Determination of the hohlraum M-band fraction by a shock-wave technique on the SGIII-prototype laser facility.
Determination of the hohlraum M-band fraction by a shock-wave technique on the SGIII-prototype laser facility.
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DOI：
10.1103/physrevlett.109.145004
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发表时间：
2012-10
影响因子：
8.6
通讯作者：
W. Huo;K. Lan;Yongsheng Li;Dong Yang;Sanwei Li;Xin Li;Changshu Wu;G. Ren;Yiqing Zhao
中科院分区：
文献类型：
--
作者：
W. Huo;K. Lan;Yongsheng Li;Dong Yang;Sanwei Li;Xin Li;Changshu Wu;G. Ren;Yiqing Zhao
提出了用激波速度测量技术同时测定黑腔峰值辐射温度T（R）和M带分数f（M）的方案[Y。S. Li等人，Phys.Plasmas 18，022701（2011）]在SGIII原型激光设备上进行的最近实验中首次得到证明。在实验中，T（R）和f（M）是由Al和Ti中观察到的激波速度确定的。对于实验中使用的Au黑腔，在1 ns 2 kJ的激光脉冲下，T（R）约为160 eV，f（M）约为4.3%。该方法的结果与宽带X射线光谱仪的结果是互补的，该技术可进一步用于确定点火黑腔内部的T（R）和f（M）。
The proposal of simultaneously determining the hohlraum peak radiation temperature T(R) and M-band fraction f(M) by shock velocity measurement technique [Y. S. Li et al. Phys. Plasmas 18, 022701 (2011)] is demonstrated for the first time in recent experiments conducted on SGIII-prototype laser facility. In the experiments, T(R) and f(M) are determined by using the observed shock velocities in Al and Ti. For the Au hohlraum used in the experiments, T(R) is about 160 eV and f(M) is around 4.3% under a 1 ns laser pulse of 2 kJ. The results from this method are complementary to those from the broadband x-ray spectrometer, and the technique can be further used to determine T(R) and f(M) inside an ignition hohlraum.