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CFDietCoke t1_j1v83xb wrote

Reply to comment by reb390 in ELI5 what would energy from nuclear fusion mean for humanity? by odyssey92

> . Fusion however, if fully realized in its most ideal form, would allow us essentially turn seawater into fuel

Incorrect. Seawater is not H3 and cannot be fused.

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reb390 t1_j1vajxr wrote

Seawater contains Deuterium (D) which can be used in a full cycle fusion reactor. Basically D+D creates either Tritium (T) + H or He3+ a neutron. Those products can then react with one another. The easiest reaction to do is D+T since it requires the lowest temperautures but Tritium needs to be manufactured which can be difficult.

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