This post is a design suggestion for a possible improvement to the focus fusion reactor. The erosion rate of the beryllium central electrode is a limiting factor in the availability of the reactor. The reactor design should minimize frequent electrode replacement. One way to slow that erosion in the central electrode is to configure it so that the walls of the central electrode forms a heat pipe using lithium to remove heat from the hot plasma generation section at the tip of the electrode to a cold heat sink at the rear of the reactor. Such a lithium heat pipe has the heat conductivity of 1000 times that of pure copper and can remove heat at a rate of 30 kilowatts per square centimeter. Since Lithium is the most x-ray transparent solid element, it will not interfere with the x ray dynamics of the reactor. This suggestion will also function for copper electrodes.
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