Direct electric power input to a pellet may prove to be the simplest method of compression in inertial confinement fusion. One of the crucial questions about this method, however, is how much power can be transported to the pellet through a slender self-magnetically insulated transmission line (MITL) without a large loss. Experimental results show that the transport efficiency of pulse power is determined by the gap closure time caused by plasma expansion from the anode and the cathode surface of the slender MITL. This implies that a shorter voltage pulse width (10∼20 ns) is required for a gap length of a few millimeters to attain a high transport efficiency.
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Sato et al. (1986) studied this question.
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