Structure and dynamics of electronically excited molecular systems

S Mahapatra - Wiley Interdisciplinary Reviews: Computational …, 2022 - Wiley Online Library
Abstract Structure and dynamics of electronic excited states of molecular systems is of
contemporary interest to understand a rich variety of processes ranging from molecular …

Vibronic coupling in the ground and excited states of the imidazole radical cation

AB Trofimov, AD Skitnevskaya… - The Journal of …, 2022 - pubs.aip.org
Vibronic interactions in the ground and two excited states of the imidazole radical cation, X 2
A ″(π− 1), A 2 A′(nσ− 1), and B 2 A ″(π− 1), and the associated nuclear dynamics were …

Variational squeezed Davydov Ansatz for realistic chemical systems with nonlinear vibronic coupling

J Zeng, Y Yao - Journal of Chemical Theory and Computation, 2022 - ACS Publications
Chemical systems normally possess strong nonlinear vibronic couplings at both zero and
finite temperature. For the lowest-order quadratic couplings, here, we introduce a squeezing …

Vibronic coupling in the ground and excited states of the pyridine radical cation

AB Trofimov, AD Skitnevskaya… - The Journal of …, 2020 - pubs.aip.org
Vibronic interactions in the pyridine radical cation ground state, 2 A 1, and its lowest excited
states, 2 A 2 and 2 B 1, are studied theoretically. These states originate from the ionization …

Jahn–Teller and pseudo-Jahn–Teller effects on the vibronic structure of the photoionized spectrum of cyanopropyne

K Rajak, AK Tiwari - The Journal of Chemical Physics, 2024 - pubs.aip.org
Nonadiabatic quantum dynamics are carried out to illustrate the photoionized spectrum of
the cyanopropyne (CH 3–C≡ C–C≡ N) as reported in recent experimental measurements …

Observation of Renner–Teller and predissociation coupled vibronic intensity borrowing in dissociative electron attachment to OCS

N Kundu, D Nandi - The Journal of Chemical Physics, 2024 - pubs.aip.org
We use a time-of-flight-based velocity map imaging method to look into the dissociative
electron attachment to a linear OCS molecule at electron beam energies ranging from 4.5 to …

Photoionization of aziridine: Nonadiabatic dynamics of the first six low-lying electronic states of the aziridine radical cation

VJ Rani, AK Kanakati, S Mahapatra - The Journal of Chemical Physics, 2024 - pubs.aip.org
In this article, the theoretical photoionization spectroscopy of the aziridine (C 2 H 5 N)
molecule is investigated. To start with, we have optimized the geometry of this molecule at …

[HTML][HTML] Vibronic interaction in trans-dichloroethene studied by vibration-and angle-resolved photoelectron spectroscopy using 19–90 eV photon energy

AT Duran, I Powis, DMP Holland, C Nicolas… - The Journal of …, 2021 - pubs.aip.org
Valence photoelectron spectra and photoelectron angular distributions of trans-
dichloroethene have been measured with vibrational resolution at photon energies between …

Electronic spectroscopy of carbon chains (C2n+ 1, n= 7–10) of astrophysical importance. I. Quantum chemistry

SR Reddy, A Ghosh, S Mahapatra - The Journal of Chemical Physics, 2019 - pubs.aip.org
Carbon chains have been predicted to be potential carriers of diffuse interstellar band
features in astrophysical observations. Motivated by numerous predictions, we set out to …

[PDF][PDF] Electron-impact Resonant and Quasi-resonant Charge Transfer Dissociation in Search of Beyond Dipole Transitions

N Kundu - 2024 - researchgate.net
This thesis investigates electron-impact resonant charge transfer dissociation at low beam
energies (0–15 eV), focusing on dissociative electron attachment (DEA) of triatomic OCS …