论文标题
检测阳极中丢失的低洼原子态
Detection of missing low-lying atomic states in actinium
论文作者
论文摘要
通过两步共振激光离子化光谱镜检查观察到两个最低能量的阳性原子阳性水平，7s^27p 2p^o_1/2，7s^27p 2p 2p^o_3/2观察到，测量它们各自的能量为7477.36（4）（4）CM^-1和12 276.59（4）（4）（4）CM^276.59（4）。这些状态的寿命分别确定为668（11）NS和255（7）NS。此外，使用混合方法计算这些属性，该方法将配置相互作用和耦合群集方法结合在一起。该数据与理解肌动剂的复杂原子光谱以及为阳离子开发有效的激光冷却和电离方案的相关性，并可能应用用于高纯度医学介绍的生产以及对此原子的未来基本物理实验。
Two lowest-energy odd-parity atomic levels of actinium, 7s^27p 2P^o_1/2, 7s^27p 2P^o_3/2, were observed via two-step resonant laser-ionization spectroscopy and their respective energies were measured to be 7477.36(4) cm^-1 and 12 276.59(2) cm^-1. The lifetimes of these states were determined as 668(11) ns and 255(7) ns, respectively. In addition, these properties were calculated using a hybrid approach that combines configuration interaction and coupled-cluster methods in good agreement. The data are of relevance for understanding the complex atomic spectra of actinides and for developing efficient laser-cooling and ionization schemes for actinium, with possible applications for high-purity medicalisotope production and future fundamental physics experiments with this atom.
