MAGNETIC SYSTEM OF PLANAR MAGNETRON Russian patent published in 1998 - IPC

FIELD: magnetic devices. SUBSTANCE: magnetic system consisting of radially arranged magnets with magnetic energy density as high as 40 kJ/cu.m, vertically arranged and oppositely oriented peripheral and central magnets with magnetic energy density higher than 40 kJ/cu.m is provided with magnetic conduit of ferromagnetic material abridging lower ends of peripheral and central magnets and being located at 5-10 mm distance from lower surface of radial magnets. On upper surfaces of peripheral and central magnets, continuous polar tips of ferromagnetic material are installed. EFFECT: improved design. 1 dwg