Progress toward x-ray Thomson scattering of warm dense matter on the Z accelerator

被引:2
作者
Ao, T. [1 ]
Harding, E. C. [1 ]
Bailey, J. E. [1 ]
Desjarlais, M. P. [1 ]
Hansen, S. B. [1 ]
Lemke, R. W. [1 ]
Rochau, G. A. [1 ]
Sinars, D. B. [1 ]
Smith, I. C. [1 ]
Geissel, M. [1 ]
Reneker, J. [1 ]
Kernaghan, M. D. [1 ]
Mix, L. P. [1 ]
Wenger, D. F. [1 ]
机构
[1] Sandia Natl Labs, Albuquerque, NM 87185 USA
来源
18TH APS-SCCM AND 24TH AIRAPT, PTS 1-19 | 2014年 / 500卷
关键词
D O I
10.1088/1742-6596/500/8/082001
中图分类号
O59 [应用物理学];
学科分类号
摘要
Experiments on the Z accelerator have demonstrated the ability to produce warm dense matter (WDM) states with unprecedented uniformity, duration, and size. Significant progress to combine x-ray Thomson scattering (XRTS), a powerful diagnostic for WDM, with the unique environments created at Z has been accomplished. The large current of Z is used to magnetically launch Al flyers to impact CH2 foam (0.12 g/cm(3)) samples. The uniformlyshocked CH2 foam volume is about 10 mm3 and the steady shock state lasts up to about 100 ns, which are approximately 1000 & 100 times larger, respectively, than typical laser shocked samples. The Z-Beamlet laser irradiates a 5,u,m thick Mn foil near the load to generate 6.181 keV Mn-He-c x x-rays that penetrate into the CH2 foam and scatter from it. A high sensitivity x-ray scattering spherical spectrometer with both high spatial and spectral resolution is fielded, which enables benchmark quality data by simultaneously measuring x-rays scattered from shocked and ambient regions of the CH2 foam, and the Mn x-ray source. Experimental efforts have achieved low x-ray background and mitigation of load debris, and measured high quality XRTS data of ambient CH2 foam have validated the technique.
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