Abstract
The possibility of volume ignition of proton–lithium (p–7Li) with negligible radioactivity has encouraged us to study the fusion of compressed solid state p–7Li fuel. It is shown that volume ignition of p–7Li reaction happens at compressions one hundred times more than that of deuterium–tritium (D–T) reaction. This may lead to densities higher than 105 times the solid-state density. In this paper, updated cross sections of the fusion reaction are included. The optimum gain is analyzed and retrograde behavior gains are investigated. Similar to hydrogen–boron (p–11B) fuel, threshold energy required for igniting this fuel is within the range of giga joule (GJ). But due to higher energy of alpha particles, retrograde behavior of p–7Li is weaker in comparison with p–11B.
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