In one minute

Huke, Czerski, Heide, Ruprecht, Targosz and Żebrowski take up low-energy deuteron fusion in metals, where several groups see enhanced electron screening but with screening energies that differ widely. They present new measurements and study the processes that interfere inside irradiated targets. Surface contamination from residual gases and uneven, unstable deuteron density are key effects to control. An improved differential analysis handles these, and close scrutiny of other experiments shows their unusual yield changes come mainly from deuteron density dynamics. Comparing with theories of electron screening in metals, the Debye-Hückel model previously proposed for nuclear reactions and radioactive decays is clearly excluded.

Enhancement of deuteron-fusion reactions in metals and experimental implications