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本文讨论纤维中水分子对微波(及红外)的偏振吸收现象.提出了纤维中水分子的转体模型,用量子力学的一般方法,推算了纤维中水分子的转动能级及微波(红外)吸收波谱.实验表明,当微波的电矢量与纤维轴的夹角变化时,束缚水分子对微波的吸收将按余弦平方律变化,而近自由水分子的吸收则不变化.理论演绎,求证了这种偏振吸收规律,并讨论了束缚水分子和近自由水分子对微波的吸收系数.
In this paper, we discuss the polarization absorption of water molecule in microwave (and infrared) fiber. A model of water molecule in fiber is proposed. By using the general method of quantum mechanics, the rotational energy level of water molecule in fiber and microwave (infrared) Absorption spectra.The experimental results show that when the angle between the microwave electric vector and the fiber axis changes, the absorption of the irreducible water molecules to the microwave will vary according to the cosine square law, while the absorption near the free water molecules will not change.The theoretical deduction confirms This polarization absorption law, and discusses the irreducible water molecules and nearly free water molecules on the microwave absorption coefficient.