I. R. Mullakhmetov, V. S. Saenko, A. P. Tyutnev, E. D. Pozhidaev
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引用次数: 0
摘要
我们开发了一种技术,并首次获得了有关聚苯乙烯(PS)在 79 K 温度(接近液氮沸点(77 K))下的辐射诱导电导率(RIC)的足够完整的数据。RIC 是在脉冲和持续暴露于能量为 50 keV 的电子下进行研究的。结果表明,PS 在 79 K 温度和室温下的 RIC 由两个分量的总和决定:瞬间分量和延迟分量。开氏 79 度时的两个分量都比开氏 298 度时小得多。总信号下降了 40 倍,而延迟分量则下降了近 200 倍,在 RIC 信号中迅速分量占主导地位。研究了随着温度的降低,PS 中发生静电放电(ESD)的可能性。研究表明,PS 在室温下能够抵御静电放电,但在 79 K 时就进入了可能发生静电放电的材料类别。
Low-Temperature Radiation-Induced Conductivity of Polystyrene under the Action of Low-Energy Electrons
A technique has been developed and, for the first time, sufficiently complete data on the radiation-induced conductivity (RIC) of polystyrene (PS) at a temperature of 79 K, close to the boiling point of liquid nitrogen (77 K). RIC has been studied under pulsed and continuous exposure to electrons with an energy of 50 keV. It is shown that the RIC of PS at a temperature of 79 K, as well as at room temperature, determined by the sum of two components: prompt and delayed. Both components at 79 K are much smaller than at 298 K. The total signal falls off by a factor of 40, while the delayed component falls off by a factor of almost 200, and the prompt component dominant in the RIC signal. The possibility of the occurrence of electrostatic discharges (ESD) in PS with decreasing temperature was studied. It has been shown that PS, which is capable of resisting the occurrence of ESD at room temperature, at 79 K passes into the category of materials in which ESD is possible.
期刊介绍:
Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.