论文标题
超音速激光 - 血压湍流中效率低下的磁场扩增
Inefficient magnetic-field amplification in supersonic laser-plasma turbulence
论文作者
论文摘要
我们报告了在LMJ-petal设施上进行的激光 - 浮肿实验，并在实验室中实现了第一个具有较大磁性雷诺数（$ \ mathrm {rm} \约45美元）的磁性，湍流，超音速等离子体。初始种子磁场被放大，但仅是中等程度的，并且没有动态意义。还观察到小于湍流级联的外尺的尺度上明显没有磁能。我们的结果支持以下观点：中等超音速，低磁性原子量的血浆湍流在放大磁场时效率低下。
We report a laser-plasma experiment that was carried out at the LMJ-PETAL facility and realized the first magnetized, turbulent, supersonic plasma with a large magnetic Reynolds number ($\mathrm{Rm} \approx 45$) in the laboratory. Initial seed magnetic fields were amplified, but only moderately so, and did not become dynamically significant. A notable absence of magnetic energy at scales smaller than the outer scale of the turbulent cascade was also observed. Our results support the notion that moderately supersonic, low-magnetic-Prandtl-number plasma turbulence is inefficient at amplifying magnetic fields.
