Ion Spectroscopy

亚稳、低能多电荷离子的平均寿命用俘获技术测量。离子从回旋加速器源获得，并根据离子储存时间测量衰变光子的强度。用共线激光-离子束光谱学的方法对禁止跃迁和电偶极子允许跃迁进行光谱测量。将使用同一元素的不同同位素研究超细淬火。这些数据将与最近使用多体摄动理论和多构型狄拉克-福克理论的理论计算进行比较。

The mean lifetimes of metastable, low energy multi-charged ions are measured using trapping techniques. The ions are obtained from a cyclotron source and the intensity of decay photons measured against ion storage times. Spectroscopic measurements of forbidden as well as electric dipole allowed transitions will be carried out using the method of collinear laser-ion beam spectroscopy. Hyperfine quenching will be studied using different isotopes of the same element. The data will be compared with recent theoretical calculations using many-body perturbations theory and multi-configuration Dirac-Fock theory.