ISSN:
1573-8205
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Physics
Notes:
Conclusions Under the assumptions that the volume and surface RIE are power-law functions of the dose rate and Ohm's law is valid for the FE with irradiation, and equation was derived for the leakage current owing to RIE and the electric field generated by the pyroelectric effect in the FE. In this case the parameters characterizing the RIE can, be found by solving a system of four equations, which are constructed based on experimental results for samples of material with different dimensions. In practice the number of unknown can be reduced by using specially constructed samples of the materials (this work) or radiation collimators, which enables irradiation of the required region of the sample. The experimental results obtained with PKR-7M piezoelectric ceramic showed that for dose rates (0.25–5.2)·107 Gy·sec−1 [the corresponding dose range is (0.19–3.6)×103 Gy] both the volume and surface RIE can be represented by a linear function of the dose rate with proportionality coefficients kv=1.2·10−11 Ω−1·m−1·Gy−1·sec and ks=0.53·10−11 Ω−1·Gy−1·sec. The upper limit of the residual RIE of PKR-7M with a maximum dose rate per pulse of 5.2·107 Gy·sec−1 equals σ=1010−6 Ω−1·m−1.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01123568
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