van Beeck J P, Giannoulis D, Zimmer L, Riethmuller M L
Opt Lett. 1999 Dec 1;24(23):1696-8. doi: 10.1364/ol.24.001696.
Standard rainbow thermometry connects the scattering angle of the main rainbow maximum, generated by a single droplet, to the droplet's refractive index and thus to its temperature. Droplet nonsphericity influences the rainbow position and therefore degrades the quality of the droplet-temperature measurement. We propose global rainbow thermometry, which measures the average rainbow position that is created by multiple droplets and from which a mean temperature can be derived. The new technique aims at eliminating the nonsphericity effect. The principle of this method is presented, and a typical recorded image is discussed.
标准彩虹测温法将单个液滴产生的主彩虹最大值的散射角与液滴的折射率联系起来，进而与液滴的温度联系起来。液滴的非球形度会影响彩虹的位置，从而降低液滴温度测量的质量。我们提出了全局彩虹测温法，该方法测量由多个液滴产生的平均彩虹位置，并由此推导出平均温度。这项新技术旨在消除非球形度效应。介绍了该方法的原理，并讨论了一幅典型的记录图像。
