| 激光核聚变中自生磁场与热输运的粒子模拟 |
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| 引用本文： | 帕尔哈提·吐尼亚孜,阿不都热苏力·阿不都热西提,帕力哈提·米吉提.激光核聚变中自生磁场与热输运的粒子模拟[J].激光与光电子学进展,2012(7):117-122. |
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| 作者姓名： | 帕尔哈提·吐尼亚孜 阿不都热苏力·阿不都热西提 帕力哈提·米吉提 |
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| 作者单位： | 新疆大学物理科学与技术学院 |
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| 基金项目： | 国家自然科学基金(10965008,11164030);新疆大学博士科研启动基金(BS090115)资助课题 |
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| 摘 要： | 利用相对论电磁粒子模拟程序研究了超强激光与等离子体相互作用过程中产生的自生磁场和电子热输运特性。讨论了自生磁场产生机制和非线性饱和过程。给出了自生磁场的线性增长率和各向异性参数之间的函数关系,用Spitzer-Harm理论分析了电子热传导中能量的运输情况,观察到由激光的非等方加热引起的电子纵向加热现象。细致研究这些过程对更好的理解快点火物理中自生磁场的产生、超热电子热输运等过程有重要意义。
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| 关 键 词： | 激光光学 激光惯性约束聚变 快点火 超强激光脉冲 Weibel不稳定性 粒子模拟法 饱和自生磁场 |
Particle-in-Cell of Self-Generated Magnetic Fields and Thermal Transport in Laser Inertial Fusion |
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| Institution: | P.Tuniyazi A.Abudurexiti P.Mejid (School of Physics and Technology,Xinjiang University,Urumqi,Xinjiang 830046,China) |
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| Abstract: | Stimulated self-generated magnetic field and electron thermal transport properties in ultraintense laser-plasma interactions are studied by using electromagnetic relativistic particle-in-cell simulation program.The generation mechanism of spontaneons magnetic and nonlinear saturation process are discussed.Functional relation between linear growth rate of spontaneons magnetic and anisotropic parameters is provided.The state of transport of energy in the heat exchange with electron is analyzed by the Spitzer-Harm theory,and electron ′ s vertical pyrogenation phenomenon resulting from anisotropic heating of laser is observed.The results may be important for understanding the spontaneous magnetic field generation and fast electron propagation in fast iginition physics. |
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| Keywords: | laser optics inertially confined fusion fast ignition ultraintense laser pulses Weibel instability particle-in-cell method saturated self-generated magnetic fields |
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