Sometimes, research in main stream science can inform how LENR works. https://phys.org/news/2019-03-liquid-metal-plasma.html
also see Breakdown of Fermi degeneracy in the simplest liquid metal https://www.researchgate.net/publication/330775614_Breakdown_of_Fermi_degeneracy_in_the_simplest_liquid_metal This research into ultra dense deuterium is revealing in the way the LENR active agent behaves when used in a plasma. Compressed hydrogen enters a metalized quantum mechanical state that is preserved through extremely high temperatures. This behavior most likely includes superconductivity. During the compression produced through the use of an optical shockwave, the deuterium's optical properties is maintained up to a minimum temperature of 90,000 degrees Fahrenheit whereupon as temperatures increase beyond this point, its quantum nature begins to deteriorate. The reflectivity of the hydrogen quantum fluid is the mechanism used on this experiment whereby the polaritons can form the LENR active plasmoid structure in the electron quantum layer covering the positive core. The polaritons form within the optical mirror that the coherent quantum nature of the deuterium generates. Above 90,000 degrees Fahrenheit, this LENR active behavior begins to deteriorate. The polariton cover begins to weaken. One important implication of this behavior is that any metal that is highly compressed will support the LENR reaction. For instance. in the Proton 21 experiment, copper demonstrates LENR activity when highly compressed through the use of a shock-wave that compresses the copper by the initiation of a powerful electric arc.
