| 薄膜的光谱发射率 |
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| 引用本文： | 钟迪生.薄膜的光谱发射率[J].光谱学与光谱分析,2001,21(1):23-27. |
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| 作者姓名： | 钟迪生 |
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| 作者单位： | 辽宁大学物理系, |
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| 基金项目： | 辽宁省教委基金资助课题!编号 990 1 2 1 0 2 4 |
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| 摘 要： | 本文讨论了薄膜内的多次反射对低吸收薄膜光谱发射率的影响。这里推导出的薄膜发射率的表达式与薄膜厚度d和其光学常数n(λ）和k(λ）有关。在d→∞的特殊情况下，薄膜发射率与大块材料发射率相等。给出了实际数值评价及发射率与d、n(λ）和k(λ)相互关系的更为精确的数值结果。
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| 关 键 词： | 薄膜 选择性表面 光谱发射率 全发射率 吸收系数 消光系数 强度透射系数 |
| 修稿时间： | 1999年10月9日 |
Spectral Emissivity of thin Films |
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| Disheng ZHONG.Spectral Emissivity of thin Films[J].Spectroscopy and Spectral Analysis,2001,21(1):23-27. |
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| Authors: | Disheng ZHONG |
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| Institution: | Physics Department of Liaoning University, 110036 Shenyang. |
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| Abstract: | In this paper, the contribution of multiple reflections in thin film to the spectral emissivity of thin films of low absorption is discussed. The expression of emissivity of thin films derived here is related to the thin film thickness d and the optical constants n(lambda) and k(lambda). It is shown that in the special case d-->infinity the emissivity of thin films is equivalent to that of the bulk material. Realistic numerical and more precise general numerical results for the dependence of the emissivity on d, n(lambda) and k(lambda) are given. |
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| Keywords: | Selective surfaces Spectral emissivity Total emissivity Absorption coefficient Extinction coefficient Intensity transmission coefficient |
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