Radiation-induced transformation of Hafnium composition

Alexander Ulybkin; Alexander Rybka; Konstantin Kovtun; Vladimir Kutny; Victor Voyevodin; Alexey Pudov; Roman Azhazha

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자료유형: 학술저널

저자정보: Alexander Ulybkin Alexander Rybka Konstantin Kovtun Vladimir Kutny Victor Voyevodin Alexey Pudov Roman Azhazha

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제51권 제8호

발행연도: 2019.1

수록면: 1,964 - 1,969 (6page)

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The safety and efﬁciency of nuclear reactors largely depend on the monitoring and control of nuclear radiation. Due to the unique nuclear-physical characteristics, Hf is one of the most promising materials for the manufacturing of the control rods and the emitters of neutron detectors. It is proposed to use the Compton neutron detector with the emitter made of Hf in the In-core Instrumentation System (ICIS) for monitoring the neutron ﬁeld. The main advantages of such a detector in comparison the conventional b-emission sensors are the possibility of reaching of a higher cumulative radiation dose and the absence of signal delays. The response time of the detection is extremely important when a nuclear reactor is operating near its critical operational parameters. Taking Hf as an example, the general principles for calculating the chains of materials transformation under neutron irradiation are reported. The inﬂuence of 179m1Hf on the Hf composition changing dynamics and the process of transmutants’ (Ta, W) generation were determined. The effect of these processes on the absorbing properties of Hf, which inevitably predetermine the lifetime of the detector and its ability to generate a signal, is estimated.

참고문헌 (29)

참고문헌 신청

P.E. Blomberg / 1973 / Reactor physics problems concerning the startup and operation of power reactors, In Developments in the Рhysics of Nuclear Power Reactors :183~199

V.D. Rysovanyi / 1993 / Hafnium in Nuclear Power Engineering / NIIAR

D. Gosset / 2017 / Struct. Mat. For Gen. IV Nuclear Reactors / Elsevier Ltd :533~567

B.A. Shilyaev / 2017 / Compton detector of neutrons for the energy yield control in the active zone of WWER / Prob. Atomic Sci. Technol. (PAST) 108(2):75~82

V. I. Mitin / 1973 / Experimental study of current formation in direct-charge detectors with a rhodium emitter / Soviet Atomic Energy 34(4):376~379

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