韧致辐射法同时测量<sup>90</sup>Sr和<sup>90</sup>Y

韧致辐射法同时测量⁹⁰Sr和⁹⁰Y

摘要: 本工作提出了用韧致辐射法同时测量样品中⁹⁰Sr和⁹⁰Y的设想。采用二(2-乙基已基)磷酸萃取制备无⁹⁰Y的⁹⁰Sr溶液，应用阱型NaI(Tl)探测器进行跟踪测量，得到⁹⁰Sr与⁹⁰Y探测效率比k。根据k值，跟踪测量未知样品，可以得到样品中⁹⁰Sr和⁹⁰Y的量。因此可以直接用⁹⁰Sr -⁹⁰Y作为Y的示踪剂。

Abstract: An effective method is found that⁹⁰Sr and ⁹⁰Y can be measured by measuring the bremsstrahlung produced in a ⁹⁰Sr and ⁹⁰Y sample. According to the metrical principle, the detection efficiency ratio k of ⁹⁰Y to ⁹⁰Sr is obtained by measuring a ⁹⁰Sr sample from which ⁹⁰Y has been removed by extraction of ⁹⁰Y with di(2-ethylhexly) phosphoric acid (HDEHP). The results indicate that the simultaneous measurement of ⁹⁰Sr and ⁹⁰Y is feasible and ⁹⁰Sr-⁹⁰Y can be directly used as the tracer of Y.