The study of three-dimensional compression of wire arrays at the angara-5-1 facility

Abstract

Implosion of quasi-spherical wire arrays opens the possibility of more efficient use of the kinetic energy of the material being compressed to create a source of soft X-rays (SXR), compared to two-dimensional compression in the case of a cylindrical wire array. This is due to the contribution of the kinetic energy of the axial movement of the plasma into the internal energy of SXR source. The purpose of the experiments was to achieve threedimensional synchronous compression of the plasma in the geometric center of a quasi-spherical array. For the optimal linear mass profile (ml(θ) = mfsinθ), it follows from the measured distribution of the azimuthal magnetic field that, in the stage of plasma production up to the SXR pulse, the plasma with the frozen-in magnetic field penetrates the array from the polar and equatorial regions almost synchronously. The size and shape of the X-ray radiation source in quasi-spherical current implosion were inferred from plasma emission spectrum measurement with spatial resolution and registration of framing X-ray images. Estimation of the radiation flux on the surface of such a source was received.