The TDDVR approach for molecular photoexcitation, molecule–surface and triatomic reactive scattering processes

S Mandal, S Ghosh, S Sardar… - International Reviews in …, 2018 - Taylor & Francis
ABSTRACT The Time Dependent Discrete Variable Representation (TDDVR) method was
initiated by Adhikari and Billing considering time dependent Gauss-Hermite basis functions …

A beyond Born–Oppenheimer treatment of C6H6+ radical cation for diabatic surfaces: Photoelectron spectra of its neutral analog using time-dependent discrete …

S Mukherjee, S Ravi, K Naskar, S Sardar… - The Journal of …, 2021 - pubs.aip.org
We employ theoretically “exact” and numerically “accurate” Beyond Born–Oppenheimer
(BBO) treatment to construct diabatic potential energy surfaces (PESs) of the benzene …

Beyond Born–Oppenheimer based diabatic surfaces of 1, 3, 5-C 6 H 3 F 3+ to generate the photoelectron spectra using time-dependent discrete variable …

S Mukherjee, S Ravi, J Dutta, S Sardar… - Physical Chemistry …, 2022 - pubs.rsc.org
In this article, Beyond Born–Oppenheimer (BBO) treatment is implemented to construct
diabatic potential energy surfaces (PESs) of 1, 3, 5-C6H3F3+ over a series [eighteen (18)] of …

Jahn–Teller Effect in Orthorhombic Manganites: Ab Initio Hamiltonian and Roto-vibrational Spectrum

J Dutta, S Ravi, S Mukherjee, AK Ojha… - The Journal of …, 2022 - ACS Publications
For the first time, using three different electronic structure methodologies, namely, CASSCF,
RS2c, and MRCI (SD), we construct ab initio adiabatic potential energy surfaces (APESs) …

The Jahn–Teller and pseudo-Jahn–Teller effects in the propyne radical cation

AK Kanakati, VJ Rani, S Mahapatra - Physical Chemistry Chemical …, 2022 - pubs.rsc.org
The Jahn–Teller (JT) and pseudo-Jahn–Teller (PJT) effects in the 2E, Ã2E and 2A1
electronic states of the propyne radical cation are investigated with the aid of ab initio …

Multi-state multi-mode nuclear dynamics on three isomers of C 6 H 4 F+ 2 using parallelized TDDVR approach

S Sardar, P Puzari, S Adhikari - Physical Chemistry Chemical Physics, 2011 - pubs.rsc.org
We have performed molecular dynamics on the three isomers of the difluorobenzene radical
cation (C6H4F+ 2) after excitation from the ground state to a specific higher electronically …

A “classical” trajectory driven nuclear dynamics by a parallelized quantum‐classical approach to a realistic model Hamiltonian of benzene radical cation

S Sardar, AK Paul, R Sharma… - International Journal of …, 2011 - Wiley Online Library
We explore the workability of a parallelized algorithm of time‐dependent discrete variable
representation (TDDVR) methodology formulated by involving “classical” trajectories on …

Effect of Surface Modes on the Six-Dimensional Molecule–Surface Scattering Dynamics of H2–Cu(100) and D2–Cu(111) Systems

T Sahoo, S Sardar, P Mondal, B Sarkar… - The Journal of …, 2011 - ACS Publications
We include the phonon modes originating from the three layers of Cu (100)/Cu (111) surface
atoms on the dynamics of molecular [H2 (v, j)/D2 (v, j)] degrees of freedom (DOFs) through a …

The effect of phonon modes on the H 2 (v, j)/D 2 (v, j)–Cu (1nn) scattering processes

T Sahoo, S Sardar, S Adhikari - Physical Chemistry Chemical Physics, 2011 - pubs.rsc.org
We include the effect of the phonon modes originating from the three layers of Cu (1nn)
surface atoms on the dynamics of incoming molecular [H2 (v, j)/D2 (v, j)] degrees of freedom …

Surface temperature effect on the scattering of D2 (v= 0, j= 0)-Cu (111) system

T Sahoo, S Mukherjee, S Adhikari - The Journal of Chemical Physics, 2012 - pubs.aip.org
We perform four-dimensional (4D⊗ 2D) as well as six-dimensional (6D) quantum dynamics
on a parametrically time-and temperature-dependent effective Hamiltonian for D 2 (v, j)-Cu …