Elastic cross-section calculations for electron collisions with XY4 (X=Si, Ge; Y=H, F, Cl, Br, I) molecules

Możejko, Paweł; Żywicka-Możejko, Bożena; Szmytkowski, Czesław

doi:10.1016/s0168-583x(02)01336-8

Cited by 47 publications

(47 citation statements)

References 54 publications

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“…Employed in this work, theoretical methods and computational procedures are the same as those used in our earlier works; 11,12 thus, only a brief description is provided here.…”

Section: Theory and Numerical Calculationsmentioning

confidence: 99%

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Electron collisions with methyl-substituted ethylenes: Cross section measurements and calculations for 2-methyl–2-butene and 2,3-dimethyl–2-butene

Szmytkowski

Stefanowska

Zawadzki

et al. 2015

The Journal of Chemical Physics

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We report electron-scattering cross sections determined for 2-methyl-2-butene [(H3C)HC = C(CH3)2] and 2,3-dimethyl-2-butene [(H3C)2C = C(CH3)2] molecules. Absolute grand-total cross sections (TCSs) were measured for incident electron energies in the 0.5-300 eV range, using a linear electron-transmission technique. The experimental TCS energy dependences for the both targets appear to be very similar with respect to the shape. In each TCS curve, three features are discernible: the resonant-like structure located around 2.6-2.7 eV, the broad distinct enhancement peaking near 8.5 eV, and a weak hump in the vicinity of 24 eV. Theoretical integral elastic (ECS) and ionization (ICS) cross sections were computed up to 3 keV by means of the additivity rule (AR) approximation and the binary-encounter-Bethe method, respectively. Their sums, (ECS+ICS), are in a reasonable agreement with the respective measured TCSs. To examine the effect of methylation of hydrogen sides in the ethylene [H2C = CH2] molecule on the TCS, we compared the TCS energy curves for the sequence of methylated ethylenes: propene [H2C = CH(CH3)], 2-methylpropene [H2C = C(CH3)2], 2-methyl-2-butene [(H3C)HC = C(CH3)2], and 2,3-dimethyl-2-butene [(H3C)2C = C(CH3)2], measured in the same laboratory. Moreover, the isomeric effect is also discussed for the C5H10 and C6H12 compounds.

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“…Employed in this work, theoretical methods and computational procedures are the same as those used in our earlier works; 11,12 thus, only a brief description is provided here.…”

Section: Theory and Numerical Calculationsmentioning

confidence: 99%

“…In consequence, cross sections derived in this approach are reasonable for intermediate-and highcollision energies only. 11,14 The integral elastic electron-molecule scattering cross section (ECS) within AR method is given by…”

Section: Theory and Numerical Calculationsmentioning

confidence: 99%

Electron collisions with methyl-substituted ethylenes: Cross section measurements and calculations for 2-methyl–2-butene and 2,3-dimethyl–2-butene

Szmytkowski

Stefanowska

Zawadzki

et al. 2015

The Journal of Chemical Physics

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“…Thereafter, the elastic DCS, ICS, and MTCS for energies between 1.8 and 100 eV and a scattering angle range of 20°-130°was published by Tanaka et al 49 Subsequently, a Schwinger multichannel theoretical approach 50 reported corresponding cross sections for electron energies in the range 1 -30 eV. Recently, the DCS and ICS were calculated in the energy range of 20-2000 eV by Mozejko et al 51 using an independent atom model. Generally quite good agreement was found between the results from these calculations and the data of Tanaka et al, 49 so our recommended data in Table 20 below is consequently taken from the measurements of Tanaka …”

Section: -18 Yoon Et Almentioning

confidence: 99%

Elastic Cross Sections for Electron Collisions with Molecules Relevant to Plasma Processing

Yoon

Song

Kato

et al. 2010

Journal of Physical and Chemical Reference Data

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Absolute electron-impact cross sections for molecular targets, including their radicals, are important in developing plasma reactors and testing various plasma processing gases. Low-energy electron collision data for these gases are sparse and only the limited cross section data are available. In this report, elastic cross sections for electron-polyatomic molecule collisions are compiled and reviewed for 17molecules relevant to plasma processing. Elastic cross sections are essential for the absolute scale conversion of inelastic cross sections, as well as for testing computational methods. Data are collected and reviewed for elastic differential, integral, and momentum transfer cross sections and, for each molecule, the recommended values of the cross section are presented. The literature has been surveyed through early 2010.

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“…[19,20,30,31]). Because the theoretical approaches applied here, as well as the computational details, have been discussed extensively earlier [32,33], only a short outline of the used methods is given in the present paper.…”

Section: Calculationsmentioning

confidence: 99%

Cross sections for electron scattering from furan molecules: Measurements and calculations

et al. 2010

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Electron-scattering cross sections have been determined for the furan (C 4 H 4 O) molecule, both experimentally and theoretically. An absolute total cross section (TCS) has been measured over energies from 0.6 to 400 eV using a linear electron-transmission method. The TCS energy function is dominated with a very broad enhancement, between 1.2 and 9 eV; on the low-energy side, some resonant structures are visible. Integral elastic (ECS) and ionization (ICS) cross sections have been also calculated up to 4 keV in the additivity rule approximation and the binary-encounter-Bethe approach, respectively. Their sum, ECS + ICS, is in a very good agreement with the measured TCS above 70 eV.

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Elastic cross-section calculations for electron collisions with XY4 (X=Si, Ge; Y=H, F, Cl, Br, I) molecules

Cited by 47 publications

References 54 publications

Electron collisions with methyl-substituted ethylenes: Cross section measurements and calculations for 2-methyl–2-butene and 2,3-dimethyl–2-butene

Electron collisions with methyl-substituted ethylenes: Cross section measurements and calculations for 2-methyl–2-butene and 2,3-dimethyl–2-butene

Elastic Cross Sections for Electron Collisions with Molecules Relevant to Plasma Processing

Cross sections for electron scattering from furan molecules: Measurements and calculations

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