The space charge lenses intended for focusing of ion beams have been proposed for the first time by D. Gabor in 1947. Their optical force exceeds on 2 orders of magnitude optical force of electrostatic and on 4 orders optical force of magnet lenses with other things being equal. The basic advantage of a Gabor lens, besides high optical force, consists in ability to focus intensive ion beams as an ion space charge does not deform initial distribution of potential in a lens. The distribution of focusing potential is created by a space charge of compensating electrons. The theoretical and experimental research of Gabor lenses has led to creation of the plasma optics-a new section of plasma physics. These lenses are successfully applied to focusing the high current and of high energy ion beams, and beams of heavy ions also. The use of space charge lenses is of interest for additional heating of thermonuclear plasma in installations TOKAMAK at injection of intensive ion beams with their subsequent neutralization.
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