36 citations · 184 across the 9 of their papers we have counts for
9 papers
Surface Diffusion of Carbon Atoms as a Driver of Interstellar Organic Chemistry
Masashi Tsuge, Germán Molpeceres, Yuri Aikawa +1
Many interstellar complex organic molecules (COMs) are believed to be produced on the surfaces of icy grains at low temperatures. Atomic carbon is considered responsible for the sk…
Direct Determination of the Activation Energy for Diffusion of OH Radicals on Water Ice
A. Miyazaki, M. Tsuge, H. Hidaka +2
Using a combination of photostimulated desorption and resonance-enhanced multiphoton ionization methods, the behaviors of OH radicals on the surface of interstellar ice analog was…
Penetration of Non-energetic Hydrogen Atoms into Amorphous Solid Water and their Reaction with Embedded Benzene and Naphthalene
Masashi Tsuge, Akira Kouchi, Naoki Watanabe
Chemical processes on the surface of icy grains play an important role in the chemical evolution in molecular clouds. In particular, reactions involving non-energetic hydrogen atom…
Measurements of Ortho-to-para Nuclear Spin Conversion of H2 on Low-temperature Carbonaceous Grain Analogues: Diamond-like Carbon and Graphite
Masashi Tsuge, Akira Kouchi, Naoki Watanabe
Hydrogen molecules have two nuclear spin isomers: ortho-H2 and para-H2. The ortho-to-para ratio (OPR) is known to affect chemical evolution as well as gas dynamics in space. Theref…
Transmission Electron Microscopy Study of the Morphology of Ices Composed of H2O, CO2, and CO on Refractory Grains
Akira Kouchi, Masashi Tsuge, Tetsuya Hama +15
It has been implicitly assumed that ices on grains in molecular clouds and proto planetary disks are formed by homogeneous layers regardless of their composition or crystallinity.…
Behavior of Hydroxyl Radicals on Water Ice at Low Temperatures
Masashi Tsuge, Naoki Watanabe
Because chemical reactions on/in cosmic ice dust grains covered by amorphous solid water (ASW) play important roles in generating a variety of molecules, many experimental and theo…
Rapid ortho-to-para nuclear spin conversion of H2 on a silicate dust surface
Masashi Tsuge, Toshinobu Namiyoshi, Kenji Furuya +3
The H2 molecule has two nuclear spin isomers, the so-called ortho and para isomers. Nuclear spin conversion (NSC) between these states is forbidden in the gas phase. The energy dif…
Diffusive hydrogenation reactions of CO embedded in amorphous solid water at elevated temperatures ~70 K
Masashi Tsuge, Hiroshi Hidaka, Akira Kouchi +1
The surface processes on interstellar dust grains have an important role in the chemical evolution in molecular clouds. Hydrogenation reactions on ice surfaces have been extensivel…
Interactions of Atomic and Molecular Hydrogen with a Diamond-like Carbon Surface: H2 Formation and Desorption
Masashi Tsuge, Tetsuya Hama, Yuki Kimura +2
The interactions of atomic and molecular hydrogen with bare interstellar dust grain surfaces are important for understanding H2 formation at relatively high temperatures (>20 K). W…