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等离子体和激发光源 1920年前后,Longmuir对电离气体的振动问题进行了研究,那时,他把离子电荷和电子电荷均衡的区域命名为等离子体。此后,在物理学领域里开始出现了等离子体这个名词。等离子体(正负电荷相等而整体上保持中性的物质状态)是和固体、液体、气体并存的物质第四态。从狭义上看,是指电离度为1时的完全电离状态,但是从广义上看也包含有中性粒子的弱电离气体,一般认为是指准中性的电离气体。表1列出的分析上使用的激发光源从广义上讲都属等离子体。通常在讲到等离子体发射光谱分析法时,主要是指将溶液试样引进DCP,CCP,ICP,MIP等光源中完成试样激发和分析的。
Plasma and Excitation Light Sources Around 1920, Longmuir studied the problem of ionizing gas vibration when he named the area where the ionic charge and the electron charge were equalized as the plasma. Since then, the term plasma has begun to appear in the field of physics. Plasma (in the positive and negative charges are equal to the overall state of the material to maintain neutral) and solid, liquid, gas fourth material coexist. In a narrow sense, it refers to the state of complete ionization when the degree of ionization is 1, but it also includes the weakly ionized gas of neutral particles in a broad sense. It is generally considered to be a quasi-neutralized ionized gas. The excitation sources used in the analysis listed in Table 1 are broadly plasma. Usually speaking of plasma emission spectrometry, mainly refers to the sample solution into DCP, CCP, ICP, MIP and other light sources to complete the sample excitation and analysis.