【摘要】 <正> 纯β核素液闪测量技术应用广泛,实际工作中往往需要确定核素的测量效率;但除³H、¹⁴C等半衰期较长的核素外,多无系列猝灭标准源,给工作带来很多不便。本文根据国外有关方面研究,做了以³H标准源为基准、通过理论计算求出其它纯β核素在均相条件下的测量效率和猝灭校正曲线,进而求得放射性的活度。本方法使用简便、结果可靠,实用性强。更多还原

【Abstract】 In this paper, we present a method to determine the relationship of liquid-scintillation counting efficiency between 3H and any of the 34 pure beta-particle emitters based on thefigure of merit. The calculated quench curve for any interest radionuclide can be obtained from the experimental quench curve for 3H and the corresponding efficiency relationship table.更多还原