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Complete dissociation dynamics of low energy electron attachment to ammonia molecule has been studied using velocity slice imaging (VSI) spectrometer. One low energy resonant peak around 5.5 eV and a broad resonance around 10.5 eV incident…

Atomic and Molecular Clusters · Physics 2019-09-11 Dipayan Chakraborty , Aranya Giri , Dhananjay Nandi

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

We report experimental results on three-dimensional momentum imaging measurements of anions generated via dissociative electron attachment to gaseous formamide. From the momentum images, we analyze the angular and kinetic energy…

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

In this paper, we discuss the dissociative electron attachment process in Ammonia. Kinetic energy and angular distributions of H^{-} and NH_{2}^{-} fragment anions across the two well known resonances at 5.5 eV and 10.5 eV are reported. The…

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

In the present study, dissociative electron attachment (DEA) measurements with gas phase HMX, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine, $C_4H_8N_8O_8$, have been performed by means of a crossed electron-molecular beam experiment.…

We present experimental results for dissociative electron attachment to acetylene near the 3 eV $^2\Pi_g$ resonance. In particular, we use an ion-momentum imaging technique to investigate the dissociation channel leading to C$_2$H$^-$…

Chemical Physics · Physics 2014-10-29 M. Fogle , D. J. Haxton , A. L. Landers , A. E. Orel , T. N. Rescigno

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…

We report measurements of resonant low-energy electron attachment to O\(_2\) molecular impurities in neon gas in the temperature range \(46.5\,\mbox{K}\le T\le 101\,\mbox{K}\). The reduced attachment frequency \(\nu_A/N\) shows a well…

Plasma Physics · Physics 2020-04-22 A. F. Borghesani

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

We report novel total electron scattering cross sections (TCS) from nitric oxide (NO) in the impact energy range from 1 to 15 eV by using a magnetically confined electron transmission apparatus. The accuracy of the data to within 5% and its…

Chemical Physics · Physics 2025-05-09 Ana I. Lozano , Juan C. Oller , Paulo Limão-Vieira , Gustavo García

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

The fragmentation of 1-propanol resulting from dissociative electron attachment has been explored across an energy range of 3.5 to 16 eV. Four distinct ion species are identified: $\text{H}^{-}$, $\text{O}^{-}$, $\text{OH}^{-}$, and…

Atomic and Molecular Clusters · Physics 2026-02-06 Soumya Ghosh , Dipayan Chakraborty , Anirban Paul , Dhananjay Nandi

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

The collision-energy resolved rate coefficient for dissociative recombination of HD+ ions in the vibrational ground state is measured using the photocathode electron target at the heavy-ion storage ring TSR. Rydberg resonances associated…

Dissociative electron attachment (DEA) is an important tool for investigating negative ion resonances. We have studied the negative ion resonances of H2 at 10 eV and 14 eV using the improved velocity slice imaging technique. We obtained…

Stereo-dynamics of dissociative electron attachments to CO_2 is investigated by the O^- anion velocity imaging experiments combined with the R-matrix calculations. ^2{\Pi}_g as a Feshbach resonant state of CO_2^- is confirmed to play roles…

Chemical Physics · Physics 2011-10-31 Bin Wu , Lei Xia , Yong-Feng Wang , Hong-Kai Li , Xian-Jin Zeng , Shan Xi Tian

The dipolar dissociation of molecular oxygen due to 21-35 eV energy electron collision has been studied using the time sliced velocity map imaging technique. A rough estimation about the threshold of the process and the kinetic energy and…

Atomic and Molecular Clusters · Physics 2016-08-31 Pamir Nag , Dhananjay Nandi

We experimentally probe electron collisions with HC$_3$N in the energy range from 0 to 10 eV with the focus on vibrational excitation and dissociative electron attachment. The vibrational excitation cross sections show a number of…

Chemical Physics · Physics 2018-12-04 M. Ranković , P. Nag , M. Zawadzki , L. Ballauf , J. Žabka , M. Polášek , J. Kočišek , J. Fedor

We reported an imaging study of the dissociation dynamics of temporary negative ion N2O- formed in the low-energy electron attachment, e- + N2O -> N2O- -> N2 + O-. With the help of ab initio molecular dynamics calculations, the evolution of…

Chemical Physics · Physics 2015-06-11 Lei Xia , Bin Wu , Hong-Kai Li , Xian-Jin Zeng , Shan Xi Tian
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