loss cone

loss cone

[′lȯs ‚kōn]
(plasma physics)
A cone in the velocity space of particles in a plasma confined by magnetic mirrors; particles with velocities in the cone are not trapped by the mirrors and are lost out of the system.
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References in periodicals archive ?
It is long enough to avoid both "bad curvature" and the "loss cone" effect, which also lets ions wander out, said William Emrich, lead engineer on the project at NASA's Marshall Space Flight Center.