The Study of Vibrationally Excited Molecules by Low Energy Electron Scattering

振动激发氮的电离研究开辟了一个重要的新领域——一种利用自由射流膨胀聚焦目标的方法。此外，利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方法提供机会。该研究的重点是固相、气相化学和物理的界面，对多种放电的实际技术应用具有重要意义。了解电离势对于理解放电等离子体中的电离平衡至关重要；解离附着形成负离子可能是控制大功率开关的关键；对振动居群的理解和控制对未来激光系统的建模和设计至关重要。所使用的诊断方法也可能被证明在最终的技术中非常有用，这些技术可以通过使用激光来产生特定的分子群来定制化学反应。

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.