Electron-energy-loss rates inAlxGa1−xAs/GaAs heterostructures at low temperatures

1987 ◽  
Vol 35 (17) ◽  
pp. 9203-9208 ◽  
Author(s):  
S. J. Manion ◽  
M. Artaki ◽  
M. A. Emanuel ◽  
J. J. Coleman ◽  
K. Hess
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Low Temperatures ◽  
Electron Energy Loss ◽  
Loss Rates

Cyclotron phonon emission and electron energy loss rates in GaAsGaAlAs heterojunctions

1989 ◽  
Vol 32 (12) ◽  
pp. 1473-1477 ◽  
Author(s):  
D.R. Leadley ◽  
R.J. Nicholas ◽  
J.J. Harris ◽  
C.T. Foxon
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Phonon Emission ◽  
Electron Energy Loss ◽  
Loss Rates

Cyclotron phonon emission and electron energy loss rates in GaAs-GaAlAs heterojunctions

1989 ◽  
Vol 4 (10) ◽  
pp. 879-884 ◽  
Author(s):  
D R Leadley ◽  
R J Nicholas ◽  
J J Harris ◽  
C T Foxon
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Phonon Emission ◽  
Electron Energy Loss ◽  
Loss Rates

Data Acquisition and Handling Unit for a Quantitative Use of Electron Energy Loss Spectroscopy

1977 ◽  
Vol 35 ◽  
pp. 232-233 ◽  
Author(s):  
P. Trebbia ◽  
P. Ballongue ◽  
C. Colliex
Keyword(s):  
Electron Microscope ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Single Channel ◽  
Detection System ◽  
Surface Barrier ◽  
Solid State Detector ◽  
Electrostatic Mirror ◽  
Electron Energy Loss

An effective use of electron energy loss spectroscopy for chemical characterization of selected areas in the electron microscope can only be achieved with the development of quantitative measurements capabilities.The experimental assembly, which is sketched in Fig.l, has therefore been carried out. It comprises four main elements.The analytical transmission electron microscope is a conventional microscope fitted with a Castaing and Henry dispersive unit (magnetic prism and electrostatic mirror). Recent modifications include the improvement of the vacuum in the specimen chamber (below 10-6 torr) and the adaptation of a new electrostatic mirror.The detection system, similar to the one described by Hermann et al (1), is located in a separate chamber below the fluorescent screen which visualizes the energy loss spectrum. Variable apertures select the electrons, which have lost an energy AE within an energy window smaller than 1 eV, in front of a surface barrier solid state detector RTC BPY 52 100 S.Q. The saw tooth signal delivered by a charge sensitive preamplifier (decay time of 5.10-5 S) is amplified, shaped into a gaussian profile through an active filter and counted by a single channel analyser.

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