scholarly journals Measurement of Compton scattering cross section at a few GeV electron energy

2018 ◽  
Author(s):  
Li Ye
Keyword(s):  
Compton Scattering ◽  
Electron Energy ◽  
Cross Section ◽  
Scattering Cross Section ◽  
Scattering Cross

scholarly journals Electron Mobility in Liquid Argon

1959 ◽  
Vol 12 (1) ◽  
pp. 105 ◽  
Author(s):  
FD Stacey
Keyword(s):  
Kinetic Theory ◽  
Electric Field ◽  
Electron Energy ◽  
Cross Section ◽  
Drift Velocity ◽  
Electron Mobility ◽  
Alternative Explanation ◽  
Liquid Argon ◽  
Scattering Cross Section ◽  
Scattering Cross

Experiments of Williams (1957) showed that the drift velocity of electrons in liquid argon to which an electric field F is applied is essentially independent of F. If the electrons remain free then their motion can be described by kinetic theory, from which it appears that electron mobility is proportional to F-I and drift velocity to Fli. This is the dependence reported by Malkin and Schultz (1951), but it is evident that the recent, more exhaustive work of Williams (1957) is correct on this point and therefore that kinetic theory is not applicable to the problem. This theory could in principle be extended to explain a fieldindependent velocity, by supposing a special dependence upon electron energy of the scattering cross section for the collision of electrons with argon atoms, but this is very artificial and unnecessary in view of the alternative explanation suggested here; in any case it leaves further serious objections, which will also be discussed briefly.

Inelastic Compton scattering of photons by bound atomic electrons in weakly coupled plasmas

2000 ◽  
Vol 64 (1) ◽  
pp. 89-95 ◽  
Author(s):  
YOUNG-DAE JUNG
Keyword(s):  
Compton Scattering ◽  
Cross Section ◽  
Particle Interaction ◽  
Transition Matrix Element ◽  
Scattering Cross Section ◽  
Scattering Cross ◽  
Plasma Screening ◽  
Weakly Coupled ◽  
Atomic Electrons ◽  
Coupled Plasmas

Plasma screening effects on inelastic Compton scattering of photons by bound atomic electrons of hydrogenic target ions in weakly coupled plasmas are investigated. The particle interaction potential in weakly coupled plasmas is obtained using the Debye–Hückel model. The screened wave functions and energy eigenvalues for the ground and excited states of the target ion are obtained using the Ritz variational method. The expression for the lowest-order transition matrix element is obtained from a two-photon process associated with terms quadratic in the vector potential A. The inelastic Compton scattering cross-section from the 1s ground state to the 2p excited state is obtained as a function of the incident photon energy, including plasma screening effects. It is found that plasma screening effects significantly reduce the inelastic Compton scattering cross-section.

scholarly journals Спектроскопия потерь энергии отраженных электронов γ-Fe-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=-

2021 ◽  
Vol 63 (8) ◽  
pp. 1049
Author(s):  
А.С. Паршин ◽  
Ю.Л. Михлин ◽  
Г.А. Александрова
Keyword(s):  
Inelastic Scattering ◽  
Electron Energy ◽  
Cross Section ◽  
Mean Free Path ◽  
Primary Electron ◽  
Scattering Cross Section ◽  
Energy Losses ◽  
Inelastic Electron ◽  
Primary Electron Energy ◽  
Scattering Cross

The reflection electron energy losses spectra, obtained in a wide primary electron energy range of 200 - 3000 eV, are investigated. From these experimental spectra, for each primary electron energy, the spectra of the inelastic scattering cross section of electrons are calculated as the dependence of the product of the inelastic electron mean free path and the differential inelastic scattering cross section of electrons on the electron energy loss. The analysis of the fine structure of the reflection electron energy losses was carried out by decomposing the electron energy losses spectra in the region of energy losses of valence electrons into elementary peaks. A relationship is established between each of their elementary peaks with single and multiple energy losses due to the excitation of bulk and surface plasmons and interband transitions of electrons from the valence band to free states above the Fermi level. The analysis of the obtained results was carried out on the basis of experimental and theoretical literature data on the band structure of  Fe2O3.

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