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NTIS 바로가기암석학회지 = The journal of the petrological society of korea, v.24 no.2, 2015년, pp.77 - 90
The fission track registration techniques for accurate determinations of uranium in solid- and liquid-state geological materials were recommended and their applicability were examined. The determination of uranium can be achieved by optical counting of neutron-induced fission tracks of
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
우라늄의 특징은? | 우라늄은 마그마 내에서 이온반경이 크고(0.89Å)전하가 높아서 불호정적 거동을 하므로 딴 원소들과 쉽게 치환되지 못하고 마그마 분화의 후기단계에 저콘 같은 부성분광물 내에 농집되는 경향이 있다(BGS, 1991). 따라서 염기성암-초염기성암(<0. | |
피션트랙 검출기법의 장점은? | 딴 분석방법과 달리 원자로 사용절차가 걸림돌로 작용했을 수도 있다. 그렇지만 피션트랙법은 우라늄 원자의 핵분열 흔적을 트랙 디텍터에 낱낱이 기록해낼 수 있으므로 우라늄 함량 측정 뿐 아니라 분포상태 파악까지 가능케 해주는 장점을 가진다. | |
물질 내의 우라늄 함량 결정 방법은? | 어떤 물질 내의 우라늄 함량은 중성자 조사(照射,irradiation)에 의해 235U의 핵분열 손상흔적(즉 피션트랙, fission track)을 고체상태 트랙 디텍터(solid state nuclear track detector)에 인위적으로 유도시켜 기록해냄으로써 결정할 수 있다. 이 연구에서는 대표적인 지질물질인 암석, 광물, 자연수에 대한 최적 피션트랙 검출기법을 제시하고 문제점을 정밀 진단하였다, |
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