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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Approximations to the electron energy distribution and positive column models for low-pressure discharge light sources
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Approximations to the electron energy distribution and positive column models for low-pressure discharge light sources

机译：低压放电光源的电子能量分布和正柱模型的近似值

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The applicability of 'fluid' models based on analytic approximations of the electron energy distribution function (EEDF) and of kinetic models for low-pressure discharge light sources is discussed. Traditionally, 'fluid' models of fluorescent lamps assume that the EEDF is Maxwellian up to the energy of the first excited state. It is shown that such an approach is sufficiently accurate in most cases of conventional as well as of 'highly loaded' fluorescent lamps. However, this assumption is strongly violated for many rare gas glow discharges for mercury free light sources. As an example, a neon dc discharge is studied. The densities of the four lowest excited states and the electric field have been measured. The experimental results can be fairly well reproduced by a kinetic positive column model. [References: 39]
机译：讨论了基于电子能量分布函数（EEDF）和动力学模型的解析近似的“流体”模型在低压放电光源中的适用性。传统上，荧光灯的“流体”模型假设EEDF是Maxwellian直至第一激发态的能量。结果表明，这种方法在大多数常规荧光灯和“高负荷”荧光灯的情况下都足够准确。但是，对于无汞光源的许多稀有气体辉光放电，这一假设被严重违反。例如，研究了霓虹灯直流放电。已经测量了四个最低激发态的密度和电场。通过动力学正柱模型可以很好地再现实验结果。 [参考：39]

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