Wu Fang-Fei, Qi Xiao-Qiu, Chen Ai-Xi
College of Sciences, China Jiliang University, Hangzhou 310018, China.
Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China.
J Chem Phys. 2024 Oct 7;161(13). doi: 10.1063/5.0229060.
The electric dipole polarizabilities and the tune-out wavelengths for the n3S1 (n = 2, 3) states of Be2+ are determined through the application of the relativistic full-configuration-interaction approach. Our calculations directly integrate the mass shift operator into the Dirac-Coulomb-Breit Hamiltonian and further assess the quantum electrodynamics (QED) correction to the dynamic dipole polarizabilities using perturbation theory. The results reveal that the static electric dipole polarizability of the 23S1 and 33S1 states, as well as the 93 nm tune-out wavelength of the 23S1 state and the 238 nm tune-out wavelength of the 33S1 state, exhibits a high sensitivity to QED correction, which exceeds 80 ppm, providing a sensitive test for atomic structure theory.
通过应用相对论全组态相互作用方法，确定了Be2+的n3S1（n = 2, 3）态的电偶极极化率和调谐截止波长。我们的计算直接将质量位移算符纳入狄拉克 - 库仑 - 布赖特哈密顿量，并使用微扰理论进一步评估量子电动力学（QED）对动态偶极极化率的修正。结果表明，23S1和33S1态的静态电偶极极化率，以及23S1态的93 nm调谐截止波长和33S1态的238 nm调谐截止波长，对QED修正表现出高灵敏度，超过80 ppm，为原子结构理论提供了灵敏测试。
