Summary Abstract: Core electron energy loss spectroscopy of rare earths

1985 ◽  
Vol 3 (3) ◽  
pp. 1496-1497 ◽  
Author(s):  
Falko P. Netzer
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Rare Earths ◽  
Electron Energy Loss Spectroscopy ◽  
Core Electron ◽  
Electron Energy Loss

Valence excitations of rare earths by electron energy loss spectroscopy

1985 ◽  
Vol 152-153 ◽  
pp. 757-764 ◽  
Author(s):  
F.P. Netzer ◽  
G. Strasser ◽  
G. Rosina ◽  
J.A.D. Matthew
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Rare Earths ◽  
Electron Energy Loss Spectroscopy ◽  
Electron Energy Loss

Valence excitations of rare earths by electron energy loss spectroscopy

1985 ◽  
Vol 152-153 ◽  
pp. A146
Author(s):  
F.P. Netzer ◽  
G. Strasser ◽  
G. Rosina ◽  
J.A.D. Matthew
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Rare Earths ◽  
Electron Energy Loss Spectroscopy ◽  
Electron Energy Loss

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.

Trends in Electron Energy Loss Spectroscopy

1977 ◽  
Vol 35 ◽  
pp. 228-229
Author(s):  
C. Colliex ◽  
P. Trebbia
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Materials Science ◽  
Analytical Technique ◽  
Recent Developments ◽  
Quantitative Results ◽  
Electron Microscopes ◽  
Electron Energy Loss ◽  
Primary Electrons

The physical foundations for the use of electron energy loss spectroscopy towards analytical purposes, seem now rather well established and have been extensively discussed through recent publications. In this brief review we intend only to mention most recent developments in this field, which became available to our knowledge. We derive also some lines of discussion to define more clearly the limits of this analytical technique in materials science problems.The spectral information carried in both low ( 0<ΔE<100eV ) and high ( >100eV ) energy regions of the loss spectrum, is capable to provide quantitative results. Spectrometers have therefore been designed to work with all kinds of electron microscopes and to cover large energy ranges for the detection of inelastically scattered electrons (for instance the L-edge of molybdenum at 2500eV has been measured by van Zuylen with primary electrons of 80 kV). It is rather easy to fix a post-specimen magnetic optics on a STEM, but Crewe has recently underlined that great care should be devoted to optimize the collecting power and the energy resolution of the whole system.

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