用相对强度法测量固体推进剂火焰温度分布

许多高温体如火焰，由于本身伴随着非常复杂的化学反应，辐射出的光谱非常复杂。这些光谱通常包括连续谱、谱线和谱带三部分，而且在许多情况下谱线非常密集。如果用谱线强度法测温，就会发现由于谱线非常密集，很难找到合适的孤立谱线。文章针对这些密集谱线，在特定条件下提出用多条谱线的总强度代替一条谱线的强度来测量温度的方法，改进了常用的相对强度法表达方式，使用密集谱线的总强度与另一条谱线强度的比值来计算温度，成功测量了固体推进剂火焰的温度分布，并将结果和热电偶测量的结果做了比较。

Flame Temperature Distribution Measurement of Solid Propellants

Many high temperature bodies such as flame, in which chemical reactions are very complex, emit their own spectra. These emission spectra usually consist of the spectral lines, spectral bands and the continuous spectra. In some cases, the spectral lines gather together. It is very difficult to find the right single spectral line when the spectral line intensity method is used. To deal with this problem, the idea that the single spectral line intensity is replaced by the total intensity of many spectral lines to measure the temperature is mentioned. And the relative intensity method is also changed to deal with this idea. The measurement of the temperature distribution based on this improved method is successful, and the measurement results are compared with the results of the thermocouple method.