A semi-empirical formula for total cross sections of electron scattering from diatomic molecules

1996 ◽  
Vol 222 (4) ◽  
pp. 233-236 ◽  
Author(s):  
Yufang Liu ◽  
Jinfeng Sun
Keyword(s):  
Electron Scattering ◽  
Cross Sections ◽  
Empirical Formula ◽  
Diatomic Molecules ◽  
Total Cross Sections ◽  
Semi Empirical

An Empirical Formula Approach to Total Cross Sections for Electron Scattering on Polyatomic Molecules

2005 ◽  
Vol 22 (11) ◽  
pp. 2801-2804
Author(s):  
Du Chao-Ling ◽  
Sun Jin-Feng ◽  
Liu Yu-Fang ◽  
Cheng Guang-Xu ◽  
Chen Yan-Feng
Keyword(s):  
Electron Scattering ◽  
Cross Sections ◽  
Empirical Formula ◽  
Polyatomic Molecules ◽  
Total Cross Sections

scholarly journals Total Cross Sections for Electron and Positron Scattering on Molecules: In Search of the Dispersion Relation

Atoms ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 97
Author(s):  
Fabio Carelli ◽  
Kamil Fedus ◽  
Grzegorz Karwasz
Keyword(s):  
Dispersion Relation ◽  
Electron Scattering ◽  
Cross Sections ◽  
Refraction Index ◽  
Wide Energy Range ◽  
Positron Scattering ◽  
Total Cross Sections ◽  
Theoretical Investigations ◽  
Wide Energy ◽  
Semi Empirical

More than one hundred years of experimental and theoretical investigations of electron scattering in gases delivered cross-sections in a wide energy range, from few meV to keV. An analogy in optics, characterizing different materials, comes under the name of the dispersion relation, i.e., of the dependence of the refraction index on the light wavelength. The dispersion relation for electron (and positron) scattering was hypothesized in the 1970s, but without clear results. Here, we review experimental, theoretical, and semi-empirical cross-sections for N2, CO2, CH4, and CF4 in search of any hint for such a relation—unfortunately, without satisfactory conclusions.

scholarly journals Total Electron Scattering Cross Sections of He, Ne, Ar, Kr and Xe in the Energy Range 100 eV to 10 000 eV

2009 ◽  
Vol 64 (9-10) ◽  
pp. 665-670
Author(s):  
Xiao-Ming Tan ◽  
Chuan-Lu Yang ◽  
Mei-Shan Wang ◽  
Zhi-Hong Zhang
Keyword(s):  
Energy Range ◽  
Electron Scattering ◽  
Cross Sections ◽  
Model Potential ◽  
Total Electron ◽  
Total Cross Sections ◽  
Optical Model Potential ◽  
Scattering Cross Sections ◽  
Experimental And Theoretical Studies ◽  
Theoretical Results

The total cross sections for electron scattering from He, Ne, Ar, Kr and Xe in the energy range from 100 eV to 10 000 eV have been calculated based on the optical-model potential. Our theoretical results are compared with the available experimental data. The consistency between them is also discussed. At higher energies (over 2000 eV for He, over 5000 eV for Ne, Ar, Kr and Xe), the total cross sections of electron scattering from these atoms are scarce, so our calculations will give a reference for further experimental and theoretical studies.

Total cross sections for electron scattering by oxides of iron

1995 ◽  
Vol 198 (3) ◽  
pp. 225-227 ◽  
Author(s):  
K.L. Baluja ◽  
Anju Agrawal
Keyword(s):  
Electron Scattering ◽  
Cross Sections ◽  
Total Cross Sections

Thermal scattering of atoms by homonuclear diatomic molecules

1963 ◽  
Vol 274 (1359) ◽  
pp. 427-442 ◽  
Keyword(s):  
Cross Sections ◽  
Diatomic Molecules ◽  
Rotational Quantum Number ◽  
Formal Theory ◽  
Rotational Transition ◽  
Rigid Rotator ◽  
Total Cross Sections ◽  
Total Scattering Cross Section ◽  
Scattering Of Atoms ◽  
Homonuclear Diatomic Molecules

The formal theory of scattering by a rigid rotator is applied to the problem of the rotational excitation and elastic scattering of homonuclear diatomic molecules by atoms. A statistical theory is employed to analyze the effects of the strong coupling which occurs between the different scattering channels. According to this theory the Massey-Mohr formula provides a good approximation to the total scattering cross-section, an upper limit of ½ holds for the ratio of inelastic to total cross-sections and the probability of a rotational transition does not depend very sensitively on the corresponding change in the rotational quantum number. Numerical results are presented for the collision of argon and nitrogen at room temperature.

Total cross sections for electron scattering by molecules

1994 ◽  
Vol 195 (1) ◽  
pp. 81-83 ◽  
Author(s):  
Jinfeng Sun ◽  
Yuhai Jiang ◽  
Lingde Wan
Keyword(s):  
Electron Scattering ◽  
Cross Sections ◽  
Total Cross Sections
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