The Study of Vibrationally Excited Molecules by Low Energy Electron Scattering

对振动激发氮的电离的研究开辟了一个重要的新领域--一种利用自由喷流膨胀聚焦的靶子的方法。此外，使用激光激发产生特定于状态或温度的振动分布将为一种全新的测量类别提供机会。随着固体和气相化学和物理界面的研究工作的重点，该研究对多种放电的实际技术应用具有重要意义。了解电离势是理解放电等离子体中电离平衡的关键；解离结合形成负离子可能是控制高功率开关的关键；而对振动布居的了解和控制对于未来激光系统的建模和设计是必不可少的。所使用的诊断方法在最终的技术中也可能被证明是非常有用的，这些技术通过使用激光来产生特定的分子种群来定制化学反应。

Studies of the ionization of vibrationally excited nitrogen open up an important new area--an approach by the use of a target focused by a free jet expansion. Also, the use of laser excitation forproduction of either state- or temperature-specific vibrational distributions will provide opportunities for an entirely new class of measurements. With the emphasis of work at the interface between solid-state and gas-phase chemistry and physics, the research is significant for practical technologicalapplications in discharges of many kinds. Knowledge of ionization potential is critical to the understanding of ionization balance in discharge plasmas; dissociative attachment to form negative ions may be the key to the control of high power switches; and the understanding and control of vibrational populations is essential to the modeling and design of future laser systems. The diagnostics used may also prove quite useful in eventual technologies for the tailoring of chemical reactions by the use of lasers to producestate- specific molecular populations.