A new application of the nonlinear dielectric method for studying relaxation processes in liquids
A new application of the nonlinear dielectric method for studying relaxation processes in liquids
复制标题
非线性介电方法在研究液体弛豫过程中的新应用
DOI：
10.1063/1.1147529
复制
发表时间：
1996
影响因子：
1.6
通讯作者：
S. Rzoska
中科院分区：
文献类型：
--
作者：
M. Górny;J. Zioło;S. Rzoska
介绍了一种用于研究强电场非线性介电效应引起的液体介电常数变化的测量装置。这种结构是基于Malecki[J.化学]提出的LC发生器的调频思想(谐振电路中有一个电感L和一个电容C)。SoC。法拉第·特伦斯。II 72、104(1976)]。以矩形脉冲(通常为1-4毫秒)的形式施加强电场。该装置可以在很宽的频率范围(80 kHz-12 MHz)进行测量，并包含一个新的校准系统，将系统误差对测量的NDE值的影响降至最低。我们还指出薄荷脑作为NDE研究中的标准参照液。还介绍了无损检测技术在研究临界溶液松弛过程中的新应用。它们是基于关闭强电场后无损检测衰变的时间分辨分析。
The measurement setup for studying changes of electric permittivity induced in liquids by a strong electric field nonlinear dielectric effect, (NDE) is presented. The construction is based on the idea of frequency modulation of an LC generator (with an inductance L and a capacitance C in resonant circuit), proposed by Malecki [J. Chem. Soc. Faraday Trans. II 72, 104 (1976)]. The strong electric field is applied in the form of rectangular pulses (typically 1–4 ms). The setup enables measurements in a broad range of frequencies (80 kHz–12 MHz) and contains a new calibrating system, minimizing the influence of systematic error on the measured NDE values. We also indicate menthol as a standard, reference liquid in NDE studies. New applications of the NDE technique for studying relaxation processes in critical solution are also presented. They are based on the time resolved analysis of NDE decay after switching off the strong electric field.