Basic Physics and Measurments of Pure electron Plasmas in Crossed-field Amplifiers and Micro-Field Emitter Arrays

这项资助旨在研究交叉场放大器(CFAs)和微场发射器阵列(MFEA)中纯电子等离子体的基本非线性物理。这项研究包括在低频(100-200 MHz)CFA的相互作用区域进行现场测量，该CFA是专门为进行此类测量而设计的。这些测量包括电子密度、射频场、等离子体势、电子能量分布函数、以及使用各种标准和新开发的诊断探头的噪音机制。MFEA的研究涉及到真空场发射体的发射，它将在CFA等电子器件中有许多创新的应用。这项新兴技术还需要在非常小的范围内研究电子束动力学，这代表了等离子体研究的一个新领域。将为这些研究开发新的微型诊断方法。在拟议的三年计划中，将研究以现有CFA和MFEA为实验载体的纯电子等离子体的宏观和微观方面。MFEA将在CFA中进一步用作阴极和可控分布发射底，以评估其有效性并研究其对CFA物理的影响。

This grant is intended to study the basic nonlinear physics of pure electron plasmas in crossed-field amplifiers (CFAs) and in Micro-Field Emitter Arrays (MFEAs). The study includes in situ measurements in the interaction region of a low frequency (100- 200 MHz) CFA which has been designed specifically for making such measurements. These include three-dimensional measurements of the electron density, rf field, plasma potential, electron energy distribution functions, and noise mechanisms using a variety of standard and newly developed diagnostic probes. The study of MFEAs concerns the emission from vacuum field-emitters which will have many innovative applications in electron devices such as the CFA. This emerging technology also requires a study of the electron beam dynamics in a very small scale which represents a new area of plasma research. New miniature diagnostics will be developed for these studies. For the proposed three year program, both the macro and micro aspects of pure electron plasmas using the existing CFA and MFEAs as our experimental vehicles will be studied. MFEAs will be further used in the CFA as a cathode and as a controllable distributed emitting-sole in order to evaluate their effectiveness and to study their effects on CFA physics.