Gas‐filled targets for large scale‐length plasma interaction experiments on Nova
Gas‐filled targets for large scale‐length plasma interaction experiments on Nova
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DOI：
10.1063/1.871208
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发表时间：
1995-06
影响因子：
2.2
通讯作者：
L. Powers;R. Berger;R. Kauffman;B. MacGowan;P. Amendt;C. Back;T. Bernat;S. Dixit;D. Eimerl;K. Estabrook;J. Harte;D. Kalantar;D. Klem;B. Lasinski;D. Montgomery;J. Moody;D. Munro;T. Shepard;L. Suter;R. Turner;E. Williams;Juan C Fernández;W. Hsing;B. Wilde;B. Failor
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文献类型：
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作者：
L. Powers;R. Berger;R. Kauffman;B. MacGowan;P. Amendt;C. Back;T. Bernat;S. Dixit;D. Eimerl;K. Estabrook;J. Harte;D. Kalantar;D. Klem;B. Lasinski;D. Montgomery;J. Moody;D. Munro;T. Shepard;L. Suter;R. Turner;E. Williams;Juan C Fernández;W. Hsing;B. Wilde;B. Failor
在Nova激光器上测量了大尺度充气靶的受激布里渊后向散射。这些目标被设计为近似条件下的间接驱动点火目标设计在欠密等离子体电子密度（ne = 1021/cm 3），温度（Te = 3 keV），和梯度尺度长度（Ln = 2 mm，Lv = 6 mm），以及受激布里渊散射（SBS）的计算增益。这些实验中使用的目标是具有聚酰亚胺壁的充气气球（气囊）和充气空腔。使用X射线成像和X射线和光谱学进行的详细表征验证了计算的等离子体条件的实现。在类似于点火目标设计的条件下，这些目标的时间分辨SBS后向散射<3%。
Stimulated Brillouin backscatter from large scale‐length gas‐filled targets has been measured on the Nova laser. These targets were designed to approximate conditions in indirect drive ignition target designs in underdense plasma electron density (ne∼1021/cm3), temperature (Te≳3 keV), and gradient scale lengths (Ln∼2 mm, Lv≳6 mm) as well as calculated gain for stimulated Brillouin scattering (SBS). The targets used in these experiments were gas‐filled balloons with polyimide walls (gasbags) and gas‐filled hohlraums. Detailed characterization using x‐ray imaging and x‐ray and optical spectroscopy verifies that the calculated plasma conditions are achieved. Time‐resolved SBS backscatter from these targets is <3% for conditions similar to ignition target designs.