The Electron Mean Free Path for Volume Plasmon Excitation in Polycrystalline Beryllium

1987 ◽  
Vol 42 (11) ◽  
pp. 1372-1373
Author(s):  
A. Grzeszczak
Keyword(s):  
Energy Loss ◽  
Free Path ◽  
Mean Free Path ◽  
Primary Energy ◽  
Primary Electron ◽  
Plasmon Excitation ◽  
Electron Mean Free Path ◽  
Electron Energy Loss ◽  
Electron Energy Loss Spectra ◽  
Volume Plasmon

Reflection electron energy loss spectra from polycrystalline beryllium for primary electron energies within 100-1000 eV are measured. The peak intensities increase with the primary energy. From this dependence the electron mean free path for volume plasmon excitation in beryllium is evaluated.

scholarly journals Determining Inelastic Mean Free Path by Electron Energy Loss Spectroscopy

2006 ◽  
Vol 12 (S02) ◽  
pp. 1186-1187 ◽  
Author(s):  
Q Jin ◽  
D Li
Keyword(s):  
Energy Loss ◽  
Free Path ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Mean Free Path ◽  
Inelastic Mean Free Path ◽  
Electron Energy Loss

Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2006

Parameterization of the mean free path for inelastic scattering of fast electrons

1987 ◽  
Vol 45 ◽  
pp. 122-123
Author(s):  
R. F. Egerton ◽  
S. C. Cheng ◽  
T. Malis
Keyword(s):  
Energy Loss ◽  
Free Path ◽  
Mean Free Path ◽  
Fast Electrons ◽  
Before And After ◽  
The Mean ◽  
Convergent Beam ◽  
Inelastic Mean Free Path ◽  
Electron Energy Loss ◽  
Beam Diffraction

The areas, Iz and It, under the zero-loss peak and under the entire energy-loss spectrum (of a sample of thickness t) are related by the formula:t/ƛ(β) = ln (It/Iz) (1)where ƛ(β) is the inelastic mean free path for all energy losses and for scattering into the collection aperture, of semiangle β. We have used Eq.(l) to experimentally determine ƛ(β) by electron energy-loss spectroscopy of specimens of known composition and thickness. In the case of crystalline samples, the local thickness t was measured by convergent-beam diffraction. In the case of evaporated thin-film specimens, the average thickness was obtained by accurately weighing the substrate before and after deposition. The energy-loss spectroscopy was carried out in CTEM mode with incident energies Eo between 20keV and 120keV, and with collection semiangles in the range 0.2 mrad to 100 mrad.

scholarly journals Intergalactic electromagnetic cascades in the magnetized Universe as a tool of astroparticle physics

2018 ◽  
Vol 191 ◽  
pp. 08009 ◽  
Author(s):  
Timur Dzhatdoev ◽  
Emil Khalikov ◽  
Anna Kircheva ◽  
Egor Podlesnyi ◽  
Anastasia Telegina
Keyword(s):  
Magnetic Field ◽  
Energy Loss ◽  
Free Path ◽  
Electron Energy ◽  
Coherence Length ◽  
Deflection Angle ◽  
Mean Free Path ◽  
Astroparticle Physics ◽  
Electron Energy Loss

We review the physics of intergalactic electromagnetic cascades in the presence of the extragalactic magnetic field (EGMF). Various regimes of intergalactic electromagnetic cascades are considered depending on the number of cascade generations, the value of the cascade electron deflection angle, and the relations between the EGMF coherence length, typical cascade γ-ray mean free path, and electron energy loss length. We also review contemporary constraints on the EGMF parameters and explore the sensitivity of various γ-ray instruments to the EGMF parameters.

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