In situ measurement of radiation induced conductivity in oxide insulators during neutron irradiation
In situ measurement of radiation induced conductivity in oxide insulators during neutron irradiation
复制标题
中子辐照期间氧化物绝缘体辐射感应电导率的原位测量
DOI：
10.1063/1.366917
复制
发表时间：
1998
影响因子：
3.2
通讯作者：
W. S. Eatherly
中科院分区：
文献类型：
--
作者：
D. P. White;L. Snead;S. Zinkle;W. S. Eatherly
在布鲁克海文国家实验室的高通量束反应堆上，对约450°C下Wesgo Al995多晶氧化铝的原位电导率进行了实验研究。在6000 Gy/ S的电离剂量率下，测得的辐射诱导电导率（RIC）约为10−8 S/m。在147 V/mm的电场中，在每原子≈1.8个位移的剂量水平下，没有观察到永久性辐射诱发电降解的证据。研究了中子辐照对两种矿物绝缘电缆电性能的影响。在约6000 Gy/ S的电离剂量率下，测量到同轴电缆和三轴电缆MgO绝缘的RIC在6-20 ×10−8 S/m范围内。
An experimental investigation of the in situ electrical conductivity of Wesgo Al995 polycrystalline alumina at approximately 450 °C has been performed at the high flux beam reactor at Brookhaven National Laboratory. The measured radiation induced conductivity (RIC) was about 10−8 S/m at an ionizing dose rate of 6000 Gy/s. No evidence for permanent radiation induced electrical degradation was observed for an applied electric field of 147 V/mm up to a dose level of ≈1.8 displacements per atom. The effect of neutron irradiation on the electrical properties of two mineral insulated cables was also investigated. The RIC in the MgO insulation of a coaxial and a triaxial cable was measured to be in the range of 6–20 ×10−8 S/m at an ionizing dose rate of ≈ 6000 Gy/s.