Electric lamp and discharge devices – Fluent material supply or flow directing means – Plasma
Patent
1973-11-26
1977-03-01
Grimm, Siegfried H.
Electric lamp and discharge devices
Fluent material supply or flow directing means
Plasma
176 1, 176 8, 310 11, 313361, 313161, 3151116, 3151117, H01J 334, H05H 110, H05H 112
Patent
active
040103960
ABSTRACT:
Charged particles are entrained on a straight or curved path by a traveling magnetic field moving along that path with its magnetic flux vector transverse thereto. The general direction of entrainment is the same for particles of either polarity. The initial relative velocity between the traveling field and the particle drives the latter into motions along a quasi-cycloidal trajectory in the direction of field travel at an average particle speed nearly equal to the field velocity. Streams of charged particles may be accelerated into streams separated from any material objects such as vessel walls, magnetic structures, electrodes, etc. This confinement is achieved predominantly by the balanced interaction of the forces exerted on the particles by the traveling magnetic field and their inertial forces. Auxiliary confining fields may be applied for redirecting to the main stream any particles scattered by secondary effects. The traveling field may be generated by a group of electromagnets, with or without cores, spaced along the path and excited in staggered phase relationship; by an angular offsetting of the polar axes of adjoining electromagnets, the quasi-cycloidal trajectories may be twisted into spacial curves designed to keep the particle stream within preselected boundaries without the need for separate magnetic focussing fields. Periodic reversals of the travel direction of the magnetic field result in reciprocation of the particle streams for inducing collisions between oppositely moving particle streams in adjoining sections. Laminar particle flow is produced by providing a concentrated charged particle source emitting bursts of said particles in a preselected phase relationship to the traveling magnetic field. The quasi-cycloidal trajectories may be substantially straightened or otherwise modified by the application of specially shaped pole pieces.
REFERENCES:
patent: 2658999 (1953-11-01), Farly
patent: 2790902 (1957-04-01), Wright
patent: 2890348 (1959-06-01), Ohkawa
patent: 2979635 (1961-04-01), Burleigh
patent: 3324325 (1967-06-01), Briggs
patent: 3344357 (1967-09-01), Blewett
patent: 3459988 (1969-08-01), Russell
patent: 3719554 (1973-03-01), Cole
patent: 3794927 (1974-02-01), Fleischer et al.
Nolde George V.
Ress Thomas I.
Grimm Siegfried H.
Kreidl Chemico Physical K.G.
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