Abstract Spectroscopic data for all nuclei with mass number A=212 have been evaluated and the corresponding level schemes from radioactive decay and reaction studies are presented. Highlights from this evaluation include the first observation of 212Hg by 2010Al24 and the first measurement of the ground state half-life by 2012Be28 and 2016Ca25. The first measurement of the β − decay of 212Tl populating excited states in 212Pb has been performed by 2014Mo02. Knowledge of excited levels and their half-lives in 212Po has been significantly extended in the transfer reaction studies of 2010As01,2010As03 and 2016Ko03,2017Ko38. A new (9−) isomer which α decays in 212At was observed by 2007Ku30. The level scheme of 212Rn was significantly extended through the (HI,xnγ) reaction studies of 2009Dr12 and 2008Dr01. New levels in 212Ra were identified in a transfer reaction experiment by 2018Pa04. Finally, the α decay of both the ground state and an isomer in 216U populating 212Th was reported for the first time by 2015Ma37 and 2015De22.

中文翻译：

---

A=212 的核数据表

摘要 已经评估了质量数为 A=212 的所有原子核的光谱数据，并提出了放射性衰变和反应研究的相应水平方案。该评估的亮点包括 2010Al24 首次观测到 212Hg，以及 2012Be28 和 2016Ca25 首次测量基态半衰期。212Pb 中 212Tl 填充激发态的 β - 衰变的首次测量已于 2014MoO2 进行。在 2010As01、2010As03 和 2016Ko03、2017Ko38 的转移反应研究中，对 212Po 中激发能级及其半衰期的了解得到了显着扩展。2007Ku30 观察到一种新的 (9−) 异构体，其 α 在 212At 中衰变。212Rn的水平方案通过2009Dr12和2008Dr01的(HI,xnγ)反应研究得到显着扩展。2018Pa04 在转移反应实验中发现了 212Ra 的新能级。最后，2015Ma37 和 2015De22 首次报道了填充 212Th 的 216U 中基态和异构体的 α 衰变。