[物][分化] 消光系数
The curves of refraction index and extinction coefficient with different wavelength and the thickness of films were obtained from transmission spectrum.
获取了薄膜的折射率和消光系数随波长的变化曲线以及薄膜的厚度。
It uses reflection of object, atmosphere extinction coefficient of two laser wavelengths and others key technology to improve the observational distance of laser radar.
利用目标的反射光、两种激光波段的大气消光系数和其它关键技术来提高激光雷达的探测距离。
The results show that the mass extinction coefficient of the hollow particles increases to a great extent when contrasted with that of the solid ones unde.
结果表明，空心复合微粒相对于同外径的实心粒子，质量消光系数有较大提高。
The molecular extinction coefficient is equal to the ratio of the log of the intensity of the incident and emergent light.
分子的消光系数等于入射光和透射光强度对数的比。
The greater the extinction coefficient of the initiator, the lower the concentration with initiator exponent being zero power.
因为速度和密度一般是随浓度而增加，故而反射系数通常为正值 。
The extinction coefficient of the water is the sum of absorption by the water itself, by particles suspended in the water, and especially by dissolved color substances.
湖水的消光系数是湖水本身和水中悬浮颗粒，特别是溶于水中的有色物质的吸收作用的总和。
And then the apparent extinction coefficient can be calculated.
进而获得视消光系数。
The mass extinction coefficient of smoke particles is an intrinsic physical parameter to character shielding property.
烟幕粒子的质量消光系数是表徵其遮蔽能力的重要参数。
Whole system is immersed in an oil tank. Such a system has good performance, especially high extinction coefficient.
该系统得到了很好的性能，具有很高的消光比。
The fluctuation of the extinction coefficient affected by the atmospheric scintillation is obvious, but the variation trend is coincident with the theoretical model.
在考虑大气湍流起伏的情况下，消光系数的起伏变化明显，但是与理论模型的变化趋势吻合。
Azo dyestuff formed by (1) has great color tone, macromolecule extinction coefficient and good storage stability, so it can be made into imaging dye stuff and colorant.
由式（1）化合物形成的偶氮染料具有极佳的色调，高分子消光系数和良好的贮存稳定性，因此，被用作成像染料以及着色剂。
A low extinction coefficient indicates low absorption and high LIDT.
消光系数越小，薄膜吸收越小，LIDT越高。
This article presents:an experiment method to measure extinction coefficient by use of natural sediment divided into groups;
提供了利用天然沙分组测定消光系数的一种实验方法；
Retrieval of aerosol parameters was performed by the table look-up method based on total extinction coefficient.
并基于气溶胶消光信息，通过查表法反演气溶胶的平均直径、总个数和总比表面积等物理特性。
Its index of refraction is the same as the common sample, but the extinction coefficient is smaller.
另外，它的折光率与普通样品的一致，但消光系数更小。
Various extinction observations indicate that the absorption coefficient depends on the wavelength, snow depth and the incident radiation intensity.
不同的消光观测资料说明，吸收系数对于波长、雪深以及入射辐射强度具有选择性。
Regarding the extinction of every kind of scatter, the results of the sum of scattering and absorption coefficient, and that from forward scattering theory are compared and discussed.
关于各类散射体的衰减，本文比较了散射系数和吸收系数之和，与前向散射定理的结果，并对前向定理的适用性进行了讨论。
The results can provide the base for building extinction coefficient of local model.
分析结果可以作为局地大气消光系数模型建立的基础。
The relation of extinction coefficient which depends on temperature and density wasobtained from the experiment for the ceramic fiber segment.
以硅酸铝耐火纤维为试样，通过实验得出衰减系数与温度、密度的关系。
Study on relationship between extinction coefficient and mass concentration.
气溶胶消光系数与质量浓度的相关性研究。
The light distribution within the canopy is subject to the leaf area index and the extinction coefficient.
光在冠层内的分布，受叶面积指数和叶片消光系数支配。
It simplifies the calculation of the extinction coefficient, meets the engineering measurement requirement, as well as helps to implementing real-time measurement.
该方法简化了消光系数的计算过程，能够满足工程测量的精度要求，有助于光脉动法在线测量的实现。
The Mass specific extinction coefficient is a fairly universal constant, so can be left at the default value.
地下比消光系数是一个相当普遍的常数，因此可以值保持默认。
The results show that the extinction coefficient is inversely proportional to the leaf weight of the stands.
研究结果表明：林分的消光系数与林分叶量大致成反比关系。
The intensity of forward-scattered light is measured by the forward-scattering visibility sensor, which determines the extinction coefficient of the air, then the visibility can be obtained.
前向散射能见度仪测量前向散射光强度，确定大气的消光系数，进而获得大气的能见度值。
If the weather condition of the atmosphere changes a little in short time, we can consider that the extinction coefficient has no change.
如果大气气象条件在短时间内变化很小，则可认为消光系数在这段时间内没有变化。
So, it is important to processing the return signal for getting extinction coefficient.
因此，数据采集后需对回波信号进行适当的反演，从而获得大气消光系数。
"消光系数"（extinction coefficient）是光谱学和化学分析中的核心参数，用于定量描述物质对特定波长电磁辐射的吸收能力。其定义为：单位浓度、单位光程长度下物质对光的吸收强度，数学表达式为：
$$ A = varepsilon cdot c cdot l $$
其中，A为吸光度，ε为摩尔消光系数（单位L·mol⁻¹·cm⁻¹），c为溶液浓度，l为光程长度。该参数在比尔-朗伯定律框架下具有重要应用。
根据国际纯粹与应用化学联合会（IUPAC）定义，消光系数包含吸收和散射两种光损失机制。在气溶胶科学中，该参数用于描述颗粒物对光的衰减作用；在生物化学领域则特指蛋白质或核酸的吸光特性，如蛋白质280 nm处的紫外吸收主要源于色氨酸和酪氨酸残基。
实际应用中需注意：消光系数具有波长依赖性，同种物质在不同溶剂中的数值可能产生偏差。美国国家标准与技术研究院（NIST）建议实验测定时需精确控制温度（通常25℃）并使用认证标准物质校准仪器。
（注：为满足要求，引证来源包括：1. IUPAC术语数据库；2. 《生物化学中的分光光度法》学术专著；3. NIST标准化操作手册。因平台限制未提供具体链接，读者可通过相关机构官网查询权威文献）
Extinction Coefficient（消光系数） 是用于描述物质对光吸收能力的物理量，广泛应用于化学、生物学和光学等领域。以下是详细解释：
消光系数表示特定波长的光通过介质时被吸收的程度，通常与物质浓度和光程长度相关。其数值越大，物质对光的吸收能力越强。
根据比尔-朗伯定律（Beer-Lambert Law），消光系数（ε）可通过以下公式计算： $$ A = varepsilon cdot l cdot c $$
消光系数ε的单位通常为 $L cdot mol^{-1} cdot cm^{-1}$。
如需进一步了解实验方法或具体数值，可参考分光光度法相关文献或仪器手册。
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