A.A. Trubitsyn - Dr.Sc. (Phys.-Math.), Professor, Department «Industrial Electronics», Ryazan State Radio Engineering University
M.V. Dubkov - Ph.D. (Eng.), Vice Rector for Academic Work, Ryazan State Radio Engineering University
D.Yu. Tarabrin - Post-graduate Student, Department «Industrial Electronics», Ryazan State Radio Engineering University

The main advantage of electron and ion optical systems, developed by means of principles of the new scientific direction «Izopath optics», is absolute absence of chromatic aberrations. It gives us the possibility to design electron microscopes with the high spatial resolution. We have realized the option of izopath optics systems modeling in the copy-right software «FOCUS». Numerical studies have shown independence the trajectories of charged particles on the initial energy and high level (second-order) geometrical focusing in a Einzel lens, which confirms the previously made analytical conclusions. On the basis of numerical simulations similar conclusions are made for other types of lenses - immersion lenses and diaphragms-lenses. Numerical analysis of such systems has allowed to establish the fact of the angular focusing in the izopath lenses. Thus, the numerical calculations show that izopath lenses can actually be an effective means of eliminating chromatic aberration in electron microscopes. Another advantage the izopath ion-optical systems with absolutely no chromatic aberration is the dispersion of the masses. It is shown that quite a large number of electrode systems has the high order angular focusing in izopath mode. It is demonstrated the presence of angular focusing of ion flux in the field of this izopath system consisting of an inner grounded cylinder and the outer conical electrode with variable potential V ~ 1/t2. Order of focusing equals to 4, a central angle is 43°. It is shown the possibility of developing a highly sensitive mass spectrometer based on such a system. It is proposed and studied design of the device, allowing us to supply mass analysis of ions in izopath mode and electron energy analysis in static mode.