Influence of crystal structures on electron screening
EPJ Web of Conferences 275, 01007 (2023)
I don't know if I've misread this paper, but I can't see anything about running control experiments by bombarding equivalent foils that have not been loaded with D, or by using foils loaded with 1H.
How do they know that the 20F hasn't simply stolen a spallation neutron from one of the metal atoms?