Theoretical Problems Concerning Railgun Design
Author | : Richard L. Liboff |
Publisher | : |
Total Pages | : 87 |
Release | : 1986 |
Genre | : |
ISBN | : |
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Various theoretical studies associated with design and implementation of a railgun are presented. Among other items the report contains a new equation of state for a strongly coupled laboratory plasma as well as a new analytic expression for electrical conductivity for a strongly coupled plasma. A fully relativistic analysis is made of the dynamics of a rail-gun based three assumptions: (1) Ohm's law is valid in the rest frame of the plasma; (2) total electron momentum is transferred to the projectile; and (3) motion of the projectile is constrained to one direction. With these assumptions, a relativistic equation for the velocity of the projectile is obtained whose solution monotonically increases to one of two values depending on field strengths. For B> E, the maximum velocity is cE/B whereas for E> B it is c where c is the speed of light, and E and B are applied electric and magnetic fields, respectively (in cgs).