중성자 조사된 원자로압력 용기에 대한 풀림 효과 = Annealing Effects of Neutron-irradiated Reactor Pressure Vessel

다국어 초록 (Multilingual Abstract)

To estimate the thermal annealing effect of the nuclear reactor pressure vessel (RPV) by the fast neutron (En>1MeV) irradiation, we have studied the change of the Mossbauer parameters of RPV steel with the fast neutrons dosage of 1, ??, ?? n/㎠. DSC experiment was done to find annealing temperature of all samples, so all samples were annealed at 600℃ for 1, 2, 3 and 4 hours respectively. The influence of neutron irradiation on RPV steel was studied by Mossbauer effect. The Mossbauer spectra for all samples showed the superposition of two sextets and one doublet at room temperature. The isomer shift(I. S.) and quadrupole splitting(Q. S.) values of sextets were changed within experimental errors for all samples, but these values of doublet were rapidly changed at the sample of the dose ?? n/㎠. The magnetic hyperfine field was varied within ±3%. For thermal annealing, we can not found any particular change in the values of I.S. and Q. S. But in Geff. we think that there were any annealing effect for the dose 1016 n/㎠ after 3 hours annealing time.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 실험
• 3. 실험 결과 및 논의
• 4. 결론
• 참고문헌