Zheng Wu-Di

2D hydrodynamic simulation of a line-focused plasma in Ni-like Ag x-ray laser research ∗

In most collisional schemes of x-ray laser (XRL) experiments, a bow-like intensity distribution of XRL is often observed, and it is generally ascribed to the two-dimensional hydrodynamic behaviour of expanding plasma. In order to better understand its essence in physics, a newly developed two-dimensional non-equilibrium radiation hydrodynamic code XRL2D is used to simulate a quasi-steady state Ni-like Ag XRL experiment on ShenGuang-II facility. The simulation results show that the bow-like distribution of Ni-like ions caused by over-ionization in the central area of plasma is responsible for the bow-like shape of the XRL intensity distribution observed.

Experimental Diagnosis of Plasma Jets by Using X-Ray Laser

The supersonic jets and the interaction of strong shock waves are ubiquitous features of the nonlinear hydrodynamics of inertial-confinement fusion, astrophysics, and related fields of high energy-density science, so it is very important of laboratory studies on it. In this paper, a laboratory experimental study is reported. The jets were created by a ns laser pulse irradiating a specific target, and the shadow of jets were measured by an x-ray laser probe with wavelength of 13.9nm. The legible images of jets were recorded, and the experimental results and theory simulation were qualitative agreement.