Characteristic Energy Loss of Electrons Passing through Metal Foils. II. Dispersion Relation and Short Wavelength Cutoff for Plasma Oscillations

1957 ◽  
Vol 107 (2) ◽  
pp. 450-462 ◽  
Author(s):  
Richard A. Ferrell
Keyword(s):  
Dispersion Relation ◽  
Energy Loss ◽  
Short Wavelength ◽  
Characteristic Energy ◽  
Plasma Oscillations ◽  
Metal Foils

Background Fitting in the Low-Loss Region of Electron Energy Loss Spectra

1990 ◽  
Vol 48 (2) ◽  
pp. 56-57
Author(s):  
C P Scott ◽  
A J Craven ◽  
C J Gilmore ◽  
A W Bowen
Keyword(s):  
Energy Loss ◽  
Multiple Scattering ◽  
Simple Form ◽  
Single Scattering ◽  
Low Loss ◽  
Characteristic Energy ◽  
Normal Method ◽  
Fitting In ◽  
Electron Energy Loss ◽  
Electron Energy Loss Spectra

The normal method of background subtraction in quantitative EELS analysis involves fitting an expression of the form I=AE-r to an energy window preceding the edge of interest; E is energy loss, A and r are fitting parameters. The calculated fit is then extrapolated under the edge, allowing the required signal to be extracted. In the case where the characteristic energy loss is small (E < 100eV), the background does not approximate to this simple form. One cause of this is multiple scattering. Even if the effects of multiple scattering are removed by deconvolution, it is not clear that the background from the recovered single scattering distribution follows this simple form, and, in any case, deconvolution can introduce artefacts.The above difficulties are particularly severe in the case of Al-Li alloys, where the Li K edge at ~52eV overlaps the Al L2,3 edge at ~72eV, and sharp plasmon peaks occur at intervals of ~15eV in the low loss region. An alternative background fitting technique, based on the work of Zanchi et al, has been tested on spectra taken from pure Al films, with a view to extending the analysis to Al-Li alloys.

Characteristic-energy-loss spectra of vanadium and ofV2O3

1974 ◽  
Vol 9 (8) ◽  
pp. 3369-3376 ◽  
Author(s):  
F. J. Szalkowski ◽  
P. A. Bertrand ◽  
G. A. Somorjai
Keyword(s):  
Energy Loss ◽  
Characteristic Energy

The effect of boundaries on wave propagation in a liquid-filled porous solid: VI. Love waves in a double surface layer

1964 ◽  
Vol 54 (1) ◽  
pp. 417-423
Author(s):  
H. Deresiewicz
Keyword(s):  
Wave Propagation ◽  
Surface Layer ◽  
Dispersion Relation ◽  
Energy Loss ◽  
Classical Solution ◽  
Specific Energy ◽  
Classical Case ◽  
Specific Energy Loss ◽  
Double Surface ◽  
The One

abstract The classical solution of Stoneley and Tillotson is generalized by considering the outer one of the pair of layers to be porous. Although the dispersion relation turns out, for practical purposes, to be identical with the one governing the classical case, the motion in the present instance is shown to be dissipative and the expression is exhibited for the specific energy loss.

Dispersion relation of high-frequency plasma oscillations in Hall thrusters

2008 ◽  
Vol 15 (3) ◽  
pp. 034502 ◽  
Author(s):  
A. Lazurenko ◽  
G. Coduti ◽  
S. Mazouffre ◽  
G. Bonhomme
Keyword(s):  
Dispersion Relation ◽  
High Frequency ◽  
Hall Thrusters ◽  
Plasma Oscillations ◽  
High Frequency Plasma ◽  
Frequency Plasma
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