Marouli M, Lutter G, Pommé S, Van Ammel R, Hult M, Pierre S, Dryák P, Carconi P, Fazio A, Bruchertseifer F, Morgenstern A
European Commission, Joint Research Centre, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium.
CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât. 602 PC111 CEA Saclay, F-91191 Gif-sur-Yvette, France.
Appl Radiat Isot. 2019 Feb;144:34-46. doi: 10.1016/j.apradiso.2018.08.023. Epub 2018 Aug 30.
The emission probabilities of γ rays produced in the Ac decay series were determined by high-resolution γ-ray spectrometry of sources with standardised activity. The sources were prepared quantitatively on glass discs by drop deposition of a solution with Ac in radioactive equilibrium with its daughter nuclides. Their activity was measured by a primary standardisation technique based on alpha-particle counting at a defined low solid angle. Four laboratories performed γ-ray spectrometry and derived absolute γ-ray intensities. Mean values were calculated and compared with literature data and the currently recommended evaluated data. New values on certain γ-ray emission probabilities are proposed.
通过对具有标准化活度的源进行高分辨率γ射线能谱分析，确定了锕衰变系列中产生的γ射线的发射概率。通过滴加含有与其子核素处于放射性平衡的锕的溶液，在玻璃盘上定量制备源。通过基于在定义的低立体角下进行α粒子计数的初级标准化技术测量它们的活度。四个实验室进行了γ射线能谱分析并得出了绝对γ射线强度。计算了平均值，并与文献数据和当前推荐的评估数据进行了比较。提出了某些γ射线发射概率的新值。
