FIELD DISTRIBUTION OF A CYLINDER-SHAPED TYPE-II SUPERCONDUCTOR WITH LIMITED AXIAL LENGTH

The self-field effects (B) over right arrow' of bulk magnetization cur rent are considered when the applied field (B) over right arrow(a) is parallel to the rotation axis of a cylinder-shaped type-II superconduc tor with limited axial length L and radius R, and by using finite-elem ent analysis in a self-consistent way, the field-dependent magnetizati on current density function J(m)(/B/) [(B) over right arrow(rho, z) = (B) over right arrow(a) + (B) over right arrow'(rho, z)], the current density, and the field distributions are derived from magnetic moment hysteresis loop m(B-a) for the superconductor with full field penetrat ion. When B-a much greater than B-p, the average field inside the cyli nder [B] = mu(0)[H-a + f(c)(L/2R)M] in the Bean model approximation, a nd the function f(c)(L/2R) is quantitively given for arbitrary paramet er L/2R, where B-a = mu(0)H(a) and M = m/(pi (RL)-L-2). In addition, t he influences of the self-field on the measured m(B-a) loop are discus sed.