CH3 Radicals Undergoing Transient Diffusion on Ice at 10 to 60 K, The Astrophysical Journal, 998, 249, 20260220
- Methylamine Formation on Amorphous Solid Water via the Diffusive CH3 + NH2 Reaction as Investigated by the Cs+ Ion Pickup Method, ACS Earth and Space Chemistry, 9(12), 2857-2865, 20251120
- Formation of Unsaturated Carbon Chains through Carbon Chemisorption on Solid CO, The Astrophysical Journal, 993(2), 177-177, 20251031
- Molecular mobility of extraterrestrial ices: surface diffusion in astrochemistry and planetary science, Physical Chemistry Chemical Physics, 19630-19641, 20250902
- Signature of Proton–Hole Transfer in Hydrogen-Bonded Solids at 10 K, The Journal of Physical Chemistry Letters, 15(47), 11701-11708, 20241128
- Methane Formation Efficiency on Icy Grains: Role of Adsorption States, The Astrophysical Journal, 973(2), 80-80, 20240920
- Photodesorption efficiency of OH radical on the ice surface in the wavelength range from ultraviolet to visible, Chemical Physics Letters, 848, 141384-141384, 202408
- Carbon Atom Condensation on NH3–H2O Ices. An Alternative Pathway to Interstellar Methanimine and Methylamine, The Journal of Physical Chemistry A, 128, 3874-3889, 20240506
- Coverage dependent H2 desorption energy: a quantitative explanation based on encounter desorption mechanism, Monthly Notices of the Royal Astronomical Society, 526(2), 2394-2399, 20230926
- ★, Surface diffusion of carbon atoms as a driver of interstellar organic chemistry, Nature Astronomy, 7, 1351-1358, 20230914
- Radical reactions on interstellar icy dust grains: Experimental investigations of elementary processes, Proceedings of the Japan Academy, Series B, 99(4), 103-130, 20230428
- Infrared spectra of isoquinolinium (iso-C9H7NH+) and isoquinolinyl radicals (iso-C9H7NH and 1-, 3-, 4-, 5-, 6-, 7-, and 8-iso-HC9H7N) isolated in solid para-hydrogen, Physical Chemistry Chemical Physics, 25, 11934-11950, 20230220
- Direct Determination of the Activation Energy for Diffusion of OH Radicals on Water Ice, The Astrophysical Journal Letters, 940(1), L2-L2, 20221101
- Chiral Ice Crystals in Space, Chirality - New Insights [Working Title], 20220822
- Infrared and Laser-Induced Fluorescence Spectra of Sumanene Isolated in Solid para-Hydrogen, The Journal of Physical Chemistry A, 126(32), 5283-5293, 20220818
- Penetration of Nonenergetic Hydrogen Atoms into Amorphous Solid Water and their Reaction with Embedded Benzene and Naphthalene, The Astrophysical Journal, 933(2), 138-138, 20220701
- Modelling the Radical Chemistry on Ice Surfaces: An Integrated Quantum Chemical and Experimental Approach, Frontiers in Astronomy and Space Sciences, 9, 890161, 20220530
- 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, 9, 799851-799851, 20211208
- Measurements of Ortho-to-para Nuclear Spin Conversion of H2 on Low-temperature Carbonaceous Grain Analogs: Diamond-like Carbon and Graphite, The Astrophysical Journal, 923(1), 71, 20211201
- Two-Body Metastable Dissociation of n-Pentane and n-Hexane Triplet Dications in Intense Femtosecond-Laser Fields, The Journal of Physical Chemistry A, 125(43), 9508-9517, 20211104
- Transmission Electron Microscopy Study of the Morphology of Ices Composed of H2O, CO2, and CO on Refractory Grains, The Astrophysical Journal, 918(2), 45-45, 20210906
- Formation of chiral CO polyhedral crystals on icy interstellar grains, Monthly Notices of the Royal Astronomical Society, 505(1), 1530-1542, 20210427
- Rapid Ortho-to-para Nuclear Spin Conversion of H2 on a Silicate Dust Surface, The Astrophysical Journal, 908(2), 234-234, 20210226
- Behavior of Hydroxyl Radicals on Water Ice at Low Temperatures, Accounts of Chemical Research, 54(3), 471-480, 20210202
- Delivery of Electrons by Proton-Hole Transfer in Ice at 10 K: Role of Surface OH Radicals, The Journal of Physical Chemistry Letters, 12(1), 704-710, 20210114
- Photostimulated desorption of OH radicals from amorphous solid water: Evidence for the interaction of visible light with an OH-ice complex, Physical Review A, 102(5), 52822, 20201120
- Infrared Spectra of Monohydrogenated Aniline, ortho- and para-HC6H5NH2, Generated in Solid para-Hydrogen, The Journal of Physical Chemistry A, 124(37), 7500-7510, 20200917
- UV-ray irradiation never causes amorphization of crystalline CO2: A transmission electron microscopy study, Chemical Physics Letters, 760, 137999-137999, 20200914
- Diffusive Hydrogenation Reactions of CO Embedded in Amorphous Solid Water at Elevated Temperatures ∼70 K, The Astrophysical Journal, 900, 187, 20200901
- Infrared spectroscopy of H+(CO)2 in the gas phase and in para-hydrogen matrices, The Journal of Chemical Physics, 153(8), 84305-84305, 20200828
- Experimental Approach to Physicochemical Hydrogen Processes on Cosmic Ice Dust, Journal of the Physical Society of Japan, 89, 51015, 20200515
- Infrared Spectra of Isomers of Protonated Aniline in Solid para-Hydrogen, The Journal of Physical Chemistry A, 124(11), 2253-2263, 20200319
- Electronic and vibrational structure in the S and S1 states of corannulene, The Journal of Chemical Physics, 151(23), 234305, 20191221
- Thermal Decomposition of the HXeCl···H2O Complex in Solid Xenon: Experimental Characterization of the Two-body Decomposition Channel, Chemical Physics Letters, 739, 136987-136987, 20191031
- Infrared spectrum of hydrogenated corannulene rim-HC20H10 isolated in solid para-hydrogen, The Journal of Chemical Physics, 151(4), 44304, 20190728
- Interactions of Atomic and Molecular Hydrogen with a Diamond-like Carbon Surface: H2 Formation and Desorption, The Astrophysical Journal, 878(1), 23, 20190610
- Infrared Spectrum of Protonated Corannulene H+C20H10 in Solid para-Hydrogen and its Potential Contribution to Interstellar Unidentified Infrared Bands, ACS Earth and Space Chemistry, 2(10), 1001-1010, 20181018
- Activation of Molecular Hydrogen by Arylcarbenes, Chemistry–A European Journal, 24(70), 18801-18808, 20181012
- Infrared spectra of 3-hydroxy-(1H)-pyridinium cation and 3-hydroxy-(1H)-pyridinyl radical isolated in solid para-hydrogen, The Journal of Chemical Physics, 149, 14306, 20180707
- Measurements of the Activation Energies for Atomic Hydrogen Diffusion on Pure Solid CO, The Astrophysical Journal Letters, 858(2), 20180510
- Spectroscopy of prospective interstellar ions and radicals isolated in para-hydrogen matrices, Physical Chemistry Chemical Physics, 20(8), 5344-5358, 2018
- Infrared spectra and anharmonic coupling of proton-bound nitrogen dimers N2–H+–N2, N2–D+–N2, and 15N2–H+–15N2 in solid para-hydrogen, Physical Chemistry Chemical Physics, 19(31), 20484-20492, 20170713
- Infrared spectra of HSCS+, c-HSCS, and HCS2− produced on electron bombardment of CS2 in solid para-hydrogen, Physical Chemistry Chemical Physics, 19(14), 9641-9653, 20170513
- Detection of Neutral Species in the MALDI Plume Using Femtosecond Laser Ionization: Quantitative Analysis of MALDI-MS Signals Based on a Semiequilibrium Proton Transfer Model, JOURNAL OF PHYSICAL CHEMISTRY A, 121(1), 31-39, 20161209
- Infrared spectra of two isomers of protonated carbonyl sulfide (HOCS+ and HSCO+) and t-HOCS in solid para-hydrogen, The Journal of Chemical Physics, 145(16), 164308-164308, 20161028
- Infrared spectra of ovalene (C32H14) and hydrogenated ovalene (C32H15˙) in solid para-hydrogen, Physical Chemistry Chemical Physics, 18(41), 28864-28871, 20160922
- Infrared absorption of t-HOCO+, H+(CO2)2, and HCO2− produced in electron bombardment of CO2 in solid para-H2, The Journal of Chemical Physics, 145(1), 014306-014306, 20160707
- THE INFRARED SPECTRUM OF PROTONATED OVALENE IN SOLID PARA-HYDROGEN AND ITS POSSIBLE CONTRIBUTION TO INTERSTELLAR UNIDENTIFIED INFRARED EMISSION, The Astrophysical Journal, 825(2), 96, 20160706
- Infrared Spectrum of Toluene: Comparison of Anharmonic Isolated-Molecule Calculations and Experiments in Liquid Phase and in a Ne Matrix, JOURNAL OF PHYSICAL CHEMISTRY A, 120(19), 3380-3389, 20160426
- Complex refractive index of secondary organic aerosol generated from isoprene/NOx photooxidation in the presence and absence of SO2, Journal of Geophysical Research, 120(15), 7777-7787, 20150715
- Experimental and theoretical study of the HXeI⋯HCl and HXeI⋯HCCH complexes, Journal of Chemical Physics, 142(14), 144306, 20150413
- Tunneling isomerization of small carboxylic acids and their complexes in solid matrixes: A computational insight, Journal of Physical Chemistry A, 119(11), 2628-2635, 20150301
- Near-infrared femtosecond laser ionization of the acetic acid dimer, Chemical Physics Letters, 624, 24-28, 20150211
- HXeI and HXeH in Ar, Kr, and Xe matrices: Experiment and simulation, Journal of Chemical Physics, 142(5), 54305, 20150204
- Infrared identification of proton-bound rare-gas dimers (XeHXe)+, (KrHKr)+, and (KrHXe)+ and their deuterated species in solid hydrogen, Journal of Physical Chemistry A, 119(11), 2651-2660, 2015
- Matrix-isolation and computational study of the HXeY⋯H2O complexes (Y = Cl, Br, and I), Journal of Chemical Physics, 140(4), 44323, 20140130
- Modeling of HXeBr in CO2 and Xe environments: Structure, energetics and vibrational spectra, Chemical Physics Letters, 594, 18-22, 20140122
- Matrix-Isolation FTIR Studies of Molecular Complexes, Bunko Kenkyu, 62(6), 268-275, 20131215
- Environmental effects on noble-gas hydrides: HXeBr, HXeCCH, and HXeH in noble-gas and molecular matrices, Journal of Chemical Physics, 139(20), 204303, 20131122
- Photochemistry of the ozone-water complex in cryogenic neon, argon, and krypton matrixes, Journal of Physical Chemistry A, 117(49), 13105-13111, 20131119
- Experimental and computational study of the HXe⋯IHY complexes (Y = Br and I), Journal of Chemical Physics, 138(10), 104314, 20130313
- Infrared characterization of the HCOOH•••CO 2 complexes in solid argon: Stabilization of the higher-energy conformer of formic acid, Journal of Physical Chemistry A, 116(22), 5305-5311, 20120507
- High kinetic stability of HXeBr upon interaction with carbon dioxide: HXeBr·CO 2 complex in a xenon matrix and HXeBr in a carbon dioxide matrix, Journal of Physical Chemistry A, 116(18), 4510-4517, 20120411
- Double ionization and coulomb explosion of the formic acid dimer by intense near-infrared femtosecond laser pulses, Journal of Physical Chemistry A, 116(2), 826-831, 2012
- Metastable decomposition and hydrogen migration of ethane dication produced in an intense femtosecond near-infrared laser field, Journal of Chemical Physics, 134(6), 64324, 20110214
- Effect of esterification on MALDI-MS detection sensitivity for amino acids, International Journal of Mass Spectrometry, 300(1), 39-43, 2011
- Investigation of protonation efficiency for amino acids in matrix-assisted laser desorption/ionization, Bulletin of the Chemical Society of Japan, 83(10), 1188-1192, 20101005
- Formation of H3O+ from ethanol clusters induced by intense femtosecond laser fields, Chemical Physics Letters, 489(4-6), 154-158, 20100303
- Formation of H3O+ from alcohols and ethers induced by intense laser fields, Rapid Communications in Mass Spectrometry, 24(5), 679-686, 20100212
- Infrared spectroscopy of ozone-water complex in a neon matrix, Journal of Physical Chemistry A, 111(18), 3540-3547, 20070419
- Jet spectroscopy of arylmethyl radicals in the visible region: Assignment of low-frequency vibrational modes in diphenylmethyl and chlorodiphenylmethyl radicals, Physical Chemistry Chemical Physics, 8(2), 256-263, 2006
Invited Lecture, Oral Presentation, Poster Presentation
- The first detection of sulfur atom behavior on the silicate surface, N. Sie; M. Tsuge; Y. Oba; N. Watanabe, Workshop on Interstellar Matter 2025, 2025/11/13, With Invitation
- Methanol formation via transient-diffusion-driven sequential reactions by methane deposition onto OH adsorbed amorphous solid water at low temperatures, H. Hidaka; A. Iguchi; A. Ishibashi; M. Tsuge; Y. Oba; N. Watanabe, Workshop on Interstellar Matter 2025, 2025/11/12, English
- The surface diffusion of nitrogen atoms on amorphous solid water at low temperatures, T. Endo; M. Tsuge; N. Watanab, Workshop on Interstellar Matter 2025, 2025/11/12, Without Invitation
- Probing O(3 P) behaviour on interstellar ice analogues using the PSD-REMPI method, C. Hobbs; N. Sie; M. Tsuge; I. Cooke; N.Watanabe, Workshop on Interstellar Matter 2025, 2025/11/12
- Methylamine formation by radical–radical reactions on diluted ice surface at 10 K, A. Iguchi; M. Tsuge; H. Hidaka; Y. Oba; N. Watanabe, Workshop on Interstellar Matter 2025, 2025/11/12, Without Invitation
- Methane formation via the sequential hydrogenation of carbon atoms on icy grains: A remarkable effect of adsorption states, M. Tsuge; G. Molpeceres; Y. Aikawa; N. Watanabe, nga-2024, 2024/11/15
- The photodesorption efficiency of OH radical on ice from ultraviolet to visible range, Ni-En Sie; Masashi Tsuge; Yoichi Nakai; Naoki Watanabe, Chemistry and Physics at Low Temperatures 2024, 2024/07/08
- The behavior of carbon atoms on water ice at low temperatures, Masashi Tsuge, Chemistry and Physics at Low Temperatures 2024, 2024/07/08, With Invitation
- Experimental investigations on the fate of carbon atoms on interstellar icy grains, Masashi Tsuge; Naoki Watanabe, 39th Symposium on Chemical Kinetics and Dynamics, 2024/06/12, Without Invitation
- Detection of free radicals on the surface of ice and its application to surface diffusion studies, Masashi Tsuge, Roadmap for astrochemical diffusion studies, 2024/04/10, With Invitation
- Experimental Investigations on the Behavior of Carbon Atoms on Amorphous Solid Water, Masashi Tsuge; Germán Molpeceres; Yuri Aikawa; Naoki Watanabe, Laboratory Astrophysics Workshop (ICE 2024), 2024/02/21, Without Invitation
- Wavelength-dependent photodesorption of OH radicals in a visible range, Ni-En Sie; Masashi Tsuge; Yoichi Nakai; W.M.C. Sameera; Naoki Watanabe, Laboratory Astrophysics Workshop (ICE 2024), 2024/02/21, Without Invitation
- The photodesorption of OH radical triggered by visible light, N.-E. Sie; M. Tsuge; Y. Nakai; W.M.C. Sameera; N. Watanabe, International Conference on Key Intermediates in Atmospheric Chemistry and Astrochemistry, 2024/01/23, Without Invitation
- Experimental investigations on the behavior of free radicals on the surface of icy grain analogues, Masashi Tsuge; Naoki Watanabe, International Conference on Key Intermediates in Atmospheric Chemistry and Astrochemistry, 2024/01/23, With Invitation
- Penetration of nonenergetic hydrogen atoms into amorphous solid water and their reactions with embedded molecules, Masashi Tsuge; Akira Kouchi; Naoki Watanabe, 2023 Kavli-IAU Astrochemistry Symposium, 2023/07/13, Without Invitation
- Nuclear spin conversion of H2 on surfaces of interstellar grain analogs: Amorphous solid water, amorphous silicate, and diamond-like carbon, Masashi Tsuge; Kenji Furuya; Akira Kouchi; Naoki Watanabe, 2023 Kavli-IAU Astrochemistry Symposium, 2023/07/13, Without Invitation
- Morphology of H2O, CO2 and CO ices on refractory grains based on experiments using transmission electron microscopy, Y. Kimura; M. Tsuge; Y. Oba; T. Yamazaki; H. Hidaka; N. Watanabe; A. Kouchi, 2023 Kavli-IAU Astrochemistry Symposium, 2023/07/11, Without Invitation
- Photodesorption of OH radicals adsorbed on ice surface in a visible region, SIE, Nien; TSUGE, Masashi; NAKAI, Yoichi; SAMEERA, W.M; WATANABE, Naoki, 38th Symposium on Chemical Kinetics and Dynamics, 2023/06/08
- Energy dissipation upon the ortho-to-para conversion of H2 on low temperature interstellar grain surfaces: Amorphous silicate, diamond-like carbon, and amorphous solid water, TSUGE, Masashi; KOUCHI, Akira; WATANABE, Naoki, 38th Symposium on Chemical Kinetics and Dynamics, 2023/06/08, Without Invitation
- Determination of the activation energy for diffusion of OH radicals on water ice, MIYAZAKI, Ayane; TSUGE, Masashi; HIDAKA, Hiroshi; NAKAI, Yoichi; WATANABE, Naoki, 38th Symposium on Chemical Kinetics and Dynamics, 2023/06/08
- Ortho-to-para Nuclear Spin Conversion of H2 on Bare Interstellar Dust Analogs: Amorphous-silicate, Diamond-like Carbon, and Graphite, Masashi Tsuge; Akira Kouchi; Naoki Watanabe, THE 22ND INTERNATIONAL VACUUM CONGRESS, 2022/09/14
- Experimental studies on the behavior of hydrogen on bare grain surfaces and within icy grains, Masashi Tsuge, Chemistry and Physics at Low Temperatures, 2022/07/04, published, TSUGE_2022-07-04-CPLT2022.pdf
- Energy dissipation process upon the nuclear-spin conversion of H2 on model interstellar grain surface, Masashi Tsuge; Akira Kouchi; Naoki Watanabe, Energy Dissipation at Interfaces: From Catalysis to Astrochemistry, 2022/05/16
- Icy grains are not spherical nor ellipsoidal, M. Tsuge; A. Kouchi; T. Hama; Y. Oba; S. Okuzumi; S.-i. Sirono; M. Momose; N. Nakatani; K. Furuya; T. Shimonishi; T. Yamazaki; H. Hidaka; Y. Kimura; K.-i. Murata; S. Tachibana; N. Watanabe, Workshop on Interstellar Matter 2021, 2021/11/18, With Invitation, published, ISM2021_Oral_Tsuge.pdf
- A new electrochemical property of ice: negative charge transport triggered by reactions of surface OH radicals with electrons, K. Kitajima; Y. Nakai; W. M. C. Sameera; M. Tsuge; A. Miyazaki; H. Hidaka; A. Kouchi; N. Watanabe, Workshop on Interstellar Matter 2021, 2021/11/17
- Detection of photodesorption OH radicals from H2O ice surface by visible light, Ayane Miyazaki; Naoki Watanabe; W. M. C. Sameera; Yoichi Nakai; Masashi Tsuge; Testuya Hama; Hiroshi Hidaka; Akira Kouchi, Workshop on Interstellar Matter 2021, 2021/11/17
- Ortho-to-para nuclear spin conversion of H2 on interstellar bare grain analogues, M. Tsuge; T. Namiyoshi; K. Furuya; A. Kouchi; N. Watanabe, Workshop on Interstellar Matter 2021, 2021/11/17, published, 41.Tsuge.pdf
- Diffusive hydrogenation of CO embedded in amorphous solid water at temperature up to 70 K, M. Tsuge; H. Hidaka; A. Kouchi; N. Watanabe, Workshop on Interstellar Matter 2021, 2021/11/17, Without Invitation, published, 40.Tsuge.pdf
- Experimental studies on the behavior of hydrogen on bare grain surfaces, Masashi Tsuge, Astrochemical Frontiers 2021, 2021/07/05, published, TSUGE_2021-07-05-AstronomicalFrontiers.pdf
- Infrared spectroscopy of protonated carbon monoxide dimer H+(CO)2, Masashi Tsuge, Asian Workshop on Molecular Spectroscopy 2021, 2021/03/09, With Invitation
- ELECTRONIC AND VIBRATIONAL STRUCTURE OF BUCKY BOWL, Masaaki Baba; Ayumi Kanaoka; Masatoshi Misono; Hidehiro Sakurai; Masashi Tsuge; Pavithraa Sundararajan; Yuan-Pern Lee, International Symposium on Molecular Spectroscopy, 2019/06/19
- H2 formation on a low-temperature diamondlike carbon surface, Masashi Tsuge; Tetsuya Hama; Yuki Kimura; Akira Kouchi; Naoki Watanabe, 35st Symposium on Chemical Kinetics and Dynamics, 2019/06/05
External Funds
Acceptance Results of Competitive Funds
- 2024/04/01, 2027/03/31
- 2022/04/01, 2027/03/31
- 2024/10, 2025/09
- Grant-in-Aid for Transformative Research Areas (A), Next Generation Astrochemistry: Reconstruction of the Science Based on Fundamental Molecular Processes, 2023/04, 2025/03
- 2023/10, 2024/09
- 2021/04, 2024/03
- Grants-in-Aid for Scientific Research, Diffusion of hydrogen atoms in astronomical ice grains, 2018/04, 2021/03
- Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Investigation of dressed-state formation mechanism by spectroscopic measurements, 2008/04, 2011/03
Social Activities
Organizing Academic Conferences, etc.
- 2023/11, 2023/11