Effect of temperature on dielectric properties of ice in the range 5-39 GHz
Effect of temperature on dielectric properties of ice in the range 5-39 GHz
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DOI：
10.1063/1.363582
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发表时间：
1996-11
影响因子：
3.2
通讯作者：
T. Matsuoka;S. Fujita;S. Mae
中科院分区：
文献类型：
--
作者：
T. Matsuoka;S. Fujita;S. Mae
在5-39 GHz频率范围和190-265 K温度范围内测量了冰的相对复介电常数e*=e′−ie″。在5和10 GHz的空腔谐振器法和33和39 GHz的开放谐振器法被用来确定冰的低介电损耗。介电常数e′的真实的部分与频率无关。观察到了e′的温度依赖性，并讨论了非谐效应对红外极化率的贡献。在200 ~ 258 K之间，e″的计算结果弥补了以前结果的差距.讨论了红外吸收带对e″的影响随频率和温度的变化关系。在5-39 GHz范围内，e″随频率的变化随温度的降低而增大。吸收可能发生在低于红外区的频率。
The relative complex dielectric permittivity, e*=e′−ie″, of ice has been measured in the frequency range 5–39 GHz and in the temperature range 190–265 K. The cavity resonator method at 5 and 10 GHz and the open resonator method at 33 and 39 GHz were used to determine the low dielectric loss of ice. The real part of permittivity e′ was independent of the frequency. The temperature dependence of e′ was observed and is discussed in terms of contributions from anharmonic effects to infrared polarizability. The e″ obtained bridges the gap of previous results between 200 and 258 K. We discuss the frequency and temperature dependence of the effect of the infrared absorption band on e″. The e″ variation with frequency increased as the temperature decreased at 5–39 GHz. It is possible that absorption takes place at frequencies below the infrared region.