7th International Conference on Matter and Radiation at Extremes (ICMRE2024)

Investigation of powerful fluxes of soft-X-ray radiation (SXR) at the implosion of multi-wire cylindrical arrays has been carried out in RFNC-VNIIEF for many years. The arrays are powered from laboratory and explosive current sources.
The investigation results of aluminum K-line radiation at the implosion of a multi-wire array are provided in the paper. The array is powered from an explosive-magnetic generator (EMG) with a helix diameter of 200 mm equipped by an explosive opening switch.
A cylindrical multi-wire array was used in the experiments. Its height was 14.5-14.7 mm, its diameter was 120 mm, and it consisted of 60-120 aluminum wires of 15.5-19 µm diameters. 
Induction and Faraday fiber-optic techniques were used to define parameters of current pulses. Spectral-time parameters of an SXR pulse generated by a Z-pinch were recorded by scintillation detectors and vacuum X-ray diodes with different filters. Integral in time SXR energy in different spectrum ranges was measured by bolometers. Streak cameras with pinholes and special X-ray methods were used to record space-time implosion characteristics of a plasma Z-pinch in optical and X-ray ranges of the spectrum.
The current pulse in the load in the best experiment had the amplitude of ~ 5 MA with the rise-time of τ_0.1-0.9 = 0.39 µs. A FWHM of the recorded SXR pulse was 13 ns in the spectrum range with quantum energy of more than 1 keV, and it was 21-25 ns in the spectrum range with quantum energy of less than 1 keV, and it was 19 ns according to the streak camera data.
SXR pulse energy measured by a bolometric method was 71 kJ in the total range, and 23±2kJ in the range of quantum energy of more than 1 keV.
RMHD codes FLUX-3D and FLUX-rz were used as simulating maintenance of performed experiments.
 

Z-pinch,soft-X-ray,explosive magnetic generator,radiation magnetohydrodynamics