“阳”加速器上的Z箍缩诊断技术

Diagnostics on Yang accelerator for Z-pinch experiment

概述了为开展Z箍缩实验物理研究而建立的一些诊断技术和方法。这些诊断技术已成功应用于"阳"加速器(负载电流1.2 MA,上升时间85 ns)喷气和丝阵Z箍缩物理研究中,其中软X光8通道Dante谱仪和软X光闪烁体功率计主要用于软X光能段的辐射功率、能量和低能辐射能谱测量;椭圆弯晶谱仪、凸圆柱晶体谱仪和透射光栅谱主要用于X光辐射线谱和连续谱的测量,以获取等离子体密度、电子和离子温度等信息;X光八分幅针孔相机、分能段6通道X光掠入射针孔积分相机和激光差分干涉测量系统主要用于研究Z箍缩内爆动力学过程及等离子体参数等,并给出了这些诊断系统获取的典型实验结果,包括X光辐射功率、辐射能谱、等离子体内爆图像和密度分布等。

This paper describes the diagnostics developed in recent years for gas-puff and wire array Z-pinch experiments performed on Yang accelerator（peak current 1.2 MA,rise time 85 ns）.An eight-channel Dante spectrometer and a scintillator X-ray power meter were used to measure the radiation power,energy and sub-keV power spectra of soft X-ray.Two crystal spectrometers（elliptically and convex cylindrically curved） were employed to obtain the plasma parameters from the line spectra in keV range.A transmission grating spectrometer was fabricated to measure the soft X-ray spectra in sub-keV range.An X-ray framing camera,a multi-channel grazing incidence pinhole X-ray camera and a laser differential interferometer were used to obtain the image and electron density of the imploding plasmas.Typical experimental results obtained by these diagnostics,such as X-ray power,X-ray spectra,and both time resolved and time integrated images of the Z-pinch imploding plasmas were briefly discussed.