Negative Ions Observed in Electron Transmission and Electron Attachment Spectroscopy

1992 ◽  
pp. 299-310
Author(s):  
Eugen Illenberger ◽  
Jacques Momigny
Keyword(s):  
Electron Attachment ◽  
Negative Ions ◽  
Electron Transmission

Fragmentation of chlorpyrifos by thermal electron attachment: a likely relation to its metabolism and toxicity

2018 ◽  
Vol 20 (34) ◽  
pp. 22272-22283 ◽  
Author(s):  
Stanislav A. Pshenichnyuk ◽  
Alberto Modelli ◽  
Alexander S. Vorob’ev ◽  
Nail L. Asfandiarov ◽  
Ekaterina P. Nafikova ◽  
...  
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Electron Attachment ◽  
Negative Ions ◽  
Organophosphorus Insecticide ◽  
Dissociative Electron Attachment ◽  
Thermal Electron ◽  
Electron Transmission

The energies of formation and dissociative decays of temporary negative ions of the organophosphorus insecticide chlorpyrifos are studied using electron transmission, dissociative electron attachment spectroscopies and quantum-chemical calculations.

Numerical Simulation of Leakage Current on Conductive Insulator Surface

2019 ◽  
Vol 8 (4) ◽  
pp. 9487-9492
Keyword(s):  
Numerical Simulation ◽  
Electric Field ◽  
Leakage Current ◽  
Method Of Lines ◽  
Electron Attachment ◽  
Negative Ions ◽  
Conduction Current ◽  
Insulator Surface ◽  
Finite Difference Approximations ◽  
Positive Ions

The outdoor insulator is commonly exposed to environmental pollution. The presence of water like raindrops and dew on the contaminant surface can lead to surface degradation due to leakage current. However, the physical process of this phenomenon is not well understood. Hence, in this study we develop a mathematical model of leakage current on the outdoor insulator surface using the Nernst Planck theory which accounts for the charge transport between the electrodes (negative and positive electrode) and charge generation mechanism. Meanwhile the electric field obeys Poisson’s equation. Method of Lines technique is used to solve the model numerically in which it converts the PDE into a system of ODEs by Finite Difference Approximations. The numerical simulation compares reasonably well with the experimental conduction current. The findings from the simulation shows that the conduction current is affected by the electric field distribution and charge concentration. The rise of the conduction current is due to the distribution of positive ion while the dominancy of electron attachment with neutral molecule and recombination with positive ions has caused a significant reduction of electron and increment of negative ions.

UV-Photoelectron, Electron Transmission, and Dissociative Electron Attachment Spectroscopies of Acetone Oximes

1998 ◽  
Vol 102 (41) ◽  
pp. 8037-8043 ◽  
Author(s):  
Dal Colle ◽  
Giuseppe Distefano ◽  
Alberto Modelli ◽  
Derek Jones ◽  
Maurizio Guerra ◽  
...  
Keyword(s):  
Electron Attachment ◽  
Dissociative Electron Attachment ◽  
Electron Transmission

Calculation of the vertical electron attachment energy of carbon dioxide: Continuum states for negative ions

1976 ◽  
Vol 39 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Pablo J. Bruna ◽  
Sigrid D. Peyerimhoff ◽  
Robert J. Buenker
Keyword(s):  
Carbon Dioxide ◽  
Electron Attachment ◽  
Negative Ions ◽  
Continuum States ◽  
Attachment Energy

Continuum Modeling of Charged Particle Transport: RF Breakdown and Discharges of SF6

1986 ◽  
Vol 68 ◽  
Author(s):  
Brian E. Thompson ◽  
Herbert H. Sawun ◽  
Aaron Owens
Keyword(s):  
Electric Fields ◽  
Electron Attachment ◽  
Negative Ions ◽  
Rate Coefficients ◽  
Rf Discharge ◽  
Continuity Equations ◽  
Positive Ions ◽  
Discharge Model ◽  
Rf Breakdown ◽  
Charged Particle Transport

AbstractContinuity equations for the concentration of electrons, positive ions, and negative ions were constructed and solved to predict rf breakdown voltages and the electrical properties of SF, discharges.These balances for the three types of charged species include terms for convection (electric field-driven fluxes), diffusion, and reactions (ionization, electron attachment, and negative-positive ion recombination).The mobilities, diffusivities, and reaction rate coefficients necessary for the rf discharge model are based on reported measurements and calculations of these parameters in dc electric fields.The electric fields developed in the rf discharge are calculated from Poisson's equation and applied voltage conditions.Predictions based on this model are compared with measured rf breakdown characteristics of SF6.

On the structure of negative ions formed by dissociative electron attachment by monochlorophenol molecules

2003 ◽  
Vol 52 (9) ◽  
pp. 1974-1981 ◽  
Author(s):  
R. V. Khatymov ◽  
M. V. Muftakhov ◽  
P. V. Schukin ◽  
V. A. Mazunov
Keyword(s):  
Electron Attachment ◽  
Negative Ions ◽  
Dissociative Electron Attachment
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