Fusion Utility in the Knudsen Layer
Authors: Seth Davidovits, and Nathaniel J. Fisch
Abstract: In inertial con nement fusion, the loss of fast ions from the edge of the fusing hot-spot region reduces the reactivity below its Maxwellian value. The loss of fast ions may be pronounced because of the long mean free paths of fast ions, compared to those of thermal ions. We introduce a fusion utility function to demonstrate essential features of this Knudsen layer e ect, in both magnetized and unmagnetized cases. The fusion utility concept is also used to evaluate restoring the reactivity in the Knudsen layer by manipulating fast ions in phase space using waves.
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Published in: Phys. Plasmas 21, 092114 (2014)
http://dx.doi.org/10.1063/1.4895477
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