XPS 분석 결과 400℃ 열 처리된 표본에 비해 조사 후, 250℃ 열 처리된 표본의 산소공공이 감소한 것을 확인하였다.
As a result of XPS analysis, it was confirmed that the oxygen pores of the specimens heat-treated at 250°C after irradiation were reduced compared to the specimens heat-treated at 400°C.