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351nm激光入射大腔靶的受激Raman散射光谱

王哲斌,  郑坚,  蒋小华,  刘慎业,  李文洪,  刘万东,  俞昌旋,  刘永刚,  张海鹰,  谭晓青,  彭晓世,  丁永坤,  郑志坚

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文章导航 > 强激光与粒子束  > 2004 >  16(01): 0-
王哲斌, 郑坚, 蒋小华, 等. 351nm激光入射大腔靶的受激Raman散射光谱[J]. 强激光与粒子束, 2004, 16(01).
引用本文: 王哲斌, 郑坚, 蒋小华, 等. 351nm激光入射大腔靶的受激Raman散射光谱[J]. 强激光与粒子束, 2004, 16(01).
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wang zhe bin, zheng jian, jiang xiao hua, et al. Stimulated Raman scattering from holraum irradiated with 351nm laser light[J]. High Power Laser and Particle Beams, 2004, 16.
Citation: wang zhe bin, zheng jian, jiang xiao hua, et al. Stimulated Raman scattering from holraum irradiated with 351nm laser light[J]. High Power Laser and Particle Beams, 2004, 16.
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351nm激光入射大腔靶的受激Raman散射光谱

  • 1.

    中国科学技术大学 近代物理系,安徽 合肥 230027;

  • 2.

    中国工程物理研究院 激光聚变研究中心,四川 绵阳 621 900

Stimulated Raman scattering from holraum irradiated with 351nm laser light

  • 1.

    Department of Modern Physics,University of Science and Technology of China,Hefei 230027,China;

  • 2.

    Research Center of Laser Fusion,CAEP,Mianyang 621900,China

    摘要
  • 摘要: 报道了“神光Ⅱ”装置上Au大柱腔靶产生的受激Raman散射光谱。通过分析实验条件和测量结果，排除了散射光谱来自增强非相干Thomson散射的可能性，发现用丝化不稳定性与受激Raman散射的耦合能合理解释观测到的Raman光谱。考虑到丝化不稳定性与SRS的耦合，测量到的散射光谱依然能用于密度诊断，其结果与对流SRS理论的计算值相差不到10%。
    Abstract: Timeresolved and timeintegrated stimulated Raman scattering (SRS) spectra from gold hohlraum irradiated with 351nm laser light are measured. The experimental results are inconsistent with the prediction of the convective SRS theory and enhanced incoherent Thomson scattering model. The analyses show that the prediction of SRS in filaments agrees reasonably with the experimental results. Based on the model of the coupling between filaments and SRS, the method of diagnosing plasma density with SRS spectrum was developed. The calculated result shows that the difference between the model and the convective SRS theory is less than 10%, which agrees with the conclusion made by Afsharrad［Phys. Fluids B 4,1301(1992)］.
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  • 刊出日期:  2004-01-15

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