电磁脉冲驱动套筒内爆压缩磁化靶研究

刘斌; 李成; 王瑞星; 曹启伟; 杨显俊

doi:10.11883/bzycj-2016-0133

电磁脉冲驱动套筒内爆压缩磁化靶研究

doi: 10.11883/bzycj-2016-0133

刘斌¹,
李成²,
王瑞星¹,
曹启伟¹,
杨显俊^{2, 3, ,}

1.
中国工程物理研究院研究生院, 北京 100088
2.
中国工程物理研究院聚变能源科学技术研究中心, 北京 100088
3.
北京应用物理与计算数学研究所, 北京 100094

详细信息

作者简介:
刘斌(1991-), 男, 硕士

通讯作者:
杨显俊, yang_xianjun@iapcm.cn

中图分类号: O532.1
计量
- 文章访问数: 5276
- HTML全文浏览量: 1884
- PDF下载量: 165
- 被引次数: 0
出版历程
- 收稿日期: 2016-05-13
- 修回日期: 2016-07-08
- 刊出日期: 2018-05-25

Electromagnetic pulse driven liner implosion and compression of magnetized target

1.
The Graduate Division, China Academy of Engineering Physics, Beijing 100088, China
2.
Center for Fusion Energy Science and Technology, China Academy of Engineering Physics, Beijing 100088, China
3.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

摘要

摘要: 采用磁流体方程和有限差分法，对内爆过程中高能量密度状态下的磁场对带电粒子和压缩过程的作用机制进行研究。结果显示：内爆过程中的各项参数为电子离子温度（50 keV）、压强（1 TPa）、粒子数密度（10²⁴ cm^-3）。套筒材料对约束时间、点火条件有重要影响；同时当磁感应强度大于5 T时，电子热传导系数比无磁场时减小2个数量级，离子热传导系数也出现了明显下降，在压缩峰值处，磁感应强度超过5 T时α粒子能量沉积密度比磁感应强度为0和1 T时相对增加约200倍。磁化在一定程度上也会阻碍内爆压缩过程。
- 电磁内爆 /
- 磁化靶 /
- Z箍缩 /
- 磁流体数值模拟
Abstract: In this paper, we studied the program implosion process and the influence of the magnetic field under a high-energy density state on charged particles and the mechanism of the compression process, using the MHD equations and finite difference method. The results show that the implosion process parameters meet the following conditions:the electron temperature plasma (50 keV), the pressure (1 TPa), the particle number density (10²⁴ cm^-3). The liner material had a major influence on the confined time and ignition conditions; at the same time, the electronic thermal conductivity was reduced by more than 100 times in the absence of a magnetic field when the magnetic field was greater than 5 T, and the ion thermal conductivity also experienced a significant decrease in the compression peak. The alpha particle energy deposition density in the 5 T embedded magnetic field was relatively raised by more than about 200 times than in the 1 T embedded magnetic field. Also, it was found that magnetization hindered implosion compression process to a certain extent.
- electromagnetically driven implosion /
- magnetized target /
- Z-pinch /
- MHD simulation

HTML全文

图 1 燃料等压拼装图

Figure 1. Illustration of pressure fuel assembly

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图 2 差分网格划分^[16]

Figure 2. Differential meshing^[16]

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图 3 半径流线图

Figure 3. Radial flow chart

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图 4 电子离子升温图

Figure 4. Electron and ion heating diagram

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图 5 燃料密度和压强时程曲线

Figure 5. Histories of fuel density and pressure

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图 6 磁场对电子热传导系数的影响

Figure 6. Effect of magnetic field on the electron heat conduction coefficient

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图 7 磁场对离子热传导系数的影响

Figure 7. Effect of magnetic field on the ion heat conduction coefficient

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图 8 磁场对α粒子能量沉积的影响

Figure 8. Effect of magnetic field on the alpha particle energy deposition

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图 9 等离子体加热能量随磁场的变化

Figure 9. Plasma heating energy varying with the change of magnetic field

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图 10 内爆压缩做功示意图

Figure 10. Illustration of internal-explosion-compression work

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