scholarly journals Measurement and analysis of the mean free path governing high-energy electron scattering in CdTe, via off-axis electron holography

2021 ◽  
Vol 129 (5) ◽  
pp. 055109
Author(s):  
Cathal Cassidy ◽  
Hidehito Adaniya ◽  
Tsumoru Shintake
Keyword(s):  
Free Path ◽  
Electron Scattering ◽  
Mean Free Path ◽  
High Energy ◽  
Energy Electron ◽  
Electron Holography ◽  
High Energy Electron ◽  
Measurement And Analysis ◽  
The Mean

Electron Refraction of Amorphous Nanospheres

1997 ◽  
Vol 3 (S2) ◽  
pp. 1055-1056
Author(s):  
Y.C. Wang ◽  
T.M. Chou ◽  
M. Libera
Keyword(s):  
Refractive Index ◽  
Electron Scattering ◽  
Unit Volume ◽  
High Energy ◽  
Covalent Bonding ◽  
Electron Holography ◽  
High Energy Electron ◽  
Electron Wave ◽  
Transmission Electron ◽  
The Mean

The phase shift imparted to an incident high-energy electron wave in a TEM is related to the specimen’s electron-refractive properties. These, in turn, are related to the electrostatic potential and, by Fourier transform (1), to the electron scattering factors fei(s) for the various atom species i in the specimen and scattering vectors s. The average refractive index is determined by the mean electrostatic (inner) potential, Φo, and can be modelled as Φo = (C/Ω) Σfei(s0) [equation 1] where C = 47.878 (V-Å2) and the summation runs over all of the atoms in the unit volume Ω (2). Calculated fei(s) data are available from the literature (e.g. 3). These calculations have only been done for neutral atoms and some fully ionized cations and anions. They do not account for electron redistribution due to covalent bonding to which Φo is quite sensitive (4).This research is making Φo measurements using transmission electron holography. Holograms were collected using a 200keV Philips CM20 FEG TEM equipped with a non-rotatable biprism (5) and a Gatan 794 Multiscan camera.

High-energy electron scattering study of molecular hydrogen

1991 ◽  
Vol 43 (7) ◽  
pp. 3548-3552 ◽  
Author(s):  
Yuheng Zhang ◽  
Andrew W. Ross ◽  
Manfred Fink
Keyword(s):  
Electron Scattering ◽  
Molecular Hydrogen ◽  
High Energy ◽  
Energy Electron ◽  
High Energy Electron ◽  
Scattering Study

scholarly journals A CHARGE FORM FACTOR (CFF) OF 5He NUCLEUS

2019 ◽  
Vol 14 (2) ◽  
Author(s):  
Piyush Sinha ◽  
Neelam Sinha
Keyword(s):  
Electron Scattering ◽  
Fourier Transforms ◽  
Form Factors ◽  
High Energy ◽  
Energy Electron ◽  
High Energy Electron ◽  
Structure Factors ◽  
Transition Matrix Elements ◽  
Current Densities ◽  
A Charge

High energy electron scattering is a very powerful tool for studying geometrical details of nuclear structure. The studies provide information on static distribution of charge and magnetization in nuclei. As the interaction is relatively weak so that in the scattering process the internal structure of the target nucleus is not significantly disturbed. Using electrons as projectile, we can study how transition matrix elements vary with q2 and map out the Fourier transforms of the transition charge and current densities called Form Factors or Structure factors. In the high energy electron scattering we can know the details of the spatial distribution of transition charge and current density. In this paper we have formulated CFF for 5He nucleus

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