Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany.
Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany; IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France(1).
Appl Radiat Isot. 2023 Apr;194:110666. doi: 10.1016/j.apradiso.2023.110666. Epub 2023 Jan 20.
Precise radon measurements are a requirement for various applications, ranging from radiation protection over environmental studies to material screening campaigns for rare-event searches. All of them ultimately depend on the availability of calibration sources with a known and stable radon emanation rate. A new approach to produce clean and dry radon sources by implantation of Ra ions into stainless steel has been investigated. In a proof of principle study, two stainless steel plates have been implanted in collaboration with the ISOLDE facility located at CERN. We present results from a complete characterization of the sources. Each sample provides a radon emanation rate of about 2 Bq, which has been measured using electrostatic radon monitors as well as miniaturized proportional counters. Additional measurements using HPGe and alpha spectrometry as well as measurements of the radon emanation rate at low temperatures were carried out.
精确的氡测量是各种应用的要求，从辐射防护到环境研究，再到稀有事件搜索的材料筛选活动。所有这些最终都依赖于具有已知和稳定氡发射率的校准源的可用性。一种通过将 Ra 离子注入不锈钢来产生清洁干燥的氡源的新方法已经过研究。在原理验证研究中，两块不锈钢板与位于 CERN 的 ISOLDE 设施合作进行了植入。我们展示了对源进行全面表征的结果。每个样品的氡发射率约为 2 Bq，这是使用静电氡监测器以及小型比例计数器测量得出的。还进行了使用 HPGe 和 alpha 光谱法的其他测量以及低温下氡发射率的测量。
