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中国社会科学院考古研究所
收稿日期:1981-04-24,
纸质出版日期:1982-10
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李虎侯. 级联α-对法测定微量铀和钍[J]. 核技术, 1982,05(5):44-45.
Huhou Li. The determination of trace uranium and thorium by cascade pair counting[J]. Nuclear techniques, 1982, 05(5): 44-45.
陶器和瓷器中所含铀和钍的量在大多数情况下是很少的,针对这一特点,选用级联α-对法测定微量铀和钍。方法的优点是简便易行,用无限厚源,制样比较简单;探测元件采用ZnS屏,加上一套测定α-粒子的装置,要求它能够区分总的α-计数和级联α-计数。
The alpha emiter
216
Po has a half life of only 0.15 seconds comes immediately from
220
Rn. The number of cascade pairs was counted by a special equipment and the cascade pairs counting rate thus obtained was served as a measure of the thorium contents in the sample. The validity of results was comfirmed.
Teh-Lung Ku , Ann. Rev. Earth and Planetery Sciences , 4 , 347 ( 1976 ).
R. C. Turner et al . , Brit. J. Radiol . , 31 , 368 , 397 ( 1958 ).
D. J. Huntley and A. G. Wintle , The use of α-scitillation counting for measuring 250 Tb and 231 Pa contents of ocean sediments, Simon Fraser University (1979) , PACT , 2 , 1978 , p. 115 .
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