Experimental Comparison of Radiative Characteristics and Implosion Dynamics of Planar Foils and Single Planar Wire Arrays in Current Region 0.9-1.6 MA on the UNR Zebra generator*

Foil liners are good objects for the investigation of dissipation mechanism of magnetic energy and as possible alternative loads for wire-arrays at multi-MA generators. Performance of Al planar foils was compared with single planar wire-arrays (SPWAs) in 0.9 -- 1.6 MA current region. Using time-gated and time-integrated x-ray, optical and laser diagnostics, the implosion dynamics and radiative characteristics are studied from current start to pinch stagnation. Foils radiate at 80{\%} of the total yield and power of SPWAs. Moreover, anisotropic emission from planar foils was observed similar to SPWAs [V. Kantsyrev \textit{et al}., Bull. Amer. Phys. Soc., v. 55, 244 (2010)]: the total yield registered orthogonally to the foil plane was higher than along the plane. Possible magnetic energy dissipation mechanism, numerical modeling and future experiments will be discussed. *This work was supported by NNSA under DOE Cooperative Agreements DE-FC52-06NA27586, DE-FC52-06NA27588, and in part by DE-FC52-06NA27616.