Abstract
In laser-fusion experiments, it is important to maintain a uniformity of implosion. A magnetically suspended pellet (MSP) has been studied to provide a contact-free fuel pellet at the firing position. It is suspended against the gravitational force by an electromagnet in which the current is controlled in response to the positionvelocity of the MSP. In the present study, the magnetic shape coefficient Km and specific permeability μm are determined from an analysis of the vertical dynamic motion.