Radiant energy – Ion generation – Field ionization type
Patent
1984-04-18
1986-09-09
Anderson, Bruce C.
Radiant energy
Ion generation
Field ionization type
3133611, 3133631, 31323141, 31511141, 31511181, H01J 2716
Patent
active
046111212
ABSTRACT:
Magnet apparatus for providing a magnetic field having a gradient in an operation chamber comprising a cylindrical permanent magnet surrounding an outer periphery of the operation chamber and having opposite ends and a hollow interior, and a subsidiary yoke at one of the ends, the subsidiary yoke having a cylindrical portion extending into the hollow interior. The subsidiary yoke can include a flange portion. The cylindrical portion is inserted through the flange portion and fixed thereto with bolts. The permanent magnet can be made of Ba-ferrite, Sr-ferrite or the like.
REFERENCES:
patent: 2503173 (1950-04-01), Reisner
patent: 4393333 (1983-07-01), Sakudo et al.
Aiba Shoji
Kamata Yoshio
Miyamura Masao
Tsukakoshi Osamu
Anderson Bruce C.
Berman Jack I.
Daido Tokushuko Kabushiki Kaisha
Nihon Shinku Gijutsu Kabushiki Kaisha
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