Radiant energy – Electron energy analysis
Patent
1988-01-28
1989-07-04
Howell, Janice A.
Radiant energy
Electron energy analysis
250396R, H01J 4548
Patent
active
048453617
ABSTRACT:
High energy resolution at high electron current at the specimen or at the detector is obtained by an electron beam guiding with focusing energy selection, in particular in an electron spectrometer with emission system and at least one energy dispersive system with different focusing in two mutually perpendicular directions, by a non-circular-symmetrical lens system placed after or before the energy dispersive system and correcting the different focusing of the electrons in the two mutually perpendicular directions such that either the virtual or the real entry stop of the energy dispersive system is imaged on an accessible image plane outside the energy dispersive system or an object outside the energy dispersive system is imaged on the virtual or real exit stop of the latter.
REFERENCES:
patent: 4742223 (1988-05-01), Kesmodel
A Low Energy Electron Impact Spectrometer for the Study of Excited States Molecules in the Gas Phase, Roderick S. Stradling, Dept. of Chem., Univ. of London, Apr. 1, 77, pp. 595-600.
"Electron Monochromator Design", by Kuyatt et al., The Review of Scientific Instruments, vol. 38, No. 1, Jan. 1967.
Bruchmann Heinz-Dieter
Ibach Harald
Lehwald Sieghart
Aronoff Michael
Howell Janice A.
Kernforschungsanlage Juelich Gesellschaft mit beschraenkter Haft
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