X-pinch experiments on 1-MA "qiangGuang-1" facility

The results of an experimental investigation of X-pinch performance on the 1-MA "QiangGuang-1" facility are presented. "QiangGuang-1" is a linear-transformer-driver-based low-impedance pulsed power machine which provides a peak current of 0.9-1.3MAand a 10%-90% rise time of 50-60 ns.X-pinch loads with 2-32 wires of different wire materials (Al, W, and Mo) with wire diameters from 25 to 100 μ m have been tested. The number and size of bright spots, timing of the first X-ray burst, X-pinch dynamics, and X-ray spectroscopy have been studied using a set of diagnostics with spatial and/or temporal resolution. A single bright spot obtained from a 30 × 25 μ m W X-pinch produced 42 J (35 GW) in the 1-10-keV energy range. The smallest bright spot size (radiating > 1.2 keV) observed was about 70 μm. Linear relations between the timing of the first X-ray burst and the wire parameters (diameter and number) inWX-pinches were observed. A spatially large extreme ultraviolet plasma radiation region at the crossing point was typically observed. Al X-pinch plasma parameters were estimated from X-ray spectroscopy.