Megajoule Source of Soft X-Ray Radiation Powered from Multi-Element Disk Magneto-Cumulative Generator

The idea of Z-pinch experiment powered from a ten-element disk magneto-cumulative generator DMCG240-10 equipped with an electric-exploded current sharpener, is presented. The generator provides a current up to 20 MA at a current rise time of ~1 mus on a liner load. The liner consists of a nested multi-wire system. The diameter of the outer cascade is 20 cm, the diameter of the inner cascade is 10 cm. The cascades are made of 720 (outer) and 360 (inner) tungsten wires of 11 mum diameter. The liner height is 25 mm. Integral yield of soft X-ray radiation at current liner implosion exceeds 1 MJ.

I. INTRODUCTION

Creation of high-power sources of x-ray radiation is urgent for a number of applications. Achieved XR energy level is ~1.8, MJ at a power of ~290 TW. Such source is realized at PBFA-Z facility [1] at a liner implosion, which is formed of a multi-wire assembly, with a current having amplitude of ~18 MA and front t~100 ns. Along with that there is an interest to the XR sources having liner implosion times of several hundreds of nanoseconds and up to ~1 µs [2], [3]. One of the reasons of such an interest is relative simplicity of megampere current pulses obtaining having microsecond current rise time and conservation of energy proportionality of generated XR to square of current in the specified implosion time range [4], [5].