Keisaku Ishii

An ab initio prediction of the spectroscopic constants of MgNC - The first Mg-bearing molecule in space

Keisaku Ishii, Tsuneo Hirano, Umpei Nagashima et al. · The Astrophysical Journal · 1993 · 56 citations

Potential energy surfaces and branching ratio of the dissociative recombination reaction HCNH++e−: An<i>ab initio</i>molecular orbital study

Yoko Shiba, Tsuneo Hirano, Umpei Nagashima et al. · The Journal of Chemical Physics · 1998 · 49 citations

Ab Initio Direct Trajectory Simulation with Nonadiabatic Transitions of the Dissociative Recombination Reaction HCNH⁺+<i>e</i>⁻→ HNC/HCN + H

Tetsuya Taketsugu, Asami Tajima, Keisaku Ishii et al. · The Astrophysical Journal · 2004 · 39 citations · Full text

Chemical Kinetics, Engineering, Nonadiabatic Transitions +21

Theoretical Elucidation of the Unusually High [HNC]/[HCN] Abundance Ratio in Interstellar Space: Two‐dimensional and Two‐State Quantum Wave Packet Dynamics Study on the Branching Ratio of the Dissociative Recombination Reaction HCNH⁺+<i>e</i>⁻→ HNC/HCN + H

Keisaku Ishii, Asami Tajima, Tetsuya Taketsugu et al. · The Astrophysical Journal · 2006 · 28 citations · Full text

Engineering, Adiabatic Pess, Computational Chemistry +18

Ab initio study on low-lying vibrational states and spectroscopic constants of MgNC (X 2Σ+)

Keisaku Ishii, Tsuneo Hirano, Umpei Nagashima et al. · Journal of Molecular Structure THEOCHEM · 1994 · 25 citations

X 2σ+, Engineering, Physics +11