for scene 30 of the video " Energy Forever - 2 Fusion and Biofuels" by Rolf Witzsche - Ice Age Ahead not Global
here for a larger image
The neutron-heavy deuterium-tritium fuel
The entire concept will remain a dream forever, because even if all the technical barriers against the power-production process could be overcome by some magic, the key element in the process, which is its fuel cycle, makes the concept ultimately an impossible dream.
The entire nuclear-fusion power development project is built on the neutron-heavy deuterium-tritium fuel. This neutron-heavy fuel is the only fuel that can be made to fuse with a reasonable amount of energy input.
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Published by Cygni Communications Ltd.
North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F.