Abstract
Electron optical properties of an axisymmetric mirror energy-analyzer are studied. The internal electrode represents a cylinder, and the external electrode is formed by two identical cones with common bases. It is shown that the relative aperture and resolution of such an analyzer are significantly greater than the corresponding parameters of a conventional cylindrical mirror. The internal electrode is made of three cylinders with different diameters, and the potentials of the cylinders are identical. Such a structure is used to further improve electron optical characteristics of the conical analyzer. At a relatively small beam angle, the resolution of the conical analyzer is two times greater than the resolution of the cylindrical mirror, and the difference of the resolutions amounts to an order of magnitude when the beam angle increases.
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