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J. Appl. Phys. 30, 342 (1959); http://dx.doi.org/10.1063/1.1735165 (8 pages)

Electrodynamic Containment of Charged Particles

R. F. Wuerker, H. Shelton, and R. V. Langmuir

Ramo‐Wooldridge Research Laboratory, Los Angeles 45, California

(Received 1 August 1958)

Electrically charged iron and aluminum particles having diameters of a few microns have been contained in a confined region of space by means of alternating and static electric fields. The theory is essentially that of alternating gradient focusing; here the motion is governed by Mathieu's equation. Under certain circumstances when many particles are confined the three dimensional focusing force and the Coulomb repulsion results in a ``crystaline'' array which can be ``melted'' and reformed.

© 1959 The American Institute of Physics

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0021-8979 (print)  
1089-7550 (online)

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