In this work, we have investigated the dielectric properties of low density polyethylene (LDPE) grad (LA071) samples exposed to different γ irradiation doses ranging from 0 to 50 Gy. The distribution of the relaxation is demonstrated by Cole–Cole plots, depending on γ irradiation dose. Some parameters like optical dielectric constant, oscillating strength of the dipoles, macroscopic relaxation time and molecular relaxation time of LDPE samples have been estimated from Cole–Cole plots at room temperature. The γ irradiation enhances energy storage and energy loss of LDPE samples. It is concluded that γ irradiation can be considered as an alternative tool to improve the dielectric properties of polymer.

在这项工作中，我们研究了暴露于0至50 Gy范围内的不同γ辐射剂量的低密度聚乙烯（LDPE）梯度（LA071）样品的介电性能。弛豫的分布由Cole-Cole图证明，具体取决于γ辐射剂量。LDPE样品的一些参数，如光学介电常数，偶极子的振荡强度，宏观弛豫时间和分子弛豫时间，是根据室温下的Cole-Cole图估算的。γ辐射可增强LDPE样品的能量存储和能量损失。结论是，可以将γ辐射视为改善聚合物介电性能的替代工具。