Suppression of stimulated brillouin scattering by increased landau damping in multiple-ion-species hohlraum plasmas.
Suppression of stimulated brillouin scattering by increased landau damping in multiple-ion-species hohlraum plasmas.
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DOI：
10.1103/physrevlett.100.105001
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发表时间：
2008-03
影响因子：
8.6
通讯作者：
P. Neumayer;Richard Berger;L. Divol;Dustin Froula;Richard A. London;B. MacGowan;N. Meezan;J. Ross;C. Sorce;L. Suter;S. Glenzer
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文献类型：
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作者：
P. Neumayer;Richard Berger;L. Divol;Dustin Froula;Richard A. London;B. MacGowan;N. Meezan;J. Ross;C. Sorce;L. Suter;S. Glenzer
我们证明了在高电子温度惯性约束聚变黑腔中，多离子种类等离子体大大降低了受激布里渊散射（SBS）。在充有CO（2）气体的黑腔中加入氢气，可增加朗道阻尼。我们发现SBS反射率随氢气含量从18%增加到3%而单调下降，同时增加激光束的透射率。详细的模拟与3D激光等离子体相互作用的代码是一致的实验观察到的减少后向散射光。
We demonstrate that multiple-ion-species plasmas greatly reduce stimulated Brillouin scattering (SBS) in high-electron temperature inertial confinement fusion hohlraums. Landau damping is increased by adding hydrogen to a CO(2) gas filled hohlraum. We find that the SBS reflectivity decreases monotonically with increasing hydrogen fraction from 18% to 3% with a simultaneous increase of laser beam transmission. Detailed simulations with a 3D laser-plasma interaction code are in agreement with the experimentally observed reduction in backscattered light.