Recent advances in quantum theory on ro-vibrationally inelastic scattering

D Yang, H Guo, D Xie - Physical Chemistry Chemical Physics, 2023 - pubs.rsc.org
Molecular collisions are of fundamental importance in understanding intermolecular
interaction and dynamics. Its importance is accentuated in cold and ultra-cold collisions …

Full-dimensional quantum studies of vibrational energy transfer dynamics between H 2 O and Ar: theory assessing experiment

D Yang, L Liu, D Xie, H Guo - Physical Chemistry Chemical Physics, 2022 - pubs.rsc.org
We report the first full-dimensional quantum mechanical calculations of the ro-vibrational
inelastic scattering dynamics between water molecules and argon atoms on an accurate …

Adiabatic Trajectory Approximation: A New General Method in the Toolbox of Mixed Quantum/Classical Theory for Collisional Energy Transfer

B Mandal, C Joy, D Bostan, A Eng… - The Journal of Physical …, 2023 - ACS Publications
A new version of the MQCT program is presented, which includes an important addition,
adiabatic trajectory approximation (AT-MQCT), in which the equations of motion for the …

Rate coefficients for rotational state-to-state transitions in H2O+ H2O collisions for cometary and planetary applications, as predicted by mixed quantum-classical …

B Mandal, D Babikov - Astronomy & Astrophysics, 2023 - aanda.org
Aims. We present new calculations of collision cross sections for state-to-state transitions
between the rotational states in an H 2 O+ H 2 O system, which are used to generate a new …

Full-Dimensional Quantum Dynamics Studies of Ro-vibrationally Inelastic Scattering of H2O with Ar: A Benchmark Test of the Rigid-Rotor Approximation

L Liu, D Yang, H Guo, D Xie - The Journal of Physical Chemistry A, 2022 - ACS Publications
While the rigid-rotor (RR) approximation is usually considered to be accurate for describing
pure rotationally inelastic scattering involving diatoms in their ground or low-lying vibrational …

[HTML][HTML] Energy transfer between vibrationally excited carbon monoxide based on a highly accurate six-dimensional potential energy surface

J Chen, J Li, JM Bowman, H Guo - The Journal of Chemical Physics, 2020 - pubs.aip.org
Energy transfer between vibrational modes can be quite facile, and it has been proposed as
the dominant mechanism for energy pooling in extreme environments such as nonthermal …

Mixed Quantum/Classical Theory for Collisional Quenching of PAHs in the Interstellar Media

B Mandal, C Joy, A Semenov… - ACS Earth and Space …, 2022 - ACS Publications
A computationally affordable methodology is developed to predict cross sections and rate
coefficients for collisional quenching and excitation of large molecules in space, such as …

Energy exchange rate coefficients from vibrational inelastic O2 (Σg− 3)+ O2 (Σg− 3) collisions on a new spin-averaged potential energy surface

Q Hong, Q Sun, F Pirani… - The Journal of …, 2021 - pubs.aip.org
A new spin-averaged potential energy surface (PES) for non-reactive O 2 (⁠ Σ g− 3⁠)+ O 2
(⁠ Σ g− 3⁠) collisions is presented. The potential is formulated analytically according to the …

Spectroscopy and scattering studies using interpolated ab initio potentials

E Quintas-Sánchez, R Dawes - Annual Review of Physical …, 2021 - annualreviews.org
The Born–Oppenheimer potential energy surface (PES) has come a long way since its
introduction in the 1920s, both conceptually and in predictive power for practical …

Mixed quantum/classical calculations of rotationally inelastic scattering in the CO+ CO system: a comparison with fully quantum results

D Bostan, B Mandal, C Joy, M Żółtowski… - Physical Chemistry …, 2024 - pubs.rsc.org
An updated version of the CO+ CO potential energy surface from [R. Dawes, XG Wang and
T. Carrington, J. Phys. Chem. A 2013, 117, 7612] is presented, that incorporates an …