Electrical behaviour of ceramic breeder blankets in pebble form after gamma-radiation

被引：6

作者：

Carella, E. ^{[1
,2
]}

Hernandez, T. ^{[1
]}

Moreno, B. ^{[3
]}

Chinarro, E. ^{[3
]}

机构：

[1] CIEMAT, Natl Fus Lab, Avda Cornplutense 40, Madrid 28040, Spain

[2] UNED Fdn, Madrid 28010, Spain

[3] CSIC, Inst Ceram & Vidrio, Madrid 28049, Spain

来源：

NUCLEAR MATERIALS AND ENERGY | 2015年 / 3-4卷

关键词：

Irradiation effect; Electrical conductivity; Ionizing radiation; Solid breeder blanket;

D O I：

10.1016/j.nme.2015.02.001

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Lithium orthosilicate (Li4SiO4) ceramics in from of pebble bed is the European candidate for ITER testing HCPB (Helium Cooled Pebble Bed) breeding modules. The breeder function and the shielding role of this material, represent the areas upon which attention is focused. Electrical measurements are proposed for monitoring the modification created by ionizing radiation and at the same time provide information on lithium movement in this ceramic structure. The electrical tests are performed on pebbles fabricated by Spray-dryer method before and after gamma-irradiation through a Co-60 source to a fluence of 4.8 Gy/s till a total dose of 5 * 10(5) Gy. The introduction of thermal annealing treatments during the electrical impedance spectroscopy (EIS) measurements points out the recombination effect of the temperature on the gamma-induced defects. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：1 / 5

页数：5

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