A lot of news come these days about metallic hydrogen and its possibility of releasing 20 times more energy than just oxygen-hydrogen reaction. Like here: https://www.nasa.gov/pdf/637123main_Silvera_Presentation.pdf
But what if we use metallic deuterium or tritium (especially, tritium)? Would they release more energy and, therefore, be more efficient fuel than even metallic hydrogen? (the means of compression are out of topic)
Or maybe metallic deuterium\metallic tritium fission would give more energy (than fission of normal ones)? - OK, made a mistake here: fusion, sure (edit). (This part got answer and is clear now, but question about metallic tritium in comparison to metallic protium still remains open)
Can somebody help with this, please?