Elastic electron differential cross sections for argon atom in the intermediate energy range from 40 eV to 300 eV

Ranković, Miloš Lj.; Maljković, Jelena B.; Tőkési, K.; Marinković, B P

doi:10.1140/epjd/e2017-80677-4

Cited by 13 publications

(26 citation statements)

References 42 publications

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“…Since the first electron-atom scattering experiments in 1931 [5], many theoretical and experimental studies on e ± -Ar have been available in the literature [6][7][8]. Apart from these investigations, the experimental works of Ranković et al [9], Zecca et al [10], Jones et al [11], Kurokawa et al [12], Cho and Park [13], Hargreaves et al [14], Milosavljević et al [15], Mielewska et al [16] and Gilbert et al [17], and the theoretical calculations of Ranković et al [9], Bartschat et al [18], Green et al [19], Fursa and Bray [20], Jones et al [11], Mohan et al [21], McEachran and Stauffer [22], Bote et al [23], Gargioni and Grosswendt [4], Adibzadeh and Theodosiou [24], Yousif Al-Mulla [25], Jablonski et al [26], Salvat [27], Stepanek [28], Blanco and García [29,30], Paikeday and Alexander [31], Kelemen [32], Bartlett and Stelbovics [33], Sienkiewicz et al [34] and Pandya and Shah [35], are worth mentioning among the important works.…”

Section: Introductionmentioning

confidence: 99%

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e^± Ar scattering in the energy range 1 eV ≤ E _i ≤ 0.5 GeV

Haque

Jakubaßa-Amundsen³

et al. 2019

J. Phys. Commun.

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A theoretical investigation on differential, integral, momentum transfer, viscosity cross sections and spin polarization for elastically scattered electrons and positrons from Ar atoms in the energy range 1 eVE i 0.5 GeV is presented. In addition, we have studied the critical minima in the elastic differential cross sections, and the absorption, total and ionization cross sections. Two different theoretical approaches, depending upon the incident energy, are employed for solving the relativistic Dirac equation with the partial-wave decomposition. The solution of the relativistic equation involves the use of either complex optical-model potentials or only nuclear potentials at higher energies. A comparison of the present results with the available experimental data and other theoretical findings produces a reasonable agreement throughout the investigated energy range.

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Section: Introductionmentioning

confidence: 99%

“…The same as figure 3, but for the incident energies (a) 30, (b) 40, (c) 50, (d) 60, (e) 70 and (f) 75 eV. The experimental data are from[9,13,59,61,81,82,84]. at 100, 200, 300, 400, 500, 750, 1000, 2000 and 3000 eV; Williams and Wills [84] at 30, 40, 50, 150, 200, 250, 300 and 400 eV; and Bromberg [85] at 200, 300, 400, 500 and 700 eV.…”

mentioning

confidence: 99%

e^± Ar scattering in the energy range 1 eV ≤ E _i ≤ 0.5 GeV

Haque

Jakubaßa-Amundsen³

et al. 2019

J. Phys. Commun.

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“…Experimental parameters were adjusted so that the interaction volume was kept constant. Deviations that can occur at small angles are corrected by comparing cross-sections from Ar at given energy with other authors’ data [ 42 , 43 ]. During the measurements, working pressure in the chamber was about 4 × 10 −6 mbar.…”

Section: Methodsmentioning

confidence: 99%

“…The known absolute DCSs for Ar are taken from Ranković et al [ 42 ] for incident electron energies 50–200 eV and 300 eV and from Williams and Willis [ 43 ] for electron energy of 250 eV. In both papers, the absolute values were derived by measurements of angular dependences of elastically scattered electrons using electron spectrometers, two 127° cylindrical electrostatic energy analyzer in [ 43 ], and a double cylindrical mirror analyzer in [ 42 ] but employing different normalization procedures.…”

Section: Methodsmentioning

confidence: 99%

Elastic Electron Scattering from Methane Molecule in the Energy Range from 50–300 eV

Vukalović

Maljković

Tőkési

et al. 2021

IJMS

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Electron interaction with methane molecule and accurate determination of its elastic cross-section is a demanding task for both experimental and theoretical standpoints and relevant for our better understanding of the processes in Earth’s and Solar outer planet atmospheres, the greenhouse effect or in plasma physics applications like vapor deposition, complex plasma-wall interactions and edge plasma regions of Tokamak. Methane can serve as a test molecule for advancing novel electron-molecule collision theories. We present a combined experimental and theoretical study of the elastic electron differential cross-section from methane molecule, as well as integral and momentum transfer cross-sections in the intermediate energy range (50–300 eV). The experimental setup, based on a crossed beam technique, comprising of an electron gun, a single capillary gas needle and detection system with a channeltron is used in the measurements. The absolute values for cross-sections are obtained by relative-flow method, using argon as a reference. Theoretical results are acquired using two approximations: simple sum of individual atomic cross-sections and the other with molecular effect taken into the account.

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“…DCS for elastic electron scattering by argon atom at 100 eV impact energy. The data symbols used correspond to: (red circles) , Rankovic et al [49] experiment; (dark red full line), Rankovic et al [49] theory; (magenta solid line), McEachran and Stauffer [50]; (olive dash dot line), Paikeday and Alexander [51]; (dotted line), Nahar and Wadehra [52]; (violet dash dot dot line), Fon et al [53]; (cyan dash dot line), McCarthy et al [54]; (dashed line), Joachain et al [55]; (cyan up triangles), Milosavljević et al [56]; (violet left triangle), Panajotović et al [57]; (orange pentagons), Srivastava et al [58]; (blue diamond), DuBois and Rudd [59]; (orange right triangles), Jansen et al [60]; (green circles), Williams and Willis [61].…”

Section: Elastic Electron Scattering and Cross Sectionsmentioning

confidence: 99%

Rosetta Mission: Electron Scattering Cross Sections—Data Needs and Coverage in BEAMDB Database

Marinković

Bredehöft

Vujčić

et al. 2017

Atoms

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Abstract:The emission of [O I] lines in the coma of Comet 67P/Churyumov-Gerasimenko during the Rosetta mission have been explained by electron impact dissociation of water rather than the process of photodissociation. This is the direct evidence for the role of electron induced processing has been seen on such a body. Analysis of other emission features is handicapped by a lack of detailed knowledge of electron impact cross sections which highlights the need for a broad range of electron scattering data from the molecular systems detected on the comet. In this paper, we present an overview of the needs for electron scattering data relevant for the understanding of observations in coma, the tenuous atmosphere and on the surface of 67P/Churyumov-Gerasimenko during the Rosetta mission. The relevant observations for elucidating the role of electrons come from optical spectra, particle analysis using the ion and electron sensors and mass spectrometry measurements. To model these processes electron impact data should be collated and reviewed in an electron scattering database and an example is given in the BEAMD, which is a part of a larger consortium of Virtual Atomic and Molecular Data Centre-VAMDC.

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Elastic electron differential cross sections for argon atom in the intermediate energy range from 40 eV to 300 eV

Cited by 13 publications

References 42 publications

e^± Ar scattering in the energy range 1 eV ≤ E _i ≤ 0.5 GeV

e^± Ar scattering in the energy range 1 eV ≤ E _i ≤ 0.5 GeV

Elastic Electron Scattering from Methane Molecule in the Energy Range from 50–300 eV

Rosetta Mission: Electron Scattering Cross Sections—Data Needs and Coverage in BEAMDB Database

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Elastic electron differential cross sections for argon atom in the intermediate energy range from 40 eV to 300 eV

Cited by 13 publications

References 42 publications

e± Ar scattering in the energy range 1 eV ≤ E i ≤ 0.5 GeV

e± Ar scattering in the energy range 1 eV ≤ E i ≤ 0.5 GeV

Elastic Electron Scattering from Methane Molecule in the Energy Range from 50–300 eV

Rosetta Mission: Electron Scattering Cross Sections—Data Needs and Coverage in BEAMDB Database

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Product

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e^± Ar scattering in the energy range 1 eV ≤ E _i ≤ 0.5 GeV

e^± Ar scattering in the energy range 1 eV ≤ E _i ≤ 0.5 GeV