Bob Higgins wrote: > Yes, the beats in the Hagelstein, Letts, and Cravens experiment are > presumably formed by this process. A thin gold film was deposited on the > cathode surface and the effect was not observed without the thin gold film. Has it been ruled out that the energy anomaly is not partly or solely due to plasmon formation alone ? > It is believed that the thin gold went down as tiny islands that were > responsible for the nonlinearity needed to form the beats. If the "islands" were in the size range of 2-12 nm, then the Casimir effect could come into play. The so-called "Wood's Anomalies" have been known for a century in various forms - and this plasmon anomaly of Hagelstein et al could be related to that.
https://www.semanticscholar.org/paper/Chapter-2-Theory-of-Wood-%E2%80%99-s-Anomalies-Maystre/406d2c8f212c3286d85774815de62a2c75b748b8 IOW there is a possibility of actual energy gain from plasmon radiation alone which may or may not also have a nuclear effect as a secondary reaction when deuterium is present.
