Open AccessNonlinear Conductivity of ZnO Materails Induced by X Ray
Author(s) -
Xiaoning Yang,
Yuming Liu,
Zhihao Wang,
Long Yu,
Wang Jing-hu,
Yongtai Zhang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/711/1/012030
Subject(s) - bremsstrahlung , conductivity , radiation , electrical resistivity and conductivity , spacecraft , dielectric , materials science , x ray , electron , space radiation , physics , optics , optoelectronics , astrophysics , nuclear physics , cosmic ray , quantum mechanics , astronomy
Due to high energy electron radiation in space, Spacecraft internal charging will occur, which will cause deep dielectric electrostatic discharge and cause the most serious anomalies, that is, those that have resulted in the loss of mission. Because spacecraft internal charging is accompanied with X-ray bremsstrahlung, it is possible to mitigate inner dielectric electrostatic discharge by using nonlinear conductivity material induced by X-ray radiation. It shows that the conductivity of ZnO materials increases with the increase of X-ray radiation dose rate. At low X-ray radiation dose rate, the conductivity of ZnO increases linearly with the increase of X-ray dose rate. At high X-ray radiation dose rate, the conductivity of ZnO is saturated gradually. The conductivity of ZnO with high original resistivity varies more widely with the dose rate of X-ray, which is more suitable for spacecraft internal charging protection.