Plasma mass separator using ponderomotive forces
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United States of America Patent
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Jul 1, 2003
Grant Date -
N/A
app pub date -
Feb 28, 2002
filing date -
Feb 28, 2002
priority date (Note) -
Expired
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Abstract
A device for separating high-mass ions (having cyclotron frequency .OMEGA..sub.h) from low-mass ions (having cyclotron frequency .OMEGA..sub.l) in a plasma includes a chamber. Coils are provided to generate a substantially uniform magnetic field in the chamber. An antenna is provided to launch a left-hand elliptically polarized electromagnetic wave into the chamber along the stationary magnetic field that is evanescent in the multi-species plasma. Importantly, the E vector of the elliptically polarized electromagnetic wave rotates at a frequency, .omega., where .OMEGA..sub.h <.omega.<.OMEGA..sub.l. Ponderomotive forces are generated by the electromagnetic wave that cause the low-mass ions to move toward the antenna while causing the high-mass ions to move away from the antenna.
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