Extended Data Fig. 1: Experimental confirmation of fusion occurring within the lattice of the metal target.
From: Electrochemical loading enhances deuterium fusion rates in a metal target

Neutron production rates were observed when the sheath voltage of the reactor was cycled on and off during a beam-loading experiment. During the 10-min ‘on’ periods, the sheath voltage accelerated D+ into the palladium target. During the 5-min ‘off’ periods, the sheath voltage was turned off, effectively stopping the D+ ions from being implanted into the palladium target. The highest neutron production rate during this experiment was 188(2) n s−1.