Sohei Okada

Reflection High Energy Positron Diffraction from a Si(111) Surface

A. Kawasuso, Sohei Okada · Physical Review Letters · 1998 · 92 citations

Natural Sciences, Materials Science, Physics +13

Annealing processes of vacancy-type defects in electron-irradiated and as-grown 6<i>H</i>-SiC studied by positron lifetime spectroscopy

A. Kawasuso, Hisayoshi Itoh, Sohei Okada et al. · Journal of Applied Physics · 1996 · 76 citations · Full text

Natural Sciences, Materials Engineering, Materials Science +17

Positron annihilation and ESR study of irradiation-induced defects in silica glass

Masayuki Hasegawa, M. Tabata, Masanori Fujinami et al. · Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · 1996 · 27 citations

Natural Sciences, Materials Engineering, Materials Science +14

The Number of Rhombus Tilings of a “Punctured” Hexagon and the Minor Summation Formula

Sohei Okada, Christian Krattenthaler · Advances in Applied Mathematics · 1998 · 27 citations

Natural Sciences, Mathematics, Combinatorics +6

Vacancy production by 3 MeV electron irradiation in 6H-SiC studied by positron lifetime spectroscopy

A. Kawasuso, Hisayoshi Itoh, Takeshi Ohshima et al. · Journal of Applied Physics · 1997 · 23 citations

Engineering, Materials Engineering, Materials Science +16