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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Emission spectroscopy for characterizing metal-halide lamps
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Emission spectroscopy for characterizing metal-halide lamps

机译：表征金属卤化物灯的发射光谱

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The metal-halide (MH) lamp shows an unwanted axial non-uniform distribution of the metal additives when burning in vertical position, which is caused by the interplay between convection and diffusion. Various MH lamps are investigated by means of emission spectroscopy under varying gravity conditions (1 - 10g) in a centrifuge. The method yields spectra, axial inhomogeneity parameters and axially integrated intensities. The method is easier than methods used before on the same type of lamp. Measurements on lamps with DyI3 as salt filling are used as a calibration of the setup. After comparison with the earlier measurements, we conclude that the new emission spectroscopy is valid for characterization of MH lamps. Next, we apply the method on commercial lamps (Philips MASTER Cosmo White). For these lamps, in addition NaI densities at the wall and axial temperature profiles are obtained by using self-reversed lines of Na and Hg, respectively.
机译：当在垂直位置燃烧时，金属卤化物（MH）灯显示出金属添加剂不希望出现的轴向不均匀分布，这是由于对流和扩散之间的相互作用引起的。在不同的重力条件下（1-10g）在离心机中通过发射光谱法研究了各种MH灯。该方法产生光谱，轴向不均匀性参数和轴向积分强度。该方法比以前在相同类型的灯上使用的方法更容易。用DyI3作为填充盐的灯的测量值用作设置的校准。与先前的测量结果进行比较后，我们得出结论，新的发射光谱对于MH灯的表征是有效的。接下来，我们将该方法应用于商用灯（Philips MASTER Cosmo White）。对于这些灯，还分别通过使用Na和Hg的自反转线获得壁和轴向温度曲线上的NaI密度。

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