AI 中文总结
研究如何在实验室产生天体物理相关间歇性磁湍流，核心方法是从均匀磁化等离子体出发，用散斑激光束随机扰动，利用质子射线照相术追踪发展并定量表征，主要贡献是能重现匹配空间测量的磁湍流。
AI 中文摘要
间歇性磁湍流，即无序和聚集场的存在，是空间和天体物理等离子体中普遍存在的现象。目前认为它在天体物理系统的动力学中起着关键作用，从影响整个宇宙的演化到控制局部粒子加速。虽然太阳风中有湍流的直接证据，且通过多波长观测取得了进展，但太阳系外的相关知识大多来自建模的间接证据。本文表明，能在实验室中重现定量匹配空间测量结果的磁湍流。从均匀磁化等离子体开始，用散斑激光束随机扰动它。利用质子射线照相术，可追踪所产生间歇性湍流从起始的发展并对其进行定量表征。
英文摘要
Intermittent magnetic turbulence, namely the presence of non-ordered and clusterized fields, is a ubiquitous phenomenon in space and astrophysical plasmas. It is currently understood that it plays a crucial role in the dynamics of astrophysical systems at all scales, from influencing the evolution of the cosmos as a whole to governing local particle acceleration. While there is direct evidence of turbulence in the solar wind, and despite progress obtained through multi-wavelength observations, most of our knowledge of it outside the solar system derives from indirect evidence, through modeling. Here we show that magnetic turbulence, that quantitatively matches that measured in space, can be reproduced in the laboratory. Starting from a homogeneous magnetized plasma, we randomly perturb it using a speckled laser beam. Using proton radiography, we can follow the development and quantitatively characterize the produced intermittent turbulence from its inception.
