含~(32)P硫片灼烧后~(32)P的残留率

THE REMAINING PERCENTAGE OF ~(32)P AFTER BURNING OF SULPHUR TABLET CONTAINING ~(32)P

摘要: <正> 利用硫片的~(32)S(n,p)~(32)P核反应测量快中子通量是常用的简便方法。照射后的硫片通常要灼烧,以除去硫本身和副核反应产生的其他核素,~(32)P绝大部分留在残渣中。所以,用硫片测量快中子通量的准确性在很大程度上取决于灼烧后~(32)P残留率的准确性。Rein-hardt和Davis将硫片灼烧后残渣的~(32)P比放射性计数除以由外推到硫片重量为零时的~(32)P比放射性计数,得到灼烧后~(32)P残留率为92％。他们又用Nal闪烁计数计分别测量滴加了

Abstract: Three types of sulphur tablet containing ~(32)P are made artificially.The remai-ning percentage of ~(32)P after burning of 1st,2nd type and 3rd type sulphur tabletcontaining ~(32)P is 98.1±1.3％ and 97.2±2.8％,respectively.