Evaluated spectroscopic data and level schemes from radioactive decay and nuclear reaction studies are presented for ²⁴N, ²⁴O, ²⁴F, ²⁴Ne, ²⁴Na, ²⁴Mg, ²⁴Al, and ²⁴Si. This evaluation for A=24 supersedes the earlier one by R. B. Firestone (2007Fi14).

Highlights of this evaluation are the following:

In ²⁴O, the 7.4- and 7.65-MeV groups reported in ¹H(²⁴O,p′) (2012Ts03) and ⁹Be(²⁶F,nX) (2011Ho05), respectively, are considered as separate states in this evaluation, since the former one was observed to decay by only one neutron emission to ²³O, while the latter one by two sequential neutrons to ²²O. Based on assigned configurations, the 7.4- and 7.6-MeV groups are tentatively assigned negative and positive parities, respectively. Additional study would be useful to determine if these states are same or different.

In ²⁴Na, 2014Fi01 (n,γ) proposed J^π=(0,1,2)⁻ for 4048.8 keV level based on weaker population from the capture state (J^π=1⁺,2⁺) and mentioned to reexamine the J^π=0⁺ assignment, suggested in earlier evaluations (1990En08, 2007Fi02).

This evaluation includes the first observation of E0 transition, strength ρ²(E0)=0.380 70, for the 6432 keV transition from 0⁺ state at 6432 to 0⁺ g.s. in ²⁴Mg reported in 2020Do10. Authors proposed the first-excited 0⁺ state of ²⁴Mg to be superdeformed.

In ²⁴Al, the excited level energies deduced from (³He,t) measurements reported by different research groups vary significantly and it was not clear if some of those levels were same or different. Additional measurements are needed.

^针对24 N、²⁴ O、²⁴ F、²⁴ Ne、²⁴ Na、²⁴ Mg、²⁴ Al 和²⁴ Si，提供了来自放射性衰变和核反应研究的评估光谱数据和能级方案。A=24 的这一评估取代了 RB Firestone (2007Fi14) 的早期评估。

本次测评重点如下：

在^{24 O 中，分别在1} H( ²⁴ O,p') (2012Ts03) 和⁹ Be( ²⁶ F,nX) (2011Ho05)中报告的 7.4- 和 7.65-MeV 组在本次评估中被视为独立状态，因为观察到前者仅通过一个中子发射衰减到²³ O，而后一个通过两个连续的中子衰减到²² O。根据指定的配置，7.4-和 7.6-MeV 组暂时指定负宇称和正宇称，分别。额外的研究将有助于确定这些状态是相同还是不同。

在²⁴ Na 中，2014Fi01 (n, γ ) 提出 J ^π =(0,1,2) ⁻对于 4048.8 keV 水平基于来自捕获状态的较弱群体 (J ^π =1 ⁺ ,2 ⁺ ) 并提到重新检查 J ^π =0 ⁺ assignment，在早期评估中建议 (1990En08, 2007Fi02)。

该评估包括首次观察到 E0 跃迁，强度ρ ² (E0)=0.380 70 ，对于 2020Do10 中报告的²⁴ Mg中从 0 ⁺状态 6432 到 0 ⁺ gs的 6432 keV 跃迁。^{作者提出24} Mg 的第一激发态0 ⁺超变形。

在^{24 Al 中，由不同研究小组报告的 ( 3} He,t) 测量值推导出的激发能级能量差异很大，并且尚不清楚其中一些能级是否相同或不同。需要额外的测量。