Understanding the scaling relationship between magneto-Rayleigh-Taylor instability (MRTI) growth and current rise time is critical for optimizing z-pinch dynamic hohlraum-driven inertial confinement fusion (ICF). Previous theoretical work by Wang et al. demonstrated that under conditions of constant implosion velocity in Z-pinch plasmas, the perturbation amplitude of MRTI prior to stagnation exhibits linear dependence on current rise time. To experimentally validate this scaling law, we conducted three distinct wire-array Z-pinch experiments on an 8 MA pulsed power generator, maintaining comparable implosion dynamics while systematically extending the current rise time. Through precise control of the synchronization of the generator's 24 modules, we achieved for the first time scaled wire-array implosions with current rise times increased by a factor of three. Experimental diagnostics, including time-resolved X-ray power emission and plasma self-emission imaging, were combined with magnetohydrodynamic simulations to quantify MRTI development. Both experimental observations and numerical results confirm a linear enhancement of MRTI perturbations with prolonged current rise time, in quantitative agreement with theoretical predictions. This work establishes crucial experimental verification of MRTI scaling behavior under controlled current temporal profiles, providing critical insights for hohlraum design in Z-pinch ICF applications.

magneto-Rayleigh-Taylor instability,Fast Z-pinch,Current rise time,Z-pinch ICF