首页> 外文期刊>The Journal of Chemical Physics >OBSERVATION OF CHARACTERISTIC, POLARITY-DEPENDENT, DOPPLER SHIFTS FROM NEUTRAL SPECIES IN THE POSITIVE COLUMN OF A DISCHARGE PLASMA
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OBSERVATION OF CHARACTERISTIC, POLARITY-DEPENDENT, DOPPLER SHIFTS FROM NEUTRAL SPECIES IN THE POSITIVE COLUMN OF A DISCHARGE PLASMA

机译:放电等离子体正柱中性物种的特征性,极性相关的多普勒谱仪的观察

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Doppler shifts of emissions from neutral species have been observed for the first time in a positive column of a de glow discharge. For a detailed study, we have chosen emissions of H-2 and its isotopomers in a hydrogen discharge using a high resolution Fourier-transform spectrometer. Experimetal evidence supports the conclusion that the observed shifts derive from momentum transfer during electron-molecule collisions that produce the emissive excited states. A theoretical model has been formulated to relate Doppler shifts to the drift velocity of electrons in the discharge as well as to the momentum transfer of electron-molecule collisions. Predictions based on the model are consistent with the experimental observations. (C) 1995 American Institute of Physics. [References: 13]
机译:在除辉光放电的正栏中首次观察到中性物质发射的多普勒频移。为了进行详细研究,我们使用高分辨率傅里叶变换光谱仪选择了氢放电中H-2及其异构体的排放。经验金属证据支持这样的结论,即观察到的位移源自产生发射激发态的电子分子碰撞过程中的动量传递。建立了一个理论模型,将多普勒频移与放电中电子的漂移速度以及电子-分子碰撞的动量传递相关联。基于模型的预测与实验观察结果一致。 (C)1995年美国物理研究所。 [参考:13]

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