Sibczynski P, Kownacki J, Syntfeld-Kazuch A, Moszynski M, Kisielinski M, Czarnacki W, Kosinski K, Matusiak M, Klimasz M, Kowalczyk M, Abraham T, Mierzejewski J, Srebrny J
National Centre for Nuclear Research, 05-400 Otwock-Swierk, Poland.
Appl Radiat Isot. 2013 Dec;82:170-4. doi: 10.1016/j.apradiso.2013.08.005. Epub 2013 Aug 17.
Nuclear spectroscopy experiments were performed for 100g metallic uranium rod enriched to 93% (235)U, in order to establish and characterize the most prominent γ-rays in the natural decay series and photofission reaction. Single γ-ray spectra and γ-γ coincidences measurements were conducted before irradiation. The uranium sample was subsequently irradiated with 15 MeV bremsstrahlung photons. Relative intensities of γ-lines and several values of half-lives of the fission fragments decays were determined. The obtained information can be utilized in detection of smuggled nuclear materials and characterization of bulky nuclear waste packages.
对一根100克、铀 - 235丰度为93%的金属铀棒进行了核光谱实验，目的是确定和表征天然衰变系列及光致裂变反应中最显著的γ射线。在辐照前进行了单γ射线光谱和γ - γ符合测量。随后用15兆电子伏的轫致辐射光子对铀样品进行辐照。测定了γ射线的相对强度以及裂变碎片衰变的几个半衰期值。所获得的信息可用于检测走私核材料和表征大型核废料包。
