Comparison of electrical properties of ceramic insulators under gamma ray and ion irradiation
Comparison of electrical properties of ceramic insulators under gamma ray and ion irradiation
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DOI：
10.1016/j.fusengdes.2005.09.047
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发表时间：
2005-10
影响因子：
1.7
通讯作者：
Teruya Tanaka;R. Nagayasu;F. Sato;T. Muroga;T. Ikeda;T. Iida
中科院分区：
文献类型：
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作者：
Teruya Tanaka;R. Nagayasu;F. Sato;T. Muroga;T. Ikeda;T. Iida
研究了Y2O3、CaZrO3和Er2O3陶瓷绝缘体在γ射线和低能离子束辐照下的电性能。γ射线感生电流随偏压的增大而增大。它们的辐射诱导电导率（RIC）从感应电流评估几乎是从以前的聚变中子和裂变反应堆辐照预测的一个数量级内。在低能离子束辐照下，由正偏压产生的感应电流被强烈抑制。从能量沉积的角度来看，离子感生电流的大小明显低于γ射线和中子辐照下的电流。在束照射开始时的感应电流的瞬态变化意味着在试样中的电场的影响所释放的电子和空穴的分布的不均匀性。
The electrical properties of ceramic insulators of Y2O3, CaZrO3and Er2O3were examined under gamma ray and low energy ion beam irradiation. The gamma ray induced currents increased with the bias voltage. Their radiation-induced conductivity (RIC) evaluated from the induced current was almost within one order of magnitude of that predicted from the previous fusion neutron and fission reactor irradiations. Under low energy ion beam irradiation, the induced current from the positive bias voltage was strongly suppressed. From the point of the energy deposition, the magnitude of the ion-induced current was significantly lower than that under gamma ray and neutron irradiations. A transient change in the induced current at the start of beam irradiation implies that the electric field in the specimen was affected by the unevenness of the distribution of the released electrons and holes.