Open AccessБезаберрационная линза и корректоры аберраций
Author(s) -
В.В. Лукашевич
Publication year - 2020
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2020.06.49292.288-19
Subject(s) - optics , lens (geology) , electrostatic lens , spherical aberration , beam (structure) , magnet , physics , axial symmetry , materials science , quantum mechanics
An aberration-free four-electrode lens is described for forming an ion beam for mass separators or spectrometers. The lens is a modification of the transaxial lens, in which the circular gaps between the electrodes are replaced by elliptical gaps. A lens converts an axially symmetric beam into a tape-type beam. The lens parameters are found using the phase diagram method. Using the same method, a new aberration corrector for electrostatic lenses and a new sector magnet aberration corrector are developed.