X射线辐射在双孔柱腔靶中传输实验研究

在“星光Ⅱ”装置上,采用双孔柱腔靶研究辐射在空腔中轴向传输变化特性.提出“漏水管”辐射输运的简化模型,用来分析X射线在空腔中的传输的实验结果。分析结果表明,简化模型与实验结果基本相符.X射线输运的结果是输运末端的X射线减弱,辐射持续的时间增大,等离子体弛豫时间增大关键词：双孔柱腔靶 辐射传输 “漏水管”模型

Experimental investigation on X-ray radiation transport along cylindrical cavity target with double diagnostic holes

The cylindrical cavity target with double diagnostic holes was used to investigate the properties of X ray radiation transport along axis of the empty cavity. The simple radiation transport model of `leakage pipe' was put forward and was used to analyze the experimental results of radiation transport in the empty cavity. The analysis showed that the simple model of radiation transport agreed basicaly with the experimental results. The measurements using soft X ray spectrometers (dante) and X ray streaked cameras indicated that at the end of the transportation, the X ray radiation is attenuated, radiation time and relaxation time of the plasma were much longer than those at the entrance.