Dicke变窄效应来自于活性吸收分子（activemolecules）在缓冲气体（buffer gas）中的限域化（confinement），这使得多普勒线型变窄了。
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从而使缓冲气体的作用能够定量进行计算。
So that the buffer gas effect could be calculated quantificationally.
基于分子振动弛豫的理论，完善了缓冲气体的作用模型。
Based on the theory of vibrational relaxation, the buffer gas mechanic model was developed.
测量了它的光谱特性以及它与钠原子密度，入射激光参量，缓冲气体密度的关系。
The relation between this emission and the density of Na, the parameters of laser and the pressure of the buff re gas have been studied.
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