Energy Levels and Radiative Rates in Ge(XVIII)

Feng Hua, b, Yan Suna, Maofei Meia, Baiping Hana, Cuicui Sangc, Hao Liub aSchool of Mathematical and Physical Sciences, Xuzhou University of Technology, Xuzhou 221018, People's Republic of China bResearch Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, People's Republic of China cSchool of Sciences, Lanzhou University of Technology, Lanzhou 730050, People's Republic of China

Received: December 12, 2019; in final form March 4, 2020

Full Text PDF

Energy levels and E1, E2, M1, and M2 transitions rates are reported for the low-lying 41 levels of Ge(XVIII), belonging to the n=3 states (1s22s22p6)3s23p3, 3s3p4, and 3s23p23d. High-accuracy calculations have been performed as benchmarks for accurate treatments of relativity, electron correlations, and QED effects in multi-valence-electron systems. The calculated energy levels are in excellent agreement with the experimental results and the experimentally compiled energy values from the National Institute for Standards and Technology wherever available. The calculated values, including core-valence corrections, are found to be in a good agreement with other theoretical and experimental values. The present results are reported as benchmarks for future calculations and measurements.

DOI:10.12693/APhysPolA.137.1141 topics: energy levels, radiative rates, transition probabilities