Small-angle electron scattering by formaldehyde and ketene: Effects of electron correlation and chemical binding

1992 ◽  
Vol 43 (5) ◽  
pp. 701-712 ◽  
Author(s):  
Yorihiko Sasaki ◽  
Hiroshi Takeuchi ◽  
Shigehiro Konaka ◽  
Masao Kimura
Keyword(s):  
Electron Scattering ◽  
Small Angle ◽  
Electron Correlation ◽  
Chemical Binding

Small Angle Electron Scattering From Vacuum Condensed Metallic Films

1968 ◽  
Vol 26 ◽  
pp. 380-381
Author(s):  
J. Silcox ◽  
R. H. Wade
Keyword(s):  
Electron Scattering ◽  
Small Angle ◽  
Ring Structure ◽  
Two Dimensional ◽  
Metallic Films ◽  
Micro Structure ◽  
Angle Scattering ◽  
The Fourier Transform ◽  
Source Of Information ◽  
Kinematical Theory

Recent work has drawn attention to the possibilities that small angle electron scattering offers as a source of information about the micro-structure of vacuum condensed films. In particular, this serves as a good detector of discontinuities within the films. A review of a kinematical theory describing the small angle scattering from a thin film composed of discrete particles packed close together will be presented. Such a model could be represented by a set of cylinders packed side by side in a two dimensional fluid-like array, the axis of the cylinders being normal to the film and the length of the cylinders becoming the thickness of the film. The Fourier transform of such an array can be regarded as a ring structure around the central beam in the plane of the film with the usual thickness transform in a direction normal to the film. The intensity profile across the ring structure is related to the radial distribution function of the spacing between cylinders.

Small-Angle Electron Scattering (SAES) of Polymers

1985 ◽  
Vol 43 ◽  
pp. 78-79
Author(s):  
Ralph Oralor ◽  
Pamela Lloyd ◽  
Satish Kumar ◽  
W. W. Adams
Keyword(s):  
Electron Scattering ◽  
Small Angle ◽  
Angular Resolution ◽  
Structural Features ◽  
Objective Lens ◽  
High Angular Resolution ◽  
Push Button ◽  
First Case ◽  
Diffraction Mode ◽  
Very High

Small angle electron scattering (SAES) has been used to study structural features of up to several thousand angstroms in polymers, as well as in metals. SAES may be done either in (a) long camera mode by switching off the objective lens current or in (b) selected area diffraction mode. In the first case very high camera lengths (up to 7Ø meters on JEOL 1Ø ØCX) and high angular resolution can be obtained, while in the second case smaller camera lengths (approximately up to 3.6 meters on JEOL 1Ø ØCX) and lower angular resolution is obtainable. We conducted our SAES studies on JEOL 1ØØCX which can be switched to either mode with a push button as a standard feature.

Longitudinal magnetoresistance in silver and copper between 4.2 and 35 °K

1967 ◽  
Vol 302 (1468) ◽  
pp. 83-98 ◽  
Keyword(s):  
Relaxation Time ◽  
Electron Scattering ◽  
Small Angle ◽  
Time Approximation ◽  
Long Wavelength ◽  
Relaxation Time Approximation ◽  
Angle Scattering ◽  
Different Types ◽  
Pure Single Crystal ◽  
Longitudinal Magnetoresistance

Longitudinal magnetoresistance has been measured in a number of single crystals of silver and one very pure single crystal of copper in fields up to 65 kG and at temperatures between 4.2 and 35 °K. The purpose of the work has been to investigate the effects of different types of electron scattering, in particular small angle scattering. It has been found that at 4.2 °K impure crystals obey the relaxation time approximation fairly well, whereas crystals that have been purified (by oxidation at 800 °C) do not. Above 4.2 °K, the addition of long wavelength phonons has caused the magnetoresistance to increase substantially, as predicted by Pippard (1964), but agreement with Pippard’s theory is only qualitative. To account for the results a more detailed treatment of the scattering is required.

scholarly journals A Reinvestigation of Small-angle Electron Scattering by CS2and CCl4Molecules

1982 ◽  
Vol 55 (1) ◽  
pp. 28-32 ◽  
Author(s):  
Makoto Nagashima ◽  
Shigehiro Konaka ◽  
Masao Kimura
Keyword(s):  
Electron Scattering ◽  
Small Angle

scholarly journals Small angle inelastic electron scattering in helium, neon, and argon

1934 ◽  
Vol 145 (855) ◽  
pp. 465-474 ◽  
Keyword(s):  
Electron Energy ◽  
Electron Scattering ◽  
Small Angle ◽  
Inelastic Electron ◽  
Absolute Determination ◽  
Inelastic Electron Scattering ◽  
Helium Neon ◽  
Subject Theory ◽  
Theory And Experiment

A considerable amount of work, both theoretical and experimental, in the domain of electron scattering in gases has been carried out in recent years, and a comprehensive and most useful treatise has recently been written by Mott and Massey on this subject. Theory and experiment are in general relative agreement, it appears, at scattering angles greater than 10° and over wide ranges of electron energy, but so far attention has not been directed to the phenomena at angles much less than 10°—nor has an absolute determination of the probability of any type of collision been made experimentally. The present work is an attempt to obtain results in these directions.

Recent theoretical advances in small-angle electron scattering

1998 ◽  
Vol 454 (2-3) ◽  
pp. 187-200
Author(s):  
Alfred Z. Msezane ◽  
Zineb Felfli
Keyword(s):  
Electron Scattering ◽  
Small Angle
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