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Motivated by the huge need of data for non-equilibrium plasma modeling, a theoretical investigation of dissociative electron attachment to the NO molecule is performed. The calculations presented here are based on the…

Atomic Physics · Physics 2020-12-02 V. Laporta , I. F. Schneider , J. Tennyson

Momentum imaging measurements from two experiments are presented and interpreted with the aid of new ab initio theoretical calculations to describe the dissociative electron attachment (DEA) dynamics. We address the problem of how the 4 eV…

Static correlation error(SCE) inevitably emerges when a dissociation of a covalent bond is described with a conventional denstiy-functional theory (DFT) for electrons. SCE gives rise to a serious overshoot in the potential energy at the…

Computational Physics · Physics 2020-08-10 Hideaki Takahashi

Dissociative electron attachment (DEA) shows functional group-dependent site selectivity in the $H^-$ ion channel. In this context, the thiol functional group has yet to be studied in great detail, although this functional group carries…

Chemical Physics · Physics 2024-04-17 Sukanta Das , Vaibhav S. Prabhudesai

Dissociative electron attachment (DEA) to the HNC$_3$ is modeled theoretically using a first-principles approach. In HNC$_3$+$e^-$ collisions, there is a low-energy resonance, which has a repulsive character along the H+NC$_3$ coordinate…

Using the velocity map imaging technique, we studied and characterized the process of Dissociative Electron Attachment (DEA) in polyatomic molecules like Water, Hydrogen Sulphide, Ammonia, Methane, Formic Acid and Propyl Amine. We present…

Chemical Physics · Physics 2010-07-30 N. Bhargava Ram , V. S. Prabhudesai , E. Krishnakumar

Dissociative electron attachment (DEA) to gas-phase carbonyl sulfide (OCS) has been studied diligently using the time-of-flight (TOF) based state-of-the-art velocity map imaging (VMI) technique. Three well-resolved DEA resonances are…

Atomic Physics · Physics 2022-02-24 Narayan Kundu , Vikrant Kumar , Tejas Jani , Minaxi Vinodkumar , Dhananjay Nandi

Kinetic energy and angular distributions of O$^-$ ions formed by dissociative electron attachment to CO molecule have been studied for 9, 9.5, 10, 10.5, 11, 11.5 eV incident electron energies around the resonance using time sliced velocity…

Atomic and Molecular Clusters · Physics 2015-02-10 Pamir Nag , Dhananjay Nandi

By means of first-principles density-functional theory (DFT) calculations, we perform a comparative analysis of the electronic and magnetic properties of transition metal-doped TiO$_2$. The electronic band gaps of Ti$_x$M$_{1-x}$O$_2$,…

Materials Science · Physics 2026-01-26 Vikash Mishra , Shashi Pandey , Swaroop Ganguly , Alok Shukla

We present a kinematically complete study of dissociative electron attachment (DEA) in linear OCS molecules, focusing on how electrons resonantly attach and trigger dissociation. Near the Franck-Condon regime, DEA is dominated by molecular…

Atomic and Molecular Clusters · Physics 2025-05-02 Narayan Kundu , Meenakshi Rana , Aryya Ghosh , Dhananjay Nandi

We introduced a new electron density n({\epsilon}) by projecting the spatial electron density n(r) onto the energy coordinate {\epsilon} defined with the external potential \upsion (r) of interest. Then, a density functional theory (DFT)…

Chemical Physics · Physics 2018-02-20 Hideaki Takahashi

Dissociative electron attachment (DEA) is one of the processes that shows a strong coupling between the nuclear and electronic degrees of freedom in a molecule. This coupling results in an efficient transformation of the kinetic energy of…

Chemical Physics · Physics 2024-04-17 Suvasis Swain , Akshay Kumar , E. Krishnakumar , Vaibhav S. Prabhudesai

State-by-state cross sections for dissociative electron attachment and electron-impact dissociation for molecular oxygen are computed using ab initio resonance curves calculated with the R-matrix method. When O2 is in its vibrational ground…

Plasma Physics · Physics 2015-01-09 V. Laporta , R. Celiberto , J. Tennyson

The treatment of atomic anions with Kohn-Sham density functional theory (DFT) has long been controversial since the highest occupied molecular orbital (HOMO) energy, $E_{HOMO}$, is often calculated to be positive with most approximate…

Chemical Physics · Physics 2019-03-20 Lindsey N. Anderson , M. Belén Oviedo , Bryan M. Wong

In this study, we examine the interactions of low- to intermediate-energy electrons (0$-$45 eV) with carbonyl sulfide (OCS). These collisions lead to the formation of several anionic fragments, including C$^-$, O$^-$, S$^-$, and SO$^-$.…

Atomic and Molecular Clusters · Physics 2025-12-18 Soumya Ghosh , Narayan Kundu , Aryya Ghosh , Dhananjay Nandi

Low energy electron attachment to mixed (H$_2$)$_x$/(O$_2$)$_y$ clusters and their deuterated analogues has been investigated for the first time. These experiments were carried out using liquid helium nanodroplets to form the clusters, and…

Atomic and Molecular Clusters · Physics 2018-05-03 Michael Renzler , Lorenz Kranabetter , Erik Barwa , Lukas Grubwieser , Paul Scheier , Andrew M. Ellis

Complete dissociation dynamics of low-energy electron attachment to carbon disulfide have been studied using the velocity slice imaging (VSI) technique. The ion yields of S- and CS- fragment ions as the function of incident electron energy…

Atomic and Molecular Clusters · Physics 2022-09-28 Anirban Paul , Dhananjay Nandi

The exact formulation of multi-configuration density-functional theory (DFT) is discussed in this work. As an alternative to range-separated methods, where electron correlation effects are split in the coordinate space, the combination of…

Chemical Physics · Physics 2015-02-26 Emmanuel Fromager

Distortions of the oxygen octahedra influence the fundamental electronic structure of perovskite oxides, such as their bandwidth and exchange interactions. Utilizing a fully ab-initio methodology based on density functional theory plus…

Strongly Correlated Electrons · Physics 2021-07-02 Alexander Hampel , Jeremy Lee-Hand , Antoine Georges , Cyrus E. Dreyer

The Ni(CO)4, Cr(CO)6, Co(CO)3NO are some of the most common precursors used for the focused electron-induced deposition. Some of the compounds, even though extensively used have high requirements when it comes to handling, being explosives,…

Materials Science · Physics 2022-01-27 Maria Pintea , Nigel Mason , Maria Tudorovskaya
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