Research and development of radiation resistant ultrasonic sensors for quasi- image forming systems in a liquid lead-bismuth
نویسندگان
چکیده
The problems of the development of high-temperature radiation resistant ultrasonic sensors operating in a liquid lead-bismuth alloy are analysed. Experimental diffusion bonded bismuth titanate sensors for operation up to 450 °C were developed. For acoustical coupling with a liquid metal the sensor protector is polished or coated by a diamond like carbon layer. The developed sensors survived high irradiation doses and experienced only 4 % decrease of the transfer coefficient after gamma irradiation by 22 MGy dose. Experiments in a liquid lead-bismuth were provided, including sensor long term wettability tests, determination of ultrasound losses and measurement of the ultrasound velocity temperature dependence.
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