Statistical analysis of the energy loss distribution of fast electrons travelling through matter

1989 ◽  
Vol 1 (14) ◽  
pp. 2557-2560
Author(s):  
J P Perez ◽  
F Testard ◽  
A Lannes
Keyword(s):  
Statistical Analysis ◽  
Energy Loss ◽  
Loss Distribution ◽  
Fast Electrons

On the energy loss of fast electrons in thin absorbers

1978 ◽  
Vol 64 (5) ◽  
pp. 442-443 ◽  
Author(s):  
T. Mukoyama ◽  
Y. Watanabe
Keyword(s):  
Energy Loss ◽  
Fast Electrons

scholarly journals Electrons and X-Ray Emission of Solar Flares

1990 ◽  
Vol 142 ◽  
pp. 409-413
Author(s):  
V. G. Kurt
Keyword(s):  
Solar Activity ◽  
Statistical Analysis ◽  
Solar Flare ◽  
Frequency Dependence ◽  
Power Law ◽  
Solar Flares ◽  
X Rays ◽  
Fast Electrons ◽  
X Ray ◽  
Flare Frequency

A statistical analysis of solar flare X-rays and interplanetary particle fluxes, measured onboard VENERA-13, 14 Spacecraft, was performed. The correlation of fluences for different manifestations of solar flares is strong, especially for fast electrons and hard and soft X-ray emissions. Frequency dependence on fluence value ϵi for practically all Kinds of solar flare emission can be described by power law ν (ϵ > ϵO) ∼ ϵ−0.45±0.15 which does not change significantly with solar activity. For different Hα flare importances the values of ϵi were obtained. It is proposed that appearance of certain energy flare frequency is strongly dependent on some scale factor.

Kilovolt Electron Energy Loss Distribution in GaAsP

1984 ◽  
Vol 85 (1) ◽  
pp. 205-213 ◽  
Author(s):  
G. Oelgaet ◽  
U. Werner
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Loss Distribution ◽  
Electron Energy Loss

The Use of Microspectroscopy in the Stem for the Identification of Membrane Components

1976 ◽  
Vol 34 ◽  
pp. 30-31
Author(s):  
J. Hainfeld ◽  
M. Isaacson ◽  
M. Sogard
Keyword(s):  
Energy Loss ◽  
Membrane Surface ◽  
Biological Membranes ◽  
Membrane Component ◽  
Fast Electrons ◽  
Intact Membrane ◽  
Membrane Components ◽  
Beam Dose ◽  
Practical Scheme

In recent years, more notice has been given to the fact that the energy loss spectra of fast electrons transmitted through thin specimens may be employed to analyze their composition (e.g. refs. 1,2). A program to explore the usefulness of energy loss spectra (with a STEM) in identifying the components of biological membranes has been initiated.One would like to scan, for example, over an intact membrane surface and analyze, point by point, the composition. However, some preliminary studies are necessary: First, the energy loss spectra of each major membrane component must be determined; second, the change in these spectra with beam dose must be found, since damage may be a problem as resolution (and therefore dose) is increased; third, a practical scheme of obtaining point-bypoint data (i.e., pictures that relate composition to contrast) must be devised.

Theoretical modelling of the size and shape of atomic images formed with inelastically scattered electrons

1995 ◽  
Vol 53 ◽  
pp. 278-279
Author(s):  
O.F. Holbrook ◽  
D.M. Bird
Keyword(s):  
Energy Loss ◽  
Inelastic Scattering ◽  
Signal To Noise Ratio ◽  
Single Atom ◽  
Theoretical Modelling ◽  
Resolution Limit ◽  
Fast Electrons ◽  
Size And Shape ◽  
Characteristic Image ◽  
Specific Amount

In electron diffraction the study of inelastic scattering processes has been revolutionised with the development of imaging PEELS. It is now relatively straightforward to produce images from fast electrons which have lost a specific amount of energy (to within about 5eV). Therefore electrons which have been inelastically scattered via an atomic transition, loosing a characteristic amount of energy, can in principle be used to form an equally characteristic image. It should be noted that such images will not be perfect since other single and multiple inelastic events may result in a similar energy loss which will tend to obscure the ideal picture. An important issue is the ultimate resolution limit of this type of atomic imaging. Although practical questions (such as signal-to-noise ratio) are important it is still interesting to ask what theoretical limit might be imposed by the underlying physics of the inelastic scattering and imaging processes. The work presented here is an initial investigation of the typical radial size and shape which can be expected when imaging a single atom and how these depend upon the transition and energy loss being considered.

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