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A comment on Ultrahigh Acceleration Neutral Particle Beam-Driven Sails.

Re:Ultrahigh Acceleration Neutral Particle Beam-Driven Sails by ncmncm on Monday January 07, 2019 @03:20AM (#18843649)
Dumb question: how do you couple to a beam of neutral particles?
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Re:Ultrahigh Acceleration Neutral Particle Beam-Driven Sails by avian on Monday January 07, 2019 @04:22AM (#18843892)
From the article:

> The rapidly moving magnetic field of the Magsail, seen in the frame of the beam as an electric field, ionizes the incoming neutral beam particles. Nordley and Crowl discuss on-board lasers to ionize the incoming beam, although this adds additional on-board mass and power

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