A=64的核数据表

IF 2.8 1区 物理与天体物理 Q2 PHYSICS, NUCLEAR Nuclear Data Sheets Pub Date : 2021-12-01 DOI:10.1016/j.nds.2021.11.002
Balraj Singh , Jun Chen
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引用次数: 0

摘要

对13种已知质量为64的核素(Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Ga、Ge、As、Se)的实验数据进行了评价。对于每种核素,结合所有可用数据推荐最佳值用于光谱特性。在64Ti、64As和64Se中没有发现激发态。64V中只有一个激发态是同分异构体,64Cr中有三个。64Mn、64Fe和64Co的激发态数据仍然有限。64Ni、64Cu和64Zn是通过各种反应和衰变研究最多的核素,其次是64Ga和64Ge。在评估者看来,对于大于≈5 MeV激发的64Zn的能级方案的高自旋部分有几个不完整或不一致的方面,需要在使用大型γ-探测器阵列的进一步实验中加以解决。64Ti β−,64As ε和64Se ε的衰变模式是未知的,而64V β−和64Cr β−的信息很少。64Mn β−,64Fe β−,64Co β−和64Ge ε的衰变模式比较为人所知,但评价者仍然认为不完整。64Ga ε衰变的详细方案是已知的,但由于Q(ε)值为7171 keV,因此可能存在4713 keV以上的附加能级。64Cu的β -, β+和ε衰变模式是众所周知的,因为这种放射性核素在应用中非常重要,例如,作为核反应堆中中子通量测定的剂量计,以及作为正电子发射断层扫描(PET)的放射性药物。这项工作取代了2007年4月、1996年12月、1991年3月、1979年35月和1974年4月对A=64的全面评估。
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Nuclear Data Sheets for A=64

The evaluated experimental data are presented and evaluated for 13 known nuclides of mass 64 (Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se). For each nuclide, the best values combining all available data are recommended for spectroscopic properties. No excited states have been identified in 64Ti, 64As, and 64Se. Only one excited state in 64V as an isomer, and three in 64Cr have been identified. Data for excited states in 64Mn, 64Fe, and 64Co remain limited. 64Ni, 64Cu, and 64Zn are the most studied nuclides through various reactions and decays, followed by 64Ga and 64Ge. In the opinion of the evaluators, there are several incomplete or discrepant aspects of the high-spin portion of the level scheme for 64Zn above ≈5 MeV excitation which need to be resolved in further experiments using large γ-detector arrays. The decay schemes of 64Ti β, 64As ε and 64Se ε are unknown, while very little information is available for 64V β and 64Cr β. The decay schemes of 64Mn β, 64Fe β, 64Co β and 64Ge ε are somewhat better known, but still considered incomplete by evaluators. The decay scheme of 64Ga ε decay is known in detail, however there is the possibility of additional levels populated above 4713 keV, as the Q(ε) value is 7171 keV. The β, β+ and ε decay modes of 64Cu are well known, as this radionuclide is of great importance in applications, for example, as a dosimeter for neutron flux determination in nuclear reactors, and as a radiopharmaceutical for positron emission tomography (PET). This work supersedes earlier full evaluations of A=64 by 2007Si04, 1996Si12, 1991Si03, 1979Ha35 and 1974Au04.

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来源期刊
Nuclear Data Sheets
Nuclear Data Sheets 物理-物理:核物理
CiteScore
7.80
自引率
5.40%
发文量
22
审稿时长
>12 weeks
期刊介绍: The Nuclear Data Sheets are current and are published monthly. They are devoted to compilation and evaluations of experimental and theoretical results in Nuclear Physics. The journal is mostly produced from Evaluated Nuclear Structure Data File (ENSDF), a computer file maintained by the US National Nuclear Data Center
期刊最新文献
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