Double Differential Cross-Sections for Electron Impact Ionization of Atoms and Molecules

Doğan, Mevlüt; Ulu, Melike; Ozer, Zehra Nur; Yavuz, Metin; Bozkurt, G.

doi:10.1155/2013/192917

Cited by 19 publications

(10 citation statements)

References 124 publications

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“…This result is in agreement with the expectations from a two body collision and the predictions from the binary encounter theory which attributes this forward peak to electron exchange [19,20]. Similar structures conrming these results were also obtained in our previous paper [21] As shown in the gures, the angular position of the binary peak changes from 50…”

Section: Resultssupporting

confidence: 92%

Double Differential Cross-Section Measurements for Methane Molecule at 350 eV

et al. 2014

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Double dierential cross-sections have been measured after ionizing electron collisions with methane at primary energy of 350 eV using a conventional electron spectrometer. An electrostatic analyzer was used to measure angular distributions of secondary electrons with energies between 25 eV and 300 eV. Angles of emission were 25• to 130• . It was found that the outgoing electrons belong to one of the two energetically separated groups, either the fast electrons which are scattered mainly in forward direction or the slow electrons which are distributed isotropically into all angles. For higher ejection energies the maxima shifted towards smaller angles as expected from binary type collision.

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Section: Resultssupporting

confidence: 92%

Double Differential Cross-Section Measurements for Methane Molecule at 350 eV

et al. 2014

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“…The measurements in Afyon have been carried out using an electron-electron coincidence spectrometer. A detailed description of the apparatus and its applications to ionization of atomic and molecular targets is given in references [24], [35] and [28] and so only a brief description is presented here. The spectrometer comprises an electron gun, two rotatable electrostatic hemispherical electron analyzers equipped with channel electron multipliers (CEM's), and a Faraday cup.…”

Section: A the Afyon Experiments And Resultsmentioning

confidence: 99%

Triple differential cross sections for electron-impact ionization of methane at intermediate energy

Ali

Granados

Sakaamini

et al. 2019

The Journal of Chemical Physics

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We report an experimental and theoretical investigation of electron-impact single ionization of the HOMO 1t 2 and the NHOMO 2a 1 states of CH 4 at an incident electron energy of 250 eV. Triple differential cross sections measured in two different laboratories were compared with results calculated within the molecular 3-body distorted wave (M3DW) and generalized Sturmian function (GSF) theoretical models. For ionization of the 1t 2 state, the binary peak was observed to have a single maximum near the momentum transfer direction that evolved into a double peak for increasing projectile scattering angles, as has been seen for ionization of atomic p-states. A detailed investigation of this evolution was performed. As expected because of its s-type character, for ionization of the 2a 1 state only a single binary peak was observed. Overall, good agreement was found between experiment and theory.

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“…The experimental apparatus and working procedure are described in details in Refs [20,21]. Briefly, the electron spectrometer used for such an experiment, consists of a primary beam source, a collision chamber and a rotatable analyzing system.…”

Section: Materials and Methods-experimental Apparatusmentioning

confidence: 99%

Differential Cross Sections for Elastic Scattering of Electrons From Molecular Nitrogen

Ozer

2020

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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In the field of molecular collisions, there has been a kind of rebirth with respect to the scattering of electrons both experimentally and theoretically. From experimental point of view, most data are available only in a limited energy and angular range. From the theoretical side, new and different models have been developed and experimental data is needed to test these theoretical models. The basic concept in elastic scattering of electrons from atoms and molecules is the differential cross-section (DCS). As a function of scattering angle and electron impact energy the cross-sections can be measured and these results reveal important information about projectile, target and also about the atomic and molecular structures. In this work experimentally measured DCSs for elastic scattering of electrons by molecular nitrogen are presented.

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Double Differential Cross-Sections for Electron Impact Ionization of Atoms and Molecules

Cited by 19 publications

References 124 publications

Double Differential Cross-Section Measurements for Methane Molecule at 350 eV

Double Differential Cross-Section Measurements for Methane Molecule at 350 eV

Triple differential cross sections for electron-impact ionization of methane at intermediate energy

Differential Cross Sections for Elastic Scattering of Electrons From Molecular Nitrogen

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