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X光照相技术应用于果冻内爆实验的研究
引用本文:钟杰,叶雁,黄文斌,刘振清,钱伟新,李作友,朱鹏飞,王婉丽,张振涛,王晓.X光照相技术应用于果冻内爆实验的研究[J].强激光与粒子束,2014,26(3):034002-219.
作者姓名:钟杰  叶雁  黄文斌  刘振清  钱伟新  李作友  朱鹏飞  王婉丽  张振涛  王晓
作者单位:1.中国工程物理研究院 流体物理研究所, 四川 绵阳 621 999
基金项目:国家自然科学基金项目(11202194); 国防科技基础研究项目
摘    要:果冻内爆实验是一种研究柱形汇聚条件下Rayleigh-Taylor不稳定性的实验方法,由于高速摄影图像不能分辨反弹阶段果冻内界面的扰动,因此采用中低能X光照相CCD相机接收技术开展果冻与气体混合区域的实验研究,获得了果冻环在不同时刻压缩、反弹的发展状况及其内外边界,并观测到果冻质量分数降低时果冻与气体混合界面的变化。实验结果表明:X光照相可作为测量湍流混合区域的半定量测试技术,有助于研究果冻内爆中的气液界面Rayleigh-Taylor不稳定性现象。

关 键 词:X光照相    果冻内爆实验技术    Rayleigh-Taylor不稳定性    湍流混合区域
收稿时间:2013/7/16

Experimental research on implosion of gelatin-ring using X-ray radiography
Institution:1.Institute of Fluid Physics,CAEP,P.O.Box 919-109,Mianyang 621999,China
Abstract:Gelatin-ring experiment is a technique of studying Rayleigh-Taylor instability growth in a cylindrically convergent geometry. The customary measurement is the high-speed photography which is difficult to distinguish the turbulent mixing zone (TMZ). Therefore, the low and middle energy X-ray radiography system was conducted using the commercial flash X-ray tube and home-made camera. The evolutions of the gelatin-rings inner and outer surfaces were clearly observed by X-ray radiography in different time and gelatins concentration,including rebound of inner surface and turbulent mixing. The experimental results show that the process of the gelatin-rings TMZ can be distinguished by X-ray radiography. Therefore, X-ray radiography is an effective diagnostic in the gelatin-ring implosion experiment.
Keywords:X-ray radiography  gelatin implosion technique  Rayleigh-Taylor instability  turbulent mixing zone
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