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碰撞对受激Raman散射的影响
The effect of collision on stimulated Raman scattering
【摘要】 从动力学方程出发 ,引入有效碰撞 ,讨论了碰撞对受激Raman散射线性增长率的影响 .结果表明 ,碰撞阻尼和Landau阻尼使得受激Raman散射线性增长率有了实质性的下降 ,受激Raman散射只能发生在电子温度和电子密度平面的一个有限区域 .现在的理论模型能够解释受激Raman散射光谱上存在的“缝”(gap)现象 .
【Abstract】 Starting from kinetic equations,we discussed stimulated Raman scattering(SRS)by including both Landau damping(LD) and the collisional damping(CD).It was found t hat the linear growth rate of SRS is reduced substantially due to LD and CD.SRS can occur only for a region determined by both electron temperature and density. Gap in the spectrum corresponding to Raman scattering can be explained by the pr esent model.
【关键词】 受激Raman散射;
碰撞阻尼;
线性增长率;
【Key words】 stimulated Raman scattering; collisiona l damping; linear growth rate;
【Key words】 stimulated Raman scattering; collisiona l damping; linear growth rate;
【基金】 国家高技术惯性约束聚变技术主题国家自然科学基金 (批准号 :10 1350 10 );国家重点基础研究专项经费;中国工程物理研究院基金资助的课题~~
- 【文献出处】 物理学报 ,Acta Physica Sinica , 编辑部邮箱 ,2003年10期
- 【分类号】O437.3
- 【被引频次】4
- 【下载频次】44