Complex refractive index of ammonium nitrate in the 2-20-μm spectral range
Complex refractive index of ammonium nitrate in the 2-20-μm spectral range
复制标题
硝酸铵在 2-20 μm 光谱范围内的复折射率
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
D. Cutten
中科院分区：
文献类型：
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作者：
M. Jarzembski;M. L. Norman;K. Fuller;V. Srivastava;D. Cutten
利用硫酸铵（AMS）、碳酸钙（CAC）和硝酸铵（AMN）的高分辨率傅里叶变换红外吸收和透射光谱数据，与先前发表的AMS和CAC复折射率数据进行比较，以推断实验参数，确定AMN在2 ~ 20 μm红外波长范围内的虚折射率。应用减法Kramers-Kronig数学关系来计算三种组合物的真实的折射率。发现AMS和CAC与公布的值非常一致，验证了AMN获得的复折射率。我们进行了后向散射计算AMS，AMN，CAC气溶胶的对数正态分布显示其后向散射光谱的差异。
Using high-resolution Fourier-transform infrared absorbance and transmittance spectral data for ammonium sulfate (AMS), calcium carbonate (CAC), and ammonium nitrate (AMN), we made comparisons with previously published complex refractive-index data for AMS and CAC to infer experimental parameters to determine the imaginary refractive index for AMN in the infrared wavelength range from 2 to 20 μm. Subtractive Kramers-Kronig mathematical relations were applied to calculate the real refractive index for the three compositions. Excellent agreement for AMS and CAC with the published values was found, validating the complex refractive index obtained for AMN. We performed backscatter calculations using a log-normal size distribution for AMS, AMN, and CAC aerosols to show differences in their backscattered spectra.