Nuclear Data Sheets for A=123

IF 2.8 1区 物理与天体物理 Q2 PHYSICS, NUCLEAR Nuclear Data Sheets Pub Date : 2021-05-01 DOI:10.1016/j.nds.2021.05.001
Jun Chen
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引用次数: 3

Abstract

Experimental nuclear structure and decay data are evaluated for all of 15 known nuclides of mass 123 (Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, I, Xe, Cs, Ba, La, Ce). For each nuclide, detailed evaluated spectroscopic information is presented in each reaction and decay, and the best values combining all available data are recommended for level properties, γ and β radiations, and other spectroscopic properties. No excited states have been identified in 123Ru, 123Rh and 123Pd. For 123Ag, the long-predicted 1/2 β-emitting isomer has been identified at 60-keV by 2019Ch24 recently, resolving unknown excitation energies in the level scheme that was previously available only from isomeric decays of two isomers (202 ns and 393 ns) with the position and spin-parity of the former remaining unknown. Significant discrepancies exist between data on high-spin sequences based on 11/2(−) isomer in 123Cd (2002Hw01 and 2016Re05), which needs to be resolved with further experimental investigation. In 123Cs, the 114-ns isomer as the πg9/2 bandhead proposed at 231.6+x by 2000Gi12 has been resolved by 2004Si26 and 2004Si27 to be the 328-keV level that is proposed by 2000Gi12 as a separate level. Excited states in 123La and 123Ce have only been studied via (HI, xnγ) reactions, with their base levels and thus excitation energies remaining unknown. The β decay schemes for daughter nuclide 123Cd, 123In and 123Sn and the ε decay schemes for 123Xe, 123Cs and 123Ba are considered incomplete due to large gaps between the highest observed excited levels and the Q-values. 123Sn, 123Sb, 123Te and 123I are the most extensively studied nuclides via various reactions and decays. This work supersedes earlier full evaluations of A=123 by 2004Oh11, 1993Oh12, 1980Ta02 and 1972Au10.

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A=123的核数据表
对所有15种已知质量为123的核素(Ru、Rh、Pd、Ag、Cd、In、Sn、Sb、Te、I、Xe、Cs、Ba、La、Ce)的实验核结构和衰变数据进行了评估。对于每种核素,在每次反应和衰变中都提供了详细的评估光谱信息,并结合所有可用数据推荐了能级特性,γ和β辐射以及其他光谱特性的最佳值。在123Ru、123Rh和123Pd中还没有发现激发态。对于123Ag,预测已久的发射1/2−β的同分异构体最近在2019Ch24的60 kev下被发现,解决了在能级方案中未知的激发能,这种激发能以前只能从两个异构体(202 ns和393 ns)的同分异构体衰变中获得,而前者的位置和自旋宇称仍然未知。在123Cd (2002Hw01和2016Re05)中基于11/2(−)异构体的高自旋序列数据之间存在显著差异,这需要进一步的实验研究来解决。在123Cs中,由2000Gi12在231.6+x提出的作为π / g9/2带头的114-ns同分异构体已被2004Si26和2004Si27解析为由2000Gi12提出的作为单独能级的328 kev能级。123La和123Ce的激发态仅通过(HI, xnγ)反应进行了研究,其基本能级和激发能仍然未知。子核素123Cd、123In和123Sn的β−衰变方案和123Xe、123Cs和123Ba的ε衰变方案被认为是不完整的,因为观测到的最高激发能级和q值之间存在很大的差距。123Sn, 123Sb, 123Te和123I是通过各种反应和衰变被广泛研究的核素。这项工作取代了早期的全面评估A=123由2004Oh11, 1993Oh12, 1980Ta02和1972Au10。
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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
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