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ÍÅÎÃÐÀÍÈ×ÅÍÍÎÃÎ ÈÑÏÎËÜÇÎÂÀÍÈß ÌÅÒÀËËΠ+----------------------------------------------------------------+ ¦ Ðàäèîíóêëèäû ¦ Ïåðèîä ¦Äîïóñòèìàÿ óäåëüíàÿ àêòèâíîñòü¦ ¦ ¦ ïîëóðàñïàäà ¦ îòäåëüíîãî i-ãî ðàäèîíóêëèäà ¦ ¦ ¦ ¦ ÄÊi, êÁê/êã ¦ +---------------+-----------------+------------------------------¦ ¦54 ¦ ¦ ¦ ¦ Mn ¦312 ñóò. ¦ 1,0 ¦ +---------------+-----------------+------------------------------¦ ¦60 ¦ ¦ ¦ ¦ Co ¦5,3 ãîä ¦ 0,3 ¦ +---------------+-----------------+------------------------------¦ ¦65 ¦ ¦ ¦ ¦ Zn ¦244 ñóò. ¦ 1,0 ¦ +---------------+-----------------+------------------------------¦ ¦94 ¦ 4 ¦ ¦ ¦ Nb ¦2,0 x 10 ãîä ¦ 0,4 ¦ +---------------+-----------------+------------------------------¦ ¦106 106m ¦ ¦ ¦ ¦ Ru + Rh ¦368 ñóò. ¦ 4,0 ¦ +---------------+-----------------+------------------------------¦ ¦110m ¦ ¦ ¦ ¦ Ag ¦250 ñóò. ¦ 0,3 ¦ +---------------+-----------------+------------------------------¦ ¦125 125m ¦ ¦ ¦ ¦ Sb + Te ¦2,8 ãîä ¦ 1,6 ¦ +---------------+-----------------+------------------------------¦ ¦134 ¦ ¦ ¦ ¦ Cs ¦2,1 ãîä ¦ 0,5 ¦ +---------------+-----------------+------------------------------¦ ¦137 137m ¦ ¦ ¦ ¦ Cs + Ba ¦30,2 ãîä ¦ 1,0 ¦ +---------------+-----------------+------------------------------¦ ¦152 ¦ ¦ ¦ ¦ Eu ¦13,3 ãîä ¦ 0,5 ¦ +---------------+-----------------+------------------------------¦ ¦154 ¦ ¦ ¦ ¦ Eu ¦8,8 ãîä ¦ 0,5 ¦ +---------------+-----------------+------------------------------¦ ¦90 90 ¦ ¦ ¦ ¦ Sr + Y ¦29,1 ãîä ¦ 10,0 ¦ +---------------+-----------------+------------------------------¦ ¦226 ¦ 3 ¦ ¦ ¦ Ra ¦11,6 x 10 ëåò ¦ 0,4 ¦ +---------------+-----------------+------------------------------¦ ¦232 ¦ 10 ¦ ¦ ¦ Th ¦1 x 10 ëåò ¦ 0,3 ¦ +----------------------------------------------------------------+ Ïðèìå÷àíèå. Ïðè íàëè÷èè â ìåòàëëå ñìåñè n ðàäèîíóêëèäîâ çíà÷åíèÿ óäåëüíûõ àêòèâíîñòåé îòäåëüíûõ ðàäèîíóêëèäîâ Qi äîëæíû óäîâëåòâîðÿòü ñîîòíîøåíèþ SUM Qi / ÄÊi < 1. Ïåðåéòè íà ñòð.1Ïåðåéòè íà ñòð.2Ïåðåéòè íà ñòð.3Ïåðåéòè íà ñòð.4Ïåðåéòè íà ñòð.5Ïåðåéòè íà ñòð.6Ïåðåéòè íà ñòð.7Ïåðåéòè íà ñòð.8Ïåðåéòè íà ñòð.9Ïåðåéòè íà ñòð.10Ïåðåéòè íà ñòð.11Ïåðåéòè íà ñòð.12Ïåðåéòè íà ñòð.13Ïåðåéòè íà ñòð.14Ïåðåéòè íà ñòð.15Ïåðåéòè íà ñòð.16ñòð.17 |