| 激光等离子体相互作用中自生磁场及其空间演化 |
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| 引用本文： | 帕尔哈提·吐尼亚孜,阿不都热苏力,阿布都外力.激光等离子体相互作用中自生磁场及其空间演化[J].光学与光电技术,2013(4):20-24. |
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| 作者姓名： | 帕尔哈提·吐尼亚孜 阿不都热苏力 阿布都外力 |
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| 作者单位： | 新疆大学物理科学与技术学院,新疆乌鲁木齐830046 |
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| 基金项目： | 国家自然科学基金（10965008,11164030）资助项目 |
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| 摘 要： | 利用粒子模拟程序,模拟研究了超强激光与等离子体相互作用中的电子束流不稳定性的产生机制,得到了不稳定性所激发的自生磁场的线性增长率与各向异性参数之间的函数关系。观察到了激光与等离子体相互作用时产生的饱和自生磁场在表面领域上的演化过程,发现沿x方向出现的电流比较大时,饱和自生的磁场在z方向的发展比较快,临界面附近较大,但随着深度的增加,逐渐以指数形式减少。
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| 关 键 词： | 超强激光脉冲 等离子体 粒子模拟法 饱和自生磁场 |
Spatial Evolution of Electron Beam Instability in the Ultraintense Laser-Plasma Interaction |
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| Institution: | Parhat Tuniyazi Abudurusulii Abudurexiti Abuduwaili Abudukermu ( School of Physics and Technology Xinjiang University, Urumqi 830046, China ) |
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| Abstract: | Generation mechanism of electron beam instability in the ultraintense laser-plasma interactions is studied using e- lectromagnetic relativistic particle-in-cell program simulation. Functional relationship between liner growth rate of spontane- ous magnetic excited by electron beam instability and anisotropic parameters is provided. The saturated magnetic field in the skin on the field is observed. When the electric current in the x direction is larger, the magnetic field in z direction is stron- ger than other directions, and all the values get their maximum near the critical area and decrease exponentially with depth becoming larger. |
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| Keywords: | ultraintense laser pulses plasma PIC simulation saturated magnetic field |
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