Experimental Investigation of Nonlinear Processes in Plasmas(Physics)

实验研究了等离子体物理中非线性相互作用的三个不同但相互联系的领域：非磁化等离子体中的Langmuir湍流，非中性等离子体中的非线性波和不稳定性，以及非线性哨声波-粒子相互作用。本文将探讨弱湍流理论的有效性和局限性，以及从弱到强的朗缪尔湍流的转变。将模拟磁层中的非线性波粒相互作用，并研究各向异性口哨的不稳定性。非中性等离子体将在非线性相互作用，如重力动势效应，可以探索的制度下进行研究。这项研究将有助于提高对非线性等离子体环境中基本过程的理解。

Three distinct, yet connected areas of non-linear interactions in plasma physics are studied experimentally: Langmuir turbulence in unmagnetized plasmas, non-linear waves and instabilities in non-neutral plasmas, and non-linear whistler wave-particle interactions. The validity and limitations of weak turbulence theory and the transition from weak to strong Langmuir turbulence will be investigated. Nonlinear wave particle interactions in the magnetosphere will be simulated and anisotropic whistler instabilities will be studied. Non-neutral plasmas will be investigated in a regime where non-linear interactions, such as ponderomotive force effects, can be explored. The research will lead to improved understanding of fundamental processes in non-linear plasma environments.