As it turned out, the new experimental results showed that, at 10 K, hydrogen atoms diffuse 100 times faster than deuterium ions on a highly ordered type of ice called polycrystalline ice. The researchers concluded that this larger-than-expected kinetic isotope effect can only be explained by quantum tunneling.
Read more at:
http://phys.org/news/2015-10-quantum...s-ice.html#jCp
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Sorry, aber in finde das alles nur verwirrend. Vielleicht der richtige Einstieg für weitere Kommentare.